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good cruising PSI
Posted: Wed Oct 29, 2008 5:15 pm
by joeWM
so i just ordered my first MBC and gauge and i was wondering what is a good PSI to set it at, i was thinkin like 9 or 10, what do you guys think? only mods i got are TMIC, coffee cup, K&N cone air and exhaust.
Posted: Wed Oct 29, 2008 7:01 pm
by BXSS
You should be OK @ about 10psi - just listen for detonation, if you here any turn the boost back down to stock levels (8.7psi is stock)....
Posted: Wed Oct 29, 2008 7:33 pm
by RJ93SS
with a better intercooler and a hood scoop you could probably run it closer to 12, make sure to control your boost off intake pressure insted of turbo pressure
Posted: Wed Oct 29, 2008 7:54 pm
by joeWM
ok awesome thanks guys
Posted: Wed Oct 29, 2008 8:37 pm
by BXSS
+1 more boost = possible with better charge cooling, though I'd probably put a Walbro 255lph pump in the car past 10psi just to be safe as the stock pump is OLD.
What is done to the exhaust?
Posted: Thu Oct 30, 2008 5:02 am
by joeWM
i got a 2.5" CBE with a silverline muffler with duel 2.5"outlets
Posted: Thu Oct 30, 2008 5:58 am
by Imprezive
on a stock turbo? You'll hit fuel-cut before you hurt anything. But keep it conservative, you can get a few more psi out of it.
I'm running ~10psi with a wrx intercooler and td05-16g with no detonation or anything, so you will be ok.
Posted: Thu Oct 30, 2008 6:00 am
by asc_up
You'll be fine at 10 PSI with those mods. I ran my car at 10 PSI stock for about 4 months.
However, to really take advantage of how fast the VF-11 can spool up, you might consider getting a 3" catless downpipe. I currently have a full 3" catless exhaust and that turbo is fully spooled by about 2700 RPMs.
Posted: Thu Oct 30, 2008 7:29 am
by 92ss satinsvoice
lol, damn. i was running a 16g at 15psi with stock injectors, stock pump. front mount and an exhaust. unfortunately it only lasted about 3-4 weeks.
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it was really fun though. i knew i was doing it all rong but just didnt care. i just wanted a reason to build the motor.