View Full Version : Supercharger Problems

05-25-2003, 06:29 PM
OK I got a Kenne Bell kit on my car and it begins to spark knock at 4500. I am running six #s of boost and have 24 lb. injectors. The dyno guy said my fuel pressure was fine. When I went to the dyno place I had only 273 rwhp and I think it should be higher am I correct? What should I check?

Black Snake
05-25-2003, 09:44 PM
What gap are you running on your spark plugs? What are you running for ignition? What are you running for a fuel system? What was your A/F ratio?

05-26-2003, 07:13 AM
Definitely not making any power...I was making 276 rwhp with just a catted X-pipe and shorty headers on my '97 Cobra.

Most KB boosted Cobras make around 360-380 rwhp with 8psi so you should be in the 340-350 range at 6psi. Like Rob mentioned....what is your A/F ratio and where are you plugs gapped? I'd suggest gapping the plugs at .035.

Are you running an FMU with the 24# injectors? If you aren't....you need to upgrade your injectors. Also look at a KB boost-a-pump and a KB Boost-a-spark to assit in your fuel delivery and your ignition.