Air Intake Install Impressions
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Joined: Sep 2015
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From: San Diego
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Great info can you tell us what connects to what ?
Do you know if the CCT computer will adapt to a change like this ?
May past Mercedes V12TT computer would adapt to changes so nice gains could be had with the right CAI and Exhaust mods
Added photos would be great !
Do you know if the CCT computer will adapt to a change like this ?
May past Mercedes V12TT computer would adapt to changes so nice gains could be had with the right CAI and Exhaust mods
Added photos would be great !
My last minute change was I used a larger filter, about twice the size as most intakes (more filter area = more cfm) and I wanted to make sure it would fit. I did make it fit, but it was probably a lot of effort for minimal gains, if any. I'm also working on ducting cold air into the filter area, but I haven't really done much with this yet other than measure and brain storm.
Im going to give this a quick write up to get everyone that is interested in doing this started, I can follow up with more clarification if anyone needs it. I take no liability for any damage or harm you cause by following the path that works for me, everyone's experience may vary. I'm away from the car until the weekend so pics will have to wait, but I will add them later.
Parts (I have linked to what I purchased, I am not affiliated with or receive any endorsement from any of these manufacturers or companies, this is simply what I used in my project)::::
-2 quantity 90 degree silicone reducer elbows ( Amazon.com: Upgr8 Universal 4-Ply High Performance 90 Degree Elbow Reducer Coupler Silicone Hose (3.0"(76MM) to 4.0"(102MM), Black): Automotive )
-2 quantity 90 degree 4" aluminum mandrel bends ( Amazon.com: Spectre Performance 9799 4" 90 Degree Mandrel Intake Tube: Automotive )
-2 quantity air filters (http://smile.amazon.com/gp/product/B...ilpage_o09_s00 ) ****NOTE ABOUT THIS FILTER; this is the one I used. This larger filter does not fit easily. I had to cut the aluminum bend short to make this fit, and it still barely fit; It will make the project much simpler to use a filter size similar to the other intakes on the market especially since Im not sure that the larger/higher cfm filter even makes a difference. The bottleneck is further down in the intake system after the MAF.. http://smile.amazon.com/Spectre-Perf...let+air+filter I did a quick search and found this one that will *probably* fit much easier, but I can't guarantee it since I did not use it. This second filter is 6.7" length compared to 11.4" for the one I used; When I was testing my setup before using the larger filters, I just used a pair of mismatched random 4" inlet air filters I had in my garage left over from other cars)
-You will need 4 hose clamps (I used T-bolt clamps because that's what I had in my garage)
-You may elect to install a breather filter on the line going to the air suspension. I ziptied it up and out of the way and have had no negative effects.
-You may want to fabricate a heat shield; I did not. I worked on a design to add a carbon heat shield to mine and measured temperatures at the air filter with and without a heat shield under various driving conditions, and there wasn't enough difference (less than 1 degree at the filter) to make it worthwhile for me. I think the best difference in reducing intake temperature will be when I finish my cold air ducting.
Tools needed:
I need to check on this and get back with you guys, I will update it once I look it over. It wasn't anything out of the ordinary and you will probably already have it in your garage if you have been wrenching on your Cayenne before.
Installation:
***Im going to assume that if you are piecing together your own intake, you are somewhat mechanically inclined, so I may leave out some steps that are obvious since I'm not walking this through bolt by bolt, again anything you do is at your own risk and I'm going to touch on the overall procedure and what I remember the trouble points to be***
First thing you want to do is remove all of the factory stuff (obviously).
Start with the airbox and work towards the turbo; I don't remember the airbox being too difficult, but removing the headlights make it much easier to do. The passenger side airbox has the connection for the air suspension, its a kind of tricky connection. There is some wrestling required to get the airbox out of the fender. If you need to be walked through bolt by bolt on removing this, follow this guide http://quvpr.powmx.servertrust.com/v...ow_Install.pdf through step 7.
After this is complete, you are going to need to remove the MAF and it's housing piece from the turbo inlet pipe (there is a small worm clamp just below the MAF connection). I found it very easy to damage this plastic pipe below the MAF, I think its brittle from the heat over the time because on one side when I pulled the MAF out the flexible section of the inlet pipe came off with it and I had to source another turbo inlet pipe. Proceed with caution.
Once the MAF is out, install the small end of the silicone reducer goes to the MAF section, then put the MAF and reducer back to the factory turbo inlets. Next you have to get that 4" aluminum bend into the 4" side of the silicone coupler. Angle the pieces to get it positioned correctly so the stock plastic cover fits back on it, then add the filter on the end.
