Turbo Tune
Thread Starter
TECH Apprentice
Joined: Nov 2005
Posts: 304
Likes: 0
From: Newmarket, Ontario
Turbo Tune I had my car tuned with stock MAF and stock MAP to 10psi in 5th gear (4.11 in back). When in 4th the car only makes 7lbs boost. It was tuned by changing the fuel enrichment tables (not base fuel map).
Here's the question. When I get on it in 3rd or 4th and it is not making full boost, is it seeing to much gas or does the fuel get scaled off the MAF, so my A/F is correct with less boost?
Here's the question. When I get on it in 3rd or 4th and it is not making full boost, is it seeing to much gas or does the fuel get scaled off the MAF, so my A/F is correct with less boost?
If this is not a 2 bar setup, then you would be running rich at any boost level that is lower than the highest. That's why the 2 bar setups have become so popular, it adjusts fuel based on the boost level up to 14.7 #'s. And it keeps your A/F correct.
By the way, you planning on changing those 4.11's? And where is this turbo mounted?
By the way, you planning on changing those 4.11's? And where is this turbo mounted?
Thread Starter
TECH Apprentice
Joined: Nov 2005
Posts: 304
Likes: 0
From: Newmarket, Ontario
Yea, planning on getting rid of the 4.11's, to damn high of a ratio, it is mounted in front.
So just to confirm, the ECM will not scale the fuel relative to the air flow through the the MAF under boost?
So what does it use the MAF for, part throttle only?
So just to confirm, the ECM will not scale the fuel relative to the air flow through the the MAF under boost?
So what does it use the MAF for, part throttle only?
