Anyone, or any other JRSC Preludes having this problem? Boost spikes to 8 lbs and as rpm's climb and I hit Vtec boost drops down to 6 - 6.5 lbs. Any suggestions on what it could be??

I have a JRSC, Injien Intake, Skunk2 Cam Gears (set at 0 - 0), Type-S exhaust Cam, Apex N-1 Dunk cat back Exhaust 2.5"

I have the 6 lbs pulley on.


[Modified by Supercharged97, 8:14 AM 9/2/2001]

 

Not on a lude but one of my friends has the 10 psi pulley. I think that is the upgrade. Anyway, he spikes to 12 from what he has told me. But he has know to lie, A LOT.

 

Alot of times what happens on the base 6psi kits I would see some boost to 8psi because of the back pressure. The cure for that was to upgrade the header and exhaust. Once we put a kamikaze header and 2.5" exhuast that cured it right up. Hope this helps.

art

 

Thanks for the advice......it is just weird because both of the other JRSC Preludes around the area don't spike. Well, thanks again for the advice.