I need some help. I have a 95 Z-28 M6. Mods as follows, 350 bored .020, flat top forged pistons, stage II CNC LT1 heads, LT4 Hotcam kit, LT4 ED Timming chain, 1 3/4 headders, Borla exhaust, 3.73 gears, accell 300, SLP coldair, 52mm throttle body, SVO #30 injectors, Walbro 255 lph fuel pump.

Well I had Ed Wright do my base tune and the car runs good. The plugs all look good, but it does not run with all the other hotcam guys here. So this is what I did. Went to the track and ran the car. It was very hot but it ran 13.6XX at 102.XX. For all my mods this sucks. So I loaded the stock program with only changes were injectors and offsets, gears and fan settings the car ran 13.5XX at 104.XX. This still sucks but its better.

My question is where do I start with LT1 edit? What tables do I start with? If I don't get this car to run where it should I am going to sell it, because at this time I have so much money and time into the car that I am disgusted with it.

Thanks

 

I would get a scanner either http://www.ttspowersystems.com/DM_Software.htm or http://www.andywhittaker.com/ecu/ecu_software.htm. I would also find a chassis dyno with a wideband setup that way you can see exactly what the car is doing.I would not start tweaking it blindly , you will hurt the engine that way.

 

If the car runs well at part throttle and stuff and all you're worried about is wot then it would be pretty easy to tune it on a dyno.