I don't have the step by step pictures or anything like that, and like I said I'm away from the car until the weekend so pictures will have to wait until after I'm back to get specifics.
Im going to give this a quick write up to get everyone that is interested in doing this started, I can follow up with more clarification if anyone needs it. I take no liability for any damage or harm you cause by following the path that works for me, everyone's experience may vary. I'm away from the car until the weekend so pics will have to wait, but I will add them later.
Parts (I have linked to what I purchased, I am not affiliated with or receive any endorsement from any of these manufacturers or companies, this is simply what I used in my project)::::
-2 quantity 90 degree silicone reducer elbows ( Amazon.com: Upgr8 Universal 4-Ply High Performance 90 Degree Elbow Reducer Coupler Silicone Hose (3.0"(76MM) to 4.0"(102MM), Black): Automotive )
-2 quantity 90 degree 4" aluminum mandrel bends ( Amazon.com: Spectre Performance 9799 4" 90 Degree Mandrel Intake Tube: Automotive )
-2 quantity air filters (http://smile.amazon.com/gp/product/B...ilpage_o09_s00 ) ****NOTE ABOUT THIS FILTER; this is the one I used. This larger filter does not fit easily. I had to cut the aluminum bend short to make this fit, and it still barely fit; It will make the project much simpler to use a filter size similar to the other intakes on the market especially since Im not sure that the larger/higher cfm filter even makes a difference. The bottleneck is further down in the intake system after the MAF.. http://smile.amazon.com/Spectre-Perf...let+air+filter I did a quick search and found this one that will *probably* fit much easier, but I can't guarantee it since I did not use it. This second filter is 6.7" length compared to 11.4" for the one I used; When I was testing my setup before using the larger filters, I just used a pair of mismatched random 4" inlet air filters I had in my garage left over from other cars)
-You will need 4 hose clamps (I used T-bolt clamps because that's what I had in my garage)
-You may elect to install a breather filter on the line going to the air suspension. I ziptied it up and out of the way and have had no negative effects.
-You may want to fabricate a heat shield; I did not. I worked on a design to add a carbon heat shield to mine and measured temperatures at the air filter with and without a heat shield under various driving conditions, and there wasn't enough difference (less than 1 degree at the filter) to make it worthwhile for me. I think the best difference in reducing intake temperature will be when I finish my cold air ducting.
Tools needed:
I need to check on this and get back with you guys, I will update it once I look it over. It wasn't anything out of the ordinary and you will probably already have it in your garage if you have been wrenching on your Cayenne before.
Installation:
***Im going to assume that if you are piecing together your own intake, you are somewhat mechanically inclined, so I may leave out some steps that are obvious since I'm not walking this through bolt by bolt, again anything you do is at your own risk and I'm going to touch on the overall procedure and what I remember the trouble points to be***
First thing you want to do is remove all of the factory stuff (obviously).
Start with the airbox and work towards the turbo; I don't remember the airbox being too difficult, but removing the headlights make it much easier to do. The passenger side airbox has the connection for the air suspension, its a kind of tricky connection. There is some wrestling required to get the airbox out of the fender. If you need to be walked through bolt by bolt on removing this, follow this guide http://quvpr.powmx.servertrust.com/v...ow_Install.pdf through step 7.
After this is complete, you are going to need to remove the MAF and it's housing piece from the turbo inlet pipe (there is a small worm clamp just below the MAF connection). I found it very easy to damage this plastic pipe below the MAF, I think its brittle from the heat over the time because on one side when I pulled the MAF out the flexible section of the inlet pipe came off with it and I had to source another turbo inlet pipe. Proceed with caution.
Once the MAF is out, install the small end of the silicone reducer goes to the MAF section, then put the MAF and reducer back to the factory turbo inlets. Next you have to get that 4" aluminum bend into the 4" side of the silicone coupler. Angle the pieces to get it positioned correctly so the stock plastic cover fits back on it, then add the filter on the end.
I don't have the step by step pictures or anything like that, and like I said I'm away from the car until the weekend so pictures will have to wait until after I'm back to get specifics.
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Joined: Aug 2014
Posts: 660
From: Bellevue, WA
Rep Power: 82
Im not sure if the computer adapts. Im sure a tune would help make it ideal. I noticed a gain in response/spool, midrange power feels a lot stronger, and the sound changed drastically. I noticed on the factory gauge the boost goes a tick higher in the midrange than it used to. Passengers always comment that it is the nicest sounding/coolest sounding SUV. There is a lot of induction and turbo sounds, the stock airbox muffles everything quite a bit.
