Foster382

This is what I'm working with, zz4 crammed, vortec headed 350 roller block with a 454 tbi #90 injectors.

I'm lost a tuning but I have done some basics to it. I did all my ve kerning and that's all good. I also messed with the ae rpm% table and increased it all by 10 points AMD when I floor it the ae light on the WUD turns yellow. My injector pulse files and I coddled the spark table Fast had posted before.
What's getting me is when I floor it from a dead stop it sputters then it takes off. I also did some data logging at that time and I'm getting a butt load of spark knock in the 2800 to 3200 rpm range at the 90-100 kpa.

Ronny

iTrader: (1)

Lean AE would pop in intake. sounds like too much AE. I would reduce AE 10% and see how it responds. I had best luck on AE starting known lean and enrichen in steps.

Knock could be false. Pull some SA 90-100 MAP and see if it continues to K. If continues pull more SA and again if continues it is false(mechanical K).

Foster382

Thank you sir, I'll give it a shot when I get off work

Foster382

I fixed the sputtering some what, it's not as bad. I went with a capreice ae-rpm% but the knock I didn't test. It may be mechanical cause my belt mentioner makes a rattle noise. I took it for a few races against a 86 Iroc with a carb stock rebuild and a 4.7l HO JEEP. I got good tq I would assume cause the jeep has around 330tw and I kept up with him. As for speed it was even in 1-2.5k rpm till ot got into D gear them I started to pull past them both. Is it just bad low end power with a zz4 cam?

ed