Need input on supercharged z06 tune.
Need input on supercharged z06 tune. I bought an 02 a&a v2 supercharged z06 corvette a while back and was told it was tuned at 8-9 psi and put down 600 whp. Right now I am seeing 5-6 psi with a 3.8 pulley. I pulled my tune on hp tuners and it is showing my timing from around 4000 rpm's up at 14 deg. My afr is 12.8 from 3200. From what I have learned this seems way off. Can I get some other experienced opinions? I would eventually like to pulley to a 3.6 and try for the quoted 8-9 psi on pump gas. Need suggestions here also. I'm on the stock ls6 with 60lbs inj. LT headers and straight pipes. Thanks and God bless, Jeremy
No, it's tuned for that from 3200 to redline. So is the timing not a red flag also? Seems a little low for 6 let alone 8-9, or am I way off? The average that I have seen for these boost levels were 17-20.
Your commanded should match the actual wideband reading. Time to tune it properly if that is not the case. The timing is fine for now you could try more once you get the a/f done but really a dyno is required to see what the motor wants.
Before you do an thing else you need to get a wide band. Next check for belt slip. You need to know your air/fuel ratio not assume. Timing might be a bit low, but if makes to HP then you do not want more. Stock bottom end good for 600 HP.
