Ok, car is starting to come back together. Just got an innovate xd-1/lc-1 combo set for Christmas. What afr should I be shooting for with the following setup?

88TII
RB street ported motor
stock s5 turbo
stock TMIC
True CAI
Full 3" RB exhaust
ported wastegate
walbro 255 fuel pump
marren 750cc secondaries
Apexi SAFC for tuning

running between 10-12 psi

So what should I shoot for?

 

12 - give or take.... 11.5 to 13 would be a decent range

 

13's is never good at 12 psi, don't even read that. Keeping in mind that you are running the stock TMIC, and have no way to change your timing, you should err on the side of richness. Keep it to mid 11's, under boost.

There are some good tuning threads in the Single Turbo section, check them out.

 

sounds good.
Oh, just as another reference...what egt should I be looking for? I think from what I've read 700-750? Sound about right?

 

I never go past mid 11s myself. 13s is a bit hairy for my tastes..

 

especially with the top mount, and people who arent sure about tuning shouldn't comment. 13's with this setup at high boost could likely mean the end of the motor.

 

I'd definately say mid 11s. And don't push it too much as your TMIC will heatsoak quite fast.
Specially in situations like Autox and drag racing where you're stopped/slow speed for the most part the entire event.

 

the top mount intercooler is ok for stock level HP but the death of your engine when you push the stock turbo hard. If you want more you need to get a FMIC and stop bs'ng yourself. Your mods are starting to add up and intercoolers are very cheap these days and available everywhere.

 

not to hijack but i just wanted to know the higher the number the leaner it is and the lower the richer?

 

Yes.