EVO Supercharger Owners' Thread
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Originally Posted by deputydog95
the car seems to making a little more power now, but it's kind of sporadic. very strange. still not feeling the SC surge of power from 4K up that it used to have. it is making slightly less boost. i ran it to redline several times in a row and only made it to 4.5. i used to hit well over 5 and sometimes it would briefly spike up to 5.6ish.
anyway, the SC is still a little noisy, so I decided to take a long hard look at the whole kit this afternoon. i noticed oil pooling around my SC oil feed line. not good. the car was running and it was dripping down the SC. that explains my recent oil consumption and possibly why the SC has been a little noisier. hope the SC hasn't been affected by the oil leak.
this just gets better and better
anyway, the SC is still a little noisy, so I decided to take a long hard look at the whole kit this afternoon. i noticed oil pooling around my SC oil feed line. not good. the car was running and it was dripping down the SC. that explains my recent oil consumption and possibly why the SC has been a little noisier. hope the SC hasn't been affected by the oil leak.
this just gets better and better
Not too many things to check. First check the tube connection betwen the blower and cooler. Do not simply accept looking closly at it but run your hands around each end making sure that the rubber connection is not folded under, allowing air to escape. Next, check the same thing on the tube between the cooler and the throttlebody. It is most likely one of these connections. Also check that the bypass valve connection are secure and tight.
If all is well, check again.
Very,very unlikely that there is any blockage in the cooler. If the throttlebody has been removed, check for proper install along with the tighten of the first intake tube the throttlebody is attached too.
IF the blower has the same pulley then the only cause of lower boost (short of a bad blower) is a leak. Although you could have a vacuum line disconnected, it would not cause you to lose 1 psi. Also, make sure that the bypass valve is connected to vacuum on the trottlebody and not some other connection that will hold vacuum. There should be not check valve on this line.
If belt was loose, it should make noise, but this would also cause lower boost.
As far as the oil leakage, be careful tightning the connection as it can break very easily which will require you to get a new valve.
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From: belmont, CA (bay area)
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wait a minute... when did it become noisy? i remember asking you if the SC is noisy and you said it was quiet, especially when comparing it to the TPC SC.
re: the oil. just tighten it up a bit to crush the copper crush washer a bit more.
actually i take back what is said earlier saying that this mod has been perfect... it has been almost perfect. i have had some oil "issues". some oil has accumulated in the intake pipe from the crankcase breather hose ( hope it's from the crank case breather, not from the SC itself
). some of this oil has been picked by the SC and thrown into the boost hose and accumulated on the intercooler vanes. it hasn't affected performance... i am still getting full boost... but it has been a bit messy. some of the oil leaked passed the hose clamps and dripped onto the cats. was a little smokey. looks like the new silicone boost hoses is either keeping the oil in or oil isn't being sucked up by the crank case breather. 
this mod is for the tinkerer, someone who can diy. with a TT still being out of my grasp this still is the best power mod for the 996NA.
re: the oil. just tighten it up a bit to crush the copper crush washer a bit more.
actually i take back what is said earlier saying that this mod has been perfect... it has been almost perfect. i have had some oil "issues". some oil has accumulated in the intake pipe from the crankcase breather hose ( hope it's from the crank case breather, not from the SC itself
). some of this oil has been picked by the SC and thrown into the boost hose and accumulated on the intercooler vanes. it hasn't affected performance... i am still getting full boost... but it has been a bit messy. some of the oil leaked passed the hose clamps and dripped onto the cats. was a little smokey. looks like the new silicone boost hoses is either keeping the oil in or oil isn't being sucked up by the crank case breather. this mod is for the tinkerer, someone who can diy. with a TT still being out of my grasp this still is the best power mod for the 996NA.
Originally Posted by deputydog95
the car seems to making a little more power now, but it's kind of sporadic. very strange. still not feeling the SC surge of power from 4K up that it used to have. it is making slightly less boost. i ran it to redline several times in a row and only made it to 4.5. i used to hit well over 5 and sometimes it would briefly spike up to 5.6ish.
anyway, the SC is still a little noisy, so I decided to take a long hard look at the whole kit this afternoon. i noticed oil pooling around my SC oil feed line. not good. the car was running and it was dripping down the SC. that explains my recent oil consumption and possibly why the SC has been a little noisier. hope the SC hasn't been affected by the oil leak.
this just gets better and better
anyway, the SC is still a little noisy, so I decided to take a long hard look at the whole kit this afternoon. i noticed oil pooling around my SC oil feed line. not good. the car was running and it was dripping down the SC. that explains my recent oil consumption and possibly why the SC has been a little noisier. hope the SC hasn't been affected by the oil leak.
this just gets better and better
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From: Minneapolis, Mn
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Originally Posted by 1999Porsche911
Did you ever take the sensor readings. Now, since you are not getting the boost you should, there has to be either a blockage or leak AFTER the blower. This assumes that your vacuum reading at idle is normal which would eliminate vacuum hose leaks.