I'll get photos this weekend and post them probably Monday. Again, if there are any specific photo requests from anyone please let me know so I don't have to take my car apart twice
***For anyone trying this install, here is another trick I had to do that I forgot... The silicone coupler is a very tight fit; I placed it in boiling water to make it more flexible, then removed it from the water and slipped it over the MAF and the alumimum bend while it was still hot and more bendy.
***Additionally, for anyone that is tackling this and may need additional help or run into a snag, send me a message and I will give you my cell number in case there are any further questions so you aren't stuck with your car being apart and waiting for me to come to the forum to reply.
Chris.
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Joined: Sep 2015
Posts: 30
From: San Diego
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Chris thx for the reply, I will PM you fro your cell number.
Are you able to put back all of the plastic covers so it still looks stock for the most part ?
Looking forward to more photos thx
Are you able to put back all of the plastic covers so it still looks stock for the most part ?
Looking forward to more photos thx
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Registered User
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From: Bellevue, WA
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PM replied 
Yes, plastic covers still fit, the only thing you can see is the silicone couplers. Mine are red so it stands out a bit but I think if you used the black couplers it could pass for stock unless there is another Cayenne to compare to.
Yes, plastic covers still fit, the only thing you can see is the silicone couplers. Mine are red so it stands out a bit but I think if you used the black couplers it could pass for stock unless there is another Cayenne to compare to.
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Joined: Sep 2015
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From: San Diego
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I finally got around to completing piecing together and installing my intake modification for my 05 Turbo.. Just curious if anyone else has similar experience.
1) Massive induction noise increase at part throttle/low rpm. Lot of spooling sound, I can hear it over the radio at low speeds. Its MUCH louder than I thought it would be. I think it sounds quite nice to be honest
2) Similarly loud increase in noise from the diverter valves. It sounds similar to past cars Ive owned with vent to atmosphere blow off valves. Its audible from outside of the car as well. Definitely did not expect to have these sounds coming from the Cayenne!
1) Massive induction noise increase at part throttle/low rpm. Lot of spooling sound, I can hear it over the radio at low speeds. Its MUCH louder than I thought it would be. I think it sounds quite nice to be honest
2) Similarly loud increase in noise from the diverter valves. It sounds similar to past cars Ive owned with vent to atmosphere blow off valves. Its audible from outside of the car as well. Definitely did not expect to have these sounds coming from the Cayenne!
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Also it looks like a Y Pipe like the below would be good to add ?
http://www.porscheshop.co.uk/acatalo...induction.html
http://www.porscheshop.co.uk/acatalo...induction.html
Last edited by KarlC; Dec 3, 2015 at 01:15 PM.
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Registered User
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Thats an interesting Y-pipe tube... I'm not sure what gains that piece will have if its retaining the stock dimensions; I've been keen to fabricate a new larger y-pipe when I replace my intercoolers (still unsure when/how I'll get about designing an intercooler kit, or if I'll be using sidemounts or a front mount) since I'll be making all custom intercooler pipes anyway. I have a lot of things I'd like to do on the induction side such as larger diameter pipes from below the MAF to the turbo inlet, full custom intercooler and piping, fitting a larger throttle body, etc.. Just not much free time to pursue it
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Joined: May 2015
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From: Woodstock, GA // Pittsburgh, PA
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SeattleTurbo,
Thanks for the added information - I'm ordering what I'll need tonight!
If you like, I can do a step by step picture procedure though its pretty straight forward. Primary information I needed was what size silicone elbows (you stated 3" MAF to 4", for your case, but basically 3" in and out is the magic number) and get the associated 90 degree mendral bent aluminum tube (in your case 4") and applicable filter.
If I do a write up and pictures, I will add to your thread - gives you the credit!
Will keep you posted.
Keoni.
Thanks for the added information - I'm ordering what I'll need tonight!
If you like, I can do a step by step picture procedure though its pretty straight forward. Primary information I needed was what size silicone elbows (you stated 3" MAF to 4", for your case, but basically 3" in and out is the magic number) and get the associated 90 degree mendral bent aluminum tube (in your case 4") and applicable filter.
If I do a write up and pictures, I will add to your thread - gives you the credit!
Will keep you posted.
Keoni.
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Joined: Nov 2015
Posts: 5
From: UK
Rep Power: 0
SeattleTurbo,
Thanks for the added information - I'm ordering what I'll need tonight!
