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, 42lb injectors, 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.
As a daily driver and the fact that I live at 4200 feet and within 100 miles in any direction the elevation can go up and down 1200 feet. Will SD be able to compensate for those type of changes? What if I want to drive the car to Florida or Cali, what then when it's at sea level with a SD setup that was tunes at 4200?