Not too many things to check. First check the tube connection betwen the blower and cooler. Do not simply accept looking closly at it but run your hands around each end making sure that the rubber connection is not folded under, allowing air to escape. Next, check the same thing on the tube between the cooler and the throttlebody. It is most likely one of these connections. Also check that the bypass valve connection are secure and tight.
If all is well, check again.
Very,very unlikely that there is any blockage in the cooler. If the throttlebody has been removed, check for proper install along with the tighten of the first intake tube the throttlebody is attached too.
IF the blower has the same pulley then the only cause of lower boost (short of a bad blower) is a leak. Although you could have a vacuum line disconnected, it would not cause you to lose 1 psi. Also, make sure that the bypass valve is connected to vacuum on the trottlebody and not some other connection that will hold vacuum. There should be not check valve on this line.
If belt was loose, it should make noise, but this would also cause lower boost.
As far as the oil leakage, be careful tightning the connection as it can break very easily which will require you to get a new valve.
Not too many things to check. First check the tube connection betwen the blower and cooler. Do not simply accept looking closly at it but run your hands around each end making sure that the rubber connection is not folded under, allowing air to escape. Next, check the same thing on the tube between the cooler and the throttlebody. It is most likely one of these connections. Also check that the bypass valve connection are secure and tight.
If all is well, check again.
Very,very unlikely that there is any blockage in the cooler. If the throttlebody has been removed, check for proper install along with the tighten of the first intake tube the throttlebody is attached too.
IF the blower has the same pulley then the only cause of lower boost (short of a bad blower) is a leak. Although you could have a vacuum line disconnected, it would not cause you to lose 1 psi. Also, make sure that the bypass valve is connected to vacuum on the trottlebody and not some other connection that will hold vacuum. There should be not check valve on this line.
If belt was loose, it should make noise, but this would also cause lower boost.
As far as the oil leakage, be careful tightning the connection as it can break very easily which will require you to get a new valve.
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Joined: Jan 2004
Posts: 978
From: belmont, CA (bay area)
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DDog should also check the DV fitting... the clamp at the boost hose - DV junction and the vacuum hose that attaches to the DV. the bosch DV has known to go bad on the TT's, this can also be a point for a boost leak. i upgraded to the EVO billet DV, same ones they use for their TT upgrades.
Originally Posted by 1999Porsche911
Did you ever take the sensor readings. Now, since you are not getting the boost you should, there has to be either a blockage or leak AFTER the blower. This assumes that your vacuum reading at idle is normal which would eliminate vacuum hose leaks.
Not too many things to check. First check the tube connection betwen the blower and cooler. Do not simply accept looking closly at it but run your hands around each end making sure that the rubber connection is not folded under, allowing air to escape. Next, check the same thing on the tube between the cooler and the throttlebody. It is most likely one of these connections. Also check that the bypass valve connection are secure and tight.
If all is well, check again.
Very,very unlikely that there is any blockage in the cooler. If the throttlebody has been removed, check for proper install along with the tighten of the first intake tube the throttlebody is attached too.
IF the blower has the same pulley then the only cause of lower boost (short of a bad blower) is a leak. Although you could have a vacuum line disconnected, it would not cause you to lose 1 psi. Also, make sure that the bypass valve is connected to vacuum on the trottlebody and not some other connection that will hold vacuum. There should be not check valve on this line.
If belt was loose, it should make noise, but this would also cause lower boost.
As far as the oil leakage, be careful tightning the connection as it can break very easily which will require you to get a new valve.
Not too many things to check. First check the tube connection betwen the blower and cooler. Do not simply accept looking closly at it but run your hands around each end making sure that the rubber connection is not folded under, allowing air to escape. Next, check the same thing on the tube between the cooler and the throttlebody. It is most likely one of these connections. Also check that the bypass valve connection are secure and tight.
If all is well, check again.
Very,very unlikely that there is any blockage in the cooler. If the throttlebody has been removed, check for proper install along with the tighten of the first intake tube the throttlebody is attached too.
IF the blower has the same pulley then the only cause of lower boost (short of a bad blower) is a leak. Although you could have a vacuum line disconnected, it would not cause you to lose 1 psi. Also, make sure that the bypass valve is connected to vacuum on the trottlebody and not some other connection that will hold vacuum. There should be not check valve on this line.
If belt was loose, it should make noise, but this would also cause lower boost.
As far as the oil leakage, be careful tightning the connection as it can break very easily which will require you to get a new valve.
Last edited by karlooz; Apr 13, 2006 at 10:02 PM.
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thanks guys.
99: no, did not get those readings yet. forgot to bring my laptop home.
i think i'm going to try and get the car back to the porsche dealer. my installer left me a voice mail stating they would put the car on the porsche computer and run all the numbers.
it needs to go back for the oil leakage anyway. i hope the SC is not damaged. it isn't too noisy when the trunk is closed, but it sounds a little rattly when the trunk is open. it was very smooth sounding right after it was installed. we'll see what happens....
99: no, did not get those readings yet. forgot to bring my laptop home.
i think i'm going to try and get the car back to the porsche dealer. my installer left me a voice mail stating they would put the car on the porsche computer and run all the numbers.
it needs to go back for the oil leakage anyway. i hope the SC is not damaged. it isn't too noisy when the trunk is closed, but it sounds a little rattly when the trunk is open. it was very smooth sounding right after it was installed. we'll see what happens....
