Afraid to tweak with my Xcal2... help please..

[exindust]

I wanna get the most out of my 91 octane tune i got from MT but im afraid to bump the timing and what not because i have never heard what pinging or detonation sounds like... so im afraid i wont be able to tune it correctly... any tips?

 

[Mike97gt]

I wanna get the most out of my 91 octane tune i got from MT but im afraid to bump the timing and what not because i have never heard what pinging or detonation sounds like... so im afraid i wont be able to tune it correctly... any tips?

i maxed the timming on my and maxed the lean and have had no problems. if you hear a metalic knocking sound or a rattle fromt he motor back the timming off, it only alows for a couple of degrees of timming in the 4k+ rpm range

 

[ForPointSex]

detonation sounds like your valves are making noise. My mail order tune had the air/fuel mixture at 12.8:1. I leaned it out 2% and got 13:1.

I could increase 2 deg of timing (Max my tune would give me) without a problem too.

 

[thomas91169]

do it in small increments and you should be fine.

 

[lvmustanggt]

I have SCT Xcal2 SF and I put 4 % fuel in WTO and 2 % timming 2000-4000, 4000-6000. Now my car runs great , look at my signature