I have an M6 '94 Z28 and tunercat and logging software. The car has stock heads, hotcam and I'm about to add 6psi with a superfueler setup for extra fuel. I have 255lph intank already also and 160 t stat and lowered fan temps. I also rarely go above 180 degrees unless it's a really hot day here in FL.

I have a tuning for the hotcam now that seems to be pretty solid, maybe just a little rich if anything.

I was thinking that since I'll be using the superfueler I can just pull timing out of the hotcam tune and leave it's fuel the same since the boost fueling is handled with the superfueler? Is this accurate? If so would I pull timing overall or just in a certain map region?

Also, if that is possible I can save money by not getting a mail order tune and instead invest in an in-car wideband setup and do any additional tuning first for the hotcam setup, then with the superfueler and wideband.

What's an average price for that and where to find? Is there anyway to have it logged with other engine data for tuning purposes?


Thanks,
Ross

 

you should only have to pull timing in the 100 kpa range because that's where all boost is on a 1 bar map sensor. Before I used an MSD 6BTM, I pulled it from both 90 and 100kpa for the sake of safety.