Factory 2.5L Turbo Powertrain | Forum profile

It ended up being the cobb flat foot shift setting. I reset the ecu almost two weeks ago and didn't know it even had ffs in the map. It reset to 4,500rpm. So everytime I would go to shift when wot it would go back to 4,500rpm. I can't believe this one got past me lol oh well its better now.

Quote: HKS DP (non bellmouth), exhaust, HKS bov well...those are your first mistakes

There was a header shootout a while back that showed a 10whp gain from ported stockers with a new crosspipe (not even close to 3", nobody makes a 3" crosspipe, I doubt it's even 2"), and a 20whp gain from both an EL and UEL tubular header. This was untuned on stage 2 power levels.

The stock injectors are more than enough for the stock turbo, regardless of the boost, unless you go to E85. You don't need injectors now unless you plan to upgrade teh turbo later.

Compression check for sure. Cyl. 4 misfires were the first sign I got when I cracked a ring.

Both the K&N and the Perrin drop in filters suck nuts. They are expensive as hell, filter about as well as removing your paper filter and installing a piece of screen door in there, will add 0HP, and will take 5 years to provide a cost benefit, AKA 2 years after most people sell their car. So the reasons to get one are: you scored a free one or you are a lunatic. Had you read the Intake FAQ that is stickied at the top of this and 4...

what about a 20g with 8cm hotside and an ewg setup? the real question is who makes a nice 20g? i was thinking Blouch but now i am read about bad fitment issues.

Yeah, after i fix one problem then another one occurs. Right now, my check engine light keeps coming on after i hit full boost and im sure once i fix that ill have another problem. What problems are you having with your 08 sti? Does anybody have a diagram of how to have a manual boost controller installed? Should i use the stock T and a restrictor pill still? I think that might be my problem!

Plugs weren't all that bad at all. Either way its a total loss I'm sure. And without the money to fix it shes gonna be sitting for quite awhile. * Registered users of the site do not see these ads.

^ yeah you're right, it's compressor surge. I added shims to make the spring tighter, that made it worse. I took all the shims out and only left the spring, that helped a bit. It seems that if I'm making < ~2psi, it surges. 2+ it blows off correctly is that acceptable?