I have a B20Vtec with JUN III, 11.5 Comp, 310 Injectors and fuel pressure set at 62, and Ericks racing chip. The car runs great when you step on it, but runs a bit lean since after my 6th lap, the EGT goes to 13. The idle is driving me nuts, acts like I have a huge cam, idle jumps up and down all the time. Any ideas?

Thanks
Jay

P.D. Did a serach but found nothing that could help me.

 

is the car tuned to those mods? you do have a big cam, lol

 

Erick Racing made a custom chip for it but as a mail order. The Jun III are not big enough to make the idle jump from 1000 RPMs to 2000 RPMs up and down all the time.

 

lower your fuel pressure, adjust your idle screw and look for a vacuum leak.

 

sounds like a vacuum leak.

 

I concur.

 

The JUN stage III cam is pretty big, but not enough to jump a big RPM range, my ls/vtec when it was first built started doing that and i have stock b16 cams, but as others said, check vaccum plugs, throttle cable, and fuel pressure

 

I cannot lower my Fuel pressure because my EGT is in 13 which is pretty hot. The weird thing is that the fue pressure does not move, maybe 1 PSI when I disconnect the vacum hose. I´ll check for vacum leaks and throttle cable.

Jay