pbdrew15

Guys, I'm going for a new tune setup as I've just moved from 800 feet elevation to 4200 feet. The car was previously tuned without a MAF on speed density tune using HP tuning. I bought the car that way. Now, I'm contemplating if a MAF tune will be a better way to go? Pros and cons to either way? And with my setup will a stock MAF be adequate? Or larger? If larger, which options are best and easiest? Car is an 01 Z06, 408 forged stroker. 11.5:1 CR, Dart 225 heads, 236/244 on 114lsa- .625/ .625 lift, FAST ported to 92 intake and throttle body. ARH long tubes, catless mids, stock ti exhaust for now.

Only problem currently is the elevation change and during idle it sits at 1000rpm and seems to after about 30 seconds of idle, switch into open or closed loop possibly and then runs EXTREMELY rich. So much that raw fuel can be seen out the exhaust and the smell. Did this even at 800feet. Any tuning guidance or input is def appreciated guys.

charger21

Its Bruce

http://forums.corvetteforum.com/c5-f...-maf-tune.html

I would just stick with the MAF unless you plan to max it out.

Bill Curlee

I have a similar spec cam and heads on my 02 ZO6. I run a stock MAF and don't have any issues supporting 450 RWHP.

Your idle transition is all in the tune and if done correctly, should be fine. Ask your tuner as he should know best.

BC

pbdrew15

Thanks Bill. I do have a 408 setup as well so I know ill be in the 515hp+ range. But I have decided for sure to go Maf. Prob end up using the LS7 maf just to be safe.