First off this will be a thread that will take a month or so to finish just giving a sneak peek at the beginning and where I'm going.

I would also like to thank Renaissance.Man for inspiration and part numbers, Sjt0017 for hooking me up with some of the parts, and ric at sun coast for going above and beyond sending me explosion pics calling Germany and even recommending some other companies for custom hoses that would result in me buying from companies other then them to make this happen.

So here it is....... I already have secondary cat bypass with custom X pipe and magna-flow mufflers, I am now adding evoms intakes, apr R1 diverter valves, custom intake plenum and upper charge pipes ( inspired by Renaissance.Man), meth injection, tune, and retrofitting 957 intercoolers

I can not figure out how to make the pic come up. I'm not a computer guy but here are links (if someone wants to PM me and walk me through it I'll change them.

The evoms, and dv are pretty self explanatory


Here are some pics of the beginning of the custom intake plenum

First I bought a mandrel bent 2.75 SS pipe


Then I cut it down the middle to make two 90s


Then a cut across the top


Then a 90 degree turn and mate up


Then I took a 3" round to oval pipe to mate up to those two pipes


I still had to do some grinding and cutting to shorten the pipes to get the exact lengths and angles I wanted but wasn't to bad. I should be getting it welded in the next few days (would do it myself but not to confident in my welding with no leaks and I want pretty welds) will post more pics of it after it's welded and of the upper charge pipes when I get to that point in the build.

Now comes retro fitting 957 intercoolers to a 955, you could just go with 955 e81 or 955 S intercoolers and it would be direct bolt up with no problems(you would have to buy 955S pressure hose pressure pipe and clamps) But expect to spend around 3k. I decided to go with 957 because they are all the better intercoolers regular turbo or S models and can be found cheap used (800 for the pair is what I consider cheap). The problem that you will run into is the bottom inlet to the intercooler is different on 955 turbos, 955 turbo S, and 957. Also you can't just switch to 957 pipes because they will not mate up to 955 turbos. Now 955S and 957 have the same routing design on the passenger side(just different turbo and intercooler fittings). So I plan on using 957 pressure pipes to mate up to the intercooler and a 955S pressure hose to mate up to the turbo(I believe the 955S pressure hose should mate up to the 957 pressure pipe because it just slides over and gets clamped). Now the driver side will be a little tricky because of all the same problems on the pass side and because the 955 and 957 put the driver side DV in a different place. I believe I can do the same as the passenger side(955S pressure hose and 957 pressure pipe) but then there will be a hole in the pressure pipe because that is where the 957 puts the DV. My plan is to just cap that hole and stick with the stock DV position. I do not have any pics of this and do not want to post part numbers yet because this is all just theory and only works on paper. Once I get all of the hoses from Germany and confirm it will work I will post pics and part numbers.

That is everything I have for now but will be updating the tread as I make progress and hope to get on a dyno when all is done.

 

Subscribed! Looking good!

 

Cut the Y pipe down to size today welded it up and ground it down on the inside

Here's a pic of it sitting in the engine bay


And one of the inside of the two coming together


And one looking into one of the sides to sho the bend the air will flow


Still have to add the breather on the bottom and bracket for the sensor on the top, then clean up the welds and polish the inside and outside.

That's it for now

 

I helped you out and changed the links for you, so they show up in your thread. Feel free to click edit to see the changes I made.

 

Wow.. this looks similar! Hahaha... Good job with the mig! A flapdisk will do wonders to clean up those welds. Thanks for the shout out and looking forward to the progress.

/subscribed

 

Just in case anybody needs one and does not want to buy the IPD or fab one.

Top of page.
http://www.porscheshop.co.uk/acatalo...induction.html

 

I would have considered one of those if They made it bigger then the oem 2.25" only reason I did the fab was to make them 2.75"

 

Aren't you just going to use silicone reducers to connect to the factory pipes? Technically speaking the transition from the stock pipe to the larger merge pipes and then back to the roughly 3" throttle body would create turbulence and reduce velocity.

Hats off to you for tackling that! I learned something when you showed how to make the cuts. I was thinking about all the same things because I'm designing a FMIC system for my CTT build and one of the other headaches for me was attaching pipe to the throttle body. With the boost levels I will be running I'm concerned about a silicone coupler popping off. There isn't a roll bead on the throttle body for retention. I was thinking about one of these:

http://www.verociousmotorsports.com/...-Assembly.html

But I'm not sure that I want to weld to the throttle body. I think it would require removal of the electronic components and I'm not sure how all that would work as well as getting the seals too hot.

How are you going to attach yours?

 

Im going to be making 2.75 in pipes down to the intercoolers also

I'll just just a coupler at the TB

 

Nice find, but the length would suggest that it only replaces the plenum and boost couple hoses. If the chargepipes stay the same, then it just pushes the restriction farther upstream.

Also, the spot for the boost pressure sensor looks different; just a tube in comparison to the flat plate that I had to weld on. Maybe it is just a stock image placeholder?

I was concerned about this too and was able to test my connections to about 20 psi without any issue with good t-bolts clamps.

These style clamps are great, but require an aluminum plenum to weld on the adapters.

This is the way to go. I am sure you will love it.

 

Finally got all the hoses from Germany for the second time and it is official, you can put 957 intercoolers on a 955. Pics, part numbers, and details to follow this weekend

 

Well as I promised pics and details of my 957 intercoolers retrofit to my 955. I don't have the part numbers on me but will get them up

So on the passenger side I had to buy 955S hose that goes to the 955 turbo and a 957 plastic elbow that goes to the 957 intercooler.

Pic of old and new On pass side(same shape different design)


Pic of the new setup in car


Pic of old and new drivers side (notice how the new 957 elbow has a vent hole for the DV And the old doesn't, we will address that further down)(also if your doing DV this is a great time easy access when this pipe is out)


Now what to do about that dv vent hole. Believe it or not I went to the hardware store and found a chair leg cover and it was perfect.


One problem I ran into is the shroud retainers are slightly in a different location on the 957 intercoolers. All I did was get a piece of steel and tack it in to extend the retainer and now it is solid


And lastly for this installment pics of the side of old and new intercoolers



Like i said I will get up all needed part numbers. and will still be posting more pics of my of my meth install, custom upper charge pipes, and then dyno results.

 

Y pipe is almost done just have to polish and clear coat it. Here's some pics of the sensor bracket vent channel and the inside polished the best I can get it

 

didn't think about 957 ttS Y-pipe, throttle and intake plenum?
all that stuff didn't gain you any bhp itself, you need to chip-tune... to get best. preferrable 955ttS mapping...

 

Skigod, really impressive! Can't wait to hear your impressions. Did you us 304SS pipe or mild steel since you are talking about clearcoating it? I just left my SS polished.

Also, you might want to consider getting your TB ported.


The larger 957 CTTS throttle body will not fit onto a 955 since you have to change the intake manifold. DFI vs non-DFI; the design of the intake manifolds are completely different on the 4.5 vs the 4.8. Also, the 957 CTTS ypipe and chargepipe have the same diameter inlet sizing (not referring to the TB size) as the 957 CTT.

All considering, I think he chose the best path given the options.

I disagree here with or without a tune, Skigod will see an power increase in his power band on the top end.