Hi! I am new to this but am in need of some help. I have a 96 Z-28 and just installed LT4 heads, intake, and hot cam. The car is misssing at low rpms and idel. Mainly it just shows on cylinders 1 and 2 the worst. But sometimes it will show very little on the others. I have new plugs, wires, and opti. I have looked for a vacumme leak but have yet found one. The car also dosn't feel like it has the power it is supposed to. If anyone has any ideas let me know. Thanks alot!

 

Did you get the computer tuned for the new setup?

 

Yes I sent the computer off to PCM forless and had it programmed. I have also noticed it to run real lean around 2000 rpms. At other rpms it don't. I am runing about 58lbs of fuel pressure on 30lb injectors. Do you think I might have a vacumme leak towards the front?

 

I don't know about a vacuum leak, but did you tell Bryan you're running 58 PSI on those 30s?

 

I didn't tell him that. I have an adjustable reg and didn't really know what fuel pressure I would run. I still haven't really decided. But I did tell him I was running 30lb injectors. Anybody have anymore ideas?

 

Well 58 PSI is quite a bit of a difference from the stock 43.5.
Set your regulator to 43.5 and see what happens then.

 

I tried it at 45lbs put it idles lean there. Thats why I turned it up. Now it runs just a little rich at idle. Anybody have any ideas?