UrS4

Hi guys,

I wanted to know if anyone has checked their air fuel ratio after they got a canned tune, Bamachips, Brenspeed, Evo Performance. I will be running in an event soon, ten twenty minute lapping sessions, and I would hate to be running lean as I will be running the car full out on the track.

I am most concerned with tunes from Evo since I have theirs. I know Fred said all his tunes run between 12.6-12.8 which should be like the stock A/F.

I know the safest thing is to put the car on a dyno but the event is coming up and my schedule doesn't allow a dyno visit. I am hoping that enough of you will respond and put my mind at ease about the A/F.

UrS4

nobody can help??? nobody knows their A/F ratio on their custom tunes?

Fly

12.8 with my Brenspeed 91 tune.

GT John

13.0 at the exhaust

With a 93 Xtreme Tune from Fred at Evolution Performance

allfyre

This graph shows my A/F, this was done at Evo.

mac10chap

mine is at 12.8 also. it was running in the mid-13's with my first tune from steeda but when i got it dyno'd, we got it down quite a bit.