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From: Arizona
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DIY Crank Filter
Originally Posted by karlooz
i have had some oil "issues". some oil has accumulated in the intake pipe from the crankcase breather hose ( hope it's from the crank case breather, not from the SC itself ). some of this oil has been picked by the SC and thrown into the boost hose and accumulated on the intercooler vanes. it hasn't affected performance... i am still getting full boost... but it has been a bit messy. some of the oil leaked passed the hose clamps and dripped onto the cats. was a little smokey. looks like the new silicone boost hoses is either keeping the oil in or oil isn't being sucked up by the crank case breather.
this mod is for the tinkerer, someone who can diy. with a TT still being out of my grasp this still is the best power mod for the 996NA.
). some of this oil has been picked by the SC and thrown into the boost hose and accumulated on the intercooler vanes. it hasn't affected performance... i am still getting full boost... but it has been a bit messy. some of the oil leaked passed the hose clamps and dripped onto the cats. was a little smokey. looks like the new silicone boost hoses is either keeping the oil in or oil isn't being sucked up by the crank case breather. this mod is for the tinkerer, someone who can diy. with a TT still being out of my grasp this still is the best power mod for the 996NA.
http://www.webbspot.com/porsche/html/crank_vent.html
Last edited by Mother; Apr 14, 2006 at 12:28 AM.
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From: belmont, CA (bay area)
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Originally Posted by Mother
Karlooz if you are getting excess build up of crank oil in the intake I have installed a DIY in-line course filter that can be periodically cleaned it will keep your IC cleaner also. You can see instructions if you wish here.
http://www.webbspot.com/porsche/html/crank_vent.html
http://www.webbspot.com/porsche/html/crank_vent.html
THANKS A BUNCH!!! i was going to rig something up but this is perfect. on thing.... most of the pictures from that link are for a transmission DIY
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Ok try again
Originally Posted by karlooz
THANKS A BUNCH!!! i was going to rig something up but this is perfect. on thing.... most of the pictures from that link are for a transmission DIY
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From: belmont, CA (bay area)
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Originally Posted by Mother
Thanks for the heads up on the pictures, I do not know why this is happening but I will republish the pages, and let me know what the results are thanks.
sure thing. i'm on the search for a the bowl type breather filter but only found one. most of the google "hits" show breather filters (like the K&N) venting out into the atmosphere with no catch tank. could be messy. the search continues...
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Bowl type
Originally Posted by karlooz
sure thing. i'm on the search for a the bowl type breather filter but only found one. most of the google "hits" show breather filters (like the K&N) venting out into the atmosphere with no catch tank. could be messy. the search continues...
Last edited by Mother; Apr 14, 2006 at 12:30 PM.
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Originally Posted by Mother
I was going that way also but some of my concerns (if I can remember the company let you know) was that they had the bowl type and it could filter and any excess would drain back to the crank via gravity and sc drain line. The problem was that they where larger then some paint gun inline bowl type filters that offerd visual and a drain (that could be modified Note: pics) I had found and couldn't find a place I could mount it. They used a "pop up type" warning system when filter was getting clogged which was a finer filter but got most of the oil and was also expensive to replace. I'll say this much it makes for fun weekend project.
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Venting to Atmosphere
Originally Posted by karlooz
thx mother. ya i agree, it's quite big. i just might make my own catch bowl and just vent to the atmosphere rather than back into the intake. makes for even cooler intake temps.
Here's a link to another ongoing catch can thread.https://www.6speedonline.com/forums/...ad.php?t=46720
Last edited by Mother; Apr 15, 2006 at 04:08 PM.
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from my research, the crankcase ventilation is routed to the intake for emission reasons. this is to prevent blow-by reaching the atmosphere. routing it to the intake ensures that it will be burned off and that it'll reach the catalysts.
the crankcase vent hose is after the MAF so i don't think it will affect it much.
the crankcase vent hose is after the MAF so i don't think it will affect it much.
Originally Posted by Mother
Correct me if I am wrong here or just missing something, I think venting to atomosphere might be the wrong approach, as it is now, your engine runs as a closed loop taking measurements at the MAF on air flow and the crankcase vent goes back to the intake side to keep the tune properly. If vented to atmosphere I would think this may cause problems. When my engine was stock the crankvent hose was routed back to the throttle body. Here's a link to another ongoing catch can thread.
https://www.6speedonline.com/forums/...ad.php?t=46720
Here's a link to another ongoing catch can thread.https://www.6speedonline.com/forums/...ad.php?t=46720
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I am considering the installation of an Oil Catch Can. I have had an instance where I was driving the car so hard, the oil blow-by created a problem. Here is an example of one I am considering.
http://www.altaminiperformance.com/p.../CATCHCAN.html
Anyone of you done this?
BTW - I am installing new headers tomorrow.
http://www.altaminiperformance.com/p.../CATCHCAN.html
Anyone of you done this?
BTW - I am installing new headers tomorrow.
Last edited by Captain Tal; Apr 15, 2006 at 05:51 PM.
