my 2.5l setup: what am i missing? if anything?
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From: Santa Rosa, CA
Car Info: 2002 M3
cool ill be sure to let everyone know how it comes out but by the time i actually gather parts itll be about a year away since iam just moving out and have other obligations.
Since your running multiple APS parts, the new APS turbo inlet hose (metal pipe) might be a good idea. From what I've read, running over 400whp/400 tq usually collapes the stocker and many of the cheaper aftermarket silicone hoses emplode too.
Originally Posted by bigworm
cobb closed deck ti rodded shorblock with 8:1 cr 8k redline
p&p'd wrx heads w/ ti valves, valvesprings and retainers
jun 272 cams
aps header
aps sr55
aps 3" catless tbe
aps dr725 fmic w/ custom ic pipes for reverse mount tb
pe 800's
walbro fp
cobb lightened crank pulley
accessport
smc alcohol injection kit
p&p'd wrx heads w/ ti valves, valvesprings and retainers
jun 272 cams
aps header
aps sr55
aps 3" catless tbe
aps dr725 fmic w/ custom ic pipes for reverse mount tb
pe 800's
walbro fp
cobb lightened crank pulley
accessport
smc alcohol injection kit
- And Helix will probably have 272 cams as well. Helix 264 is less than 500 local, Helix valvetrain is half the price of JUN
- Ebay for the catback...
- Ditch the pulley, it's like extra money you don't need to spend. I mean maybe if you put out 395whp then ok, buy the pully.
- You may or may not need a built motor for 350whp on Gruppe-S (IE 400+WHP on a dynojet)
- You don't even need the valvetrain. I seriously doubt you need an 8k redline. If you install valvetrain into WRX heads it costs another few hundred bucks to cut valves etc. Cams drop right in.
- DON'T PNP imho. I am no tuner expert but the WRX heads and STI heads flow similar if I'm not mistaken. It's the WRX CAMS, not the head, that is holding it back. Just check out the work gruppe-S did on a 2.0l w/ TD05-20G and helix 264 cams: 336whp iirc on a 96 tune, which of course would be 370-380 on dynojets. It costs so much to port heads that if you are already going valvetrain/cams you might as well just buy bare JDM big port heads and sell your stock wrx heads afterwards.
The bottom line is, because you said you are "about one year away" this probably means you don't have a lot of money (hey I don't have a lot of money either). When you don't have a lot of money on one hand you don't want to cheap out and then pay the price for being cheap. But on the other hand it's in your best interests to cut costs wherever possible.
I've got the same goals as you and we'll see how I do in a few months after the motor's broken in and tuned. However I plan:
2.5L SB (1700 but I'm buying it new. easily 1300 used but low miledge)
Helix 264 cams (<500)
Helix 820cc (top feed) injectors (<500)
FP green or Helix RR500 (1500 for the green, G-S estimates ~1100 for the RR500?)
Perrin FMIC (1100, but you can really go cheaper. You just need to add an additional length of piping w/ coupling to accomodate a rotated mount if you went that route. I don't have access to fabrication/machine shop equipment anymore or else I'd use the $400 ebay FMIC I've got lying around.)
Crucial Racing catback or Borla Hush since I'm losing too much power w/ silencer in the catback and I can't tolerate a loud car)
Gruppe-S Jethot coated header (500, but note people have been porting stock headers/crosspipes with good results IE about as good as aftermarket. Crucial offers header porting service or you can DIY)
Perrin Big MAF (200)
If you don't drive your car that much just get a 96 or 100 octane tune. With these bigger turbos there is a BIG, BIG difference between 100 and cowpiss IE california 91. 100 octane is 4.70 ish /gallon, and during the summer it's not that much more expensive than 91! Besides you will get slightly better miledge from running leaner

and labor 1500-2000 of course
I'm not swimming in cash so I didn't get the most expensive parts (I am of the opinion of "if you can afford, go for quality since going for cheap usually ends up costing more later"). But I also did not cut costs in some areas. I could have gone ebay catback, fmic, headers/UP, but chose to go w/ some more expensive stuff. I could have wrapped my headers but chose to spend money ceramic coating. I've cut costs in some places, but also spent more in others.
I'll have Gruppe-S do the work, they are a quality shop that pays attention to quality and warranties their builds (provided you follow some obvious guidelines, unlike some other shop in the bay area.)
If you can get someone to hook you up with a Perrin rotated mount they can be had for much cheaper than advertised. In fact if you don't have an UP/DP it's cheap enough that you should just get it (it comes with DP/UP AND Big MAF).
Anyhow I'm not expert I've only got 300whp
but I hope to get up there soon, just wanted to share my opinions with a fellow I-cluber going on the similar path with the glorious bugeye...
Last edited by verc; Mar 15, 2006 at 08:36 PM.
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Don't forget a bigger MAF housing and intake. You'll be right around the saturation point with the stock housing at that power level. You also don't really need fuel rails at that power level.
