general23cmp

iTrader: (1)

I was talking with a guy that programs ECMs, and he stated that for boost levels of 7-8psi, that he can easily program the computer to run with a 1 bar MAP sensor. How is this possible? How can the computer detect the boost?

This guy is a pro, so I am sure there is something I am missing, but I don't know what.

Thanks.

Jake@EPP

A 1bar system will only read 0-100kpa , this is NON boost. A 2bar is probably what he meant, a 2bar is good for 14 or so psi of boost, this is how the computer can detect it.

98turbls1

iTrader: (17)

He's probably talking about you not having to upgrade to a 2 Bar Map because he's going to tune it with the MAF...

Speed

iTrader: (33)

I'm guessing he's talking about leaving it a MAF system. I ran fine on MAF but I like the drivability of the SD better and it does the heart better to be able to log the real manifold pressure.

taillights

iTrader: (2)

I tune my car with a 1bar in it but tune it with the MAF still on it and I am currantly running 7to8lbs of boost with no problems. But if you intend on running more boost it is wise to use a 2or3bar map Or you can turn itup at the track and scan it and adjust as needed.

Boostaholic

iTrader: (4)

You can program a boosted car on low boost to work with a 1 bar map, it will just get super rich when it first comes onto boost then go back to a normal AFR as boost goes up to full, which is not ideal

picture a afr going from 14.0 as you punch it down to 9.8 as you reach 1psi boost and back to 11.5 when you get to 9psi

ive done it before but its not the best idea, and tuning is a very important part of not blowing up your forced induction project