If you like, I can do a step by step picture procedure though its pretty straight forward. Primary information I needed was what size silicone elbows (you stated 3" MAF to 4", for your case, but basically 3" in and out is the magic number) and get the associated 90 degree mendral bent aluminum tube (in your case 4") and applicable filter.
If I do a write up and pictures, I will add to your thread - gives you the credit!
Will keep you posted.
Keoni.
Thanks for the added information - I'm ordering what I'll need tonight!
If you like, I can do a step by step picture procedure though its pretty straight forward. Primary information I needed was what size silicone elbows (you stated 3" MAF to 4", for your case, but basically 3" in and out is the magic number) and get the associated 90 degree mendral bent aluminum tube (in your case 4") and applicable filter.
If I do a write up and pictures, I will add to your thread - gives you the credit!
Will keep you posted.
Keoni.
SeattleTurbo,
Thanks for the added information - I'm ordering what I'll need tonight!
If you like, I can do a step by step picture procedure though its pretty straight forward. Primary information I needed was what size silicone elbows (you stated 3" MAF to 4", for your case, but basically 3" in and out is the magic number) and get the associated 90 degree mendral bent aluminum tube (in your case 4") and applicable filter.
If I do a write up and pictures, I will add to your thread - gives you the credit!
Will keep you posted.
Keoni.
Thanks for the added information - I'm ordering what I'll need tonight!
If you like, I can do a step by step picture procedure though its pretty straight forward. Primary information I needed was what size silicone elbows (you stated 3" MAF to 4", for your case, but basically 3" in and out is the magic number) and get the associated 90 degree mendral bent aluminum tube (in your case 4") and applicable filter.
If I do a write up and pictures, I will add to your thread - gives you the credit!
Will keep you posted.
Keoni.
Registered User
Joined: May 2015
Posts: 75
From: Woodstock, GA // Pittsburgh, PA
Rep Power: 15
All finished!
Order of difficulty:
1. removing the damn clip for MAF sensor
2. removing MAF housing from lower intake pipe, minding that it can/may be brittle
3. removing OEM filter housing from wheel well.
All in all, took me 2 hours from start to finish. Haven't driven it yet though.
Thanks again.
Order of difficulty:
1. removing the damn clip for MAF sensor
2. removing MAF housing from lower intake pipe, minding that it can/may be brittle
3. removing OEM filter housing from wheel well.
All in all, took me 2 hours from start to finish. Haven't driven it yet though.
Thanks again.
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Registered User
Joined: Aug 2014
Posts: 660
From: Bellevue, WA
Rep Power: 82
Glad you were able to get it done! Its not difficult at all. Hope you enjoy it, and enjoy the money you saved If you want to do a more detailed write up, feel free. I haven't had time to get further pics on mine since I've returned home.
As far as the difference between 3" and 4", who knows really if its anything. I had 4" filters from another car around and realized I could fit 4" pretty easily in there when I looked at it. A 4" pipe flows more than 3", so I stuck with it. The 3" all the way probably works just as well as 4" considering the bottleneck will be the MAF and the piping below it.
If you want to do a more detailed write up, feel free. I haven't had time to get further pics on mine since I've returned home.As far as the difference between 3" and 4", who knows really if its anything. I had 4" filters from another car around and realized I could fit 4" pretty easily in there when I looked at it. A 4" pipe flows more than 3", so I stuck with it. The 3" all the way probably works just as well as 4" considering the bottleneck will be the MAF and the piping below it.
Registered User
Joined: May 2015
Posts: 75
From: Woodstock, GA // Pittsburgh, PA
Rep Power: 15
I will probably make something like the blue silicone Y adapter, basic measurement shows 3" in to dual 2.5" in.
Maybe winter project after I get my Volvo S60R Clutch repaired as I'm daily driving my CTT now because of that.
Maybe winter project after I get my Volvo S60R Clutch repaired as I'm daily driving my CTT now because of that.
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Joined: Jul 2014
Posts: 53
From: Canada
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Seattle,
Did you end up changing the diverter valves? I did a quick search in your posts and saw you mentioned them, but not that you changed them. I've been wanting to hear some sound clips as mine has quite the "whoosh" pre-spool and after letting off throttle during boost it makes an interesting sound, not a honking though (I changed my diverter valves to some aftermarket ones)
Did you end up changing the diverter valves? I did a quick search in your posts and saw you mentioned them, but not that you changed them. I've been wanting to hear some sound clips as mine has quite the "whoosh" pre-spool and after letting off throttle during boost it makes an interesting sound, not a honking though (I changed my diverter valves to some aftermarket ones)
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