On A Stock 500 Efi 6 Psi Has Been Great.going To 7 Psi How Much Hp Will Increase...is It Too Risky?motor Has 50 Hrs..

leave it at 6

I would ask Dustin

Here is a video of mine with 9psi it really wines
Don

http://www.speedwake.com/photopost/s...cat=519&page=1

http://www.speedwake.com/photopost/s...cat=519&page=1

Link Did Not Bring Me To A Video

Whipple Said No Problems.thought I Would Ask
The Board Gods...
How Much More Hp Would It Make.or Rpms

sorry you may have to be a speedwake member
Don

P,S, Dustin gave me a nice combo to run I jest rebuilt my hp500's they made 778hp and 795hp at 5300 rpm

Can you PM me the scoop- doing mine now

Ttt

Every Psi will increase HP by about 30 or roughly 2 mph. 7psi is about max for a stock 500 on 93 octane.

if you have stock head gaskets i would not do it they have been known to blow

Thats My Concern..head Gaskets.is This A Big Concern With Stock Gaskets On The 500 Efi