I'm currently working on an STI with a Gruppe-S stage 1 short block and deadbolt td06-20G. Other than that the car just has PE850's, walbro, a giant ESX tmic, Crucial downpipe and catless mid-pipe, Helix catback, and Perrin big MAF intake. Its still running the stock turbo inlet for some reason, but it doesn't seem to be much of a restriction at all. The car had some hardware issues (poorly ported wastegate, leaky BOV, and a stock fuel pump because someone forgot to install the walbro) which just recently got sorted out. I finally had some time to put this thing on the dyno last night at DB and after spending a couple hours on it, I was really surprised by the results. I still need to smooth it out a bit, but it ended the night with 372whp and 393ft-lbs on pump gas! Note that a stock STI makes 215-220whp on this particular Mustang dyno. I was expecting around 340whp MAYBE 350 out of this setup, but it just kept taking more and more without a sign of knock anywhere. This car is also currently running the stock BPV which I'm sure is leaking a bit at the 1.5bar max boost. These power levels are amazing to me considering the great response (full boost by 3400rpm and torque peak at 4k RPM even with a leaky stock BPV). Next step is to swap out the BPV for either a Tial or Greddy unit, finish up the pump gas tune and see what she'll do on some real gas.
Just remember that there's no point in spending money for needless parts especially for your power goals.
Thanks
I'm currently working on an STI with a Gruppe-S stage 1 short block and deadbolt td06-20G. Other than that the car just has PE850's, walbro, a giant ESX tmic, Crucial downpipe and catless mid-pipe, Helix catback, and Perrin big MAF intake. Its still running the stock turbo inlet for some reason, but it doesn't seem to be much of a restriction at all. The car had some hardware issues (poorly ported wastegate, leaky BOV, and a stock fuel pump because someone forgot to install the walbro) which just recently got sorted out. I finally had some time to put this thing on the dyno last night at DB and after spending a couple hours on it, I was really surprised by the results. I still need to smooth it out a bit, but it ended the night with 372whp and 393ft-lbs on pump gas! Note that a stock STI makes 215-220whp on this particular Mustang dyno. I was expecting around 340whp MAYBE 350 out of this setup, but it just kept taking more and more without a sign of knock anywhere. This car is also currently running the stock BPV which I'm sure is leaking a bit at the 1.5bar max boost. These power levels are amazing to me considering the great response (full boost by 3400rpm and torque peak at 4k RPM even with a leaky stock BPV). Next step is to swap out the BPV for either a Tial or Greddy unit, finish up the pump gas tune and see what she'll do on some real gas.
Just remember that there's no point in spending money for needless parts especially for your power goals.
Thanks
Thread Starter
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Car Info: 2002 M3
good #s out of that i have decided to raise my power goals ... also, main reason for all the titainium parts is so that the car gets the revs up faster
so with the raised power goals and keeping in mind that the leos are out hating on our game im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned
so with the raised power goals and keeping in mind that the leos are out hating on our game im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned
Originally Posted by bigworm
good #s out of that i have decided to raise my power goals ... also, main reason for all the titainium parts is so that the car gets the revs up faster
so with the raised power goals and keeping in mind that the leos are out hating on our game im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned
so with the raised power goals and keeping in mind that the leos are out hating on our game im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned
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Car Info: 2002 M3
Originally Posted by MARKSTI
You r crazy.
...and along with the motor will be a 6spd with the gear ratios changed to 4.44 and a hub swap to the bigger 5x114 hubs with 18x9 kinesis wheels and 255/40/18's.
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Originally Posted by bigworm
good #s out of that i have decided to raise my power goals ... also, main reason for all the titainium parts is so that the car gets the revs up faster
so with the raised power goals and keeping in mind that the leos are out hating on our game im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned
so with the raised power goals and keeping in mind that the leos are out hating on our game im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tunediClub Silver Vendor
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Originally Posted by EQ Tuning
...at DB and after spending a couple hours on it, I was really surprised by the results.
I still need to smooth it out a bit, but it ended the night with 372whp and 393ft-lbs on pump gas! Note that a stock STI makes 215-220whp on this particular Mustang dyno.
Thanks
I still need to smooth it out a bit, but it ended the night with 372whp and 393ft-lbs on pump gas! Note that a stock STI makes 215-220whp on this particular Mustang dyno.
Thanks
Thread Starter
Registered User
iTrader: (1)
Joined: May 2005
Posts: 549
From: Santa Rosa, CA
Car Info: 2002 M3
Originally Posted by bigworm
good #s out of that, i have decided to raise my power goals ... also, main reason for all the titainium parts is so that the car gets the revs up faster
so with the raised power goals and KEEPING IN MIND THAT THE LEO'S ARE OUT THERE HATING ON OUR GAME ...im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned
so with the raised power goals and KEEPING IN MIND THAT THE LEO'S ARE OUT THERE HATING ON OUR GAME ...im gonna go with a cobb 2.65l and a fp red with an oil cooler mounted in the location of the stock tmic so that everything still looks somewhat factory
-still thinking out some of the other details..... stay tuned

