I was hoping to have crossed the 500WHP threshold already, but so far on the ZFR I've done ~410-420WHP (with other supporting
mods).
It hasn't been an easy build, as there were a few unforeseen obstacles, such as running out of high pressure fuel pump even with a ZZP stage 1 camshaft package, CNC ported LNF head, electric vacuum pump, and then so on.
So lets try this again:
http://i43.tinypic.com/24q2s8g.jpg
kranz38, if I may ask:
How much boost are you running on your ZFR?
With your ZFR, did you also experience severe compressor surge at over 30psi?
Did you end up discarding the Borg Warner EFR wastegate canister for a forge wastegate canister with a higher spring rate?
I've given up trying to break ~420 WHP or so with the ZFR (on pump gas, with supporting
mods) and I'm now on a Treadstone cast manifold with an EFR 7670:
http://i43.tinypic.com/24q2s8g.jpg
I'm running a custom prototype HPFP from , but its been so close, yet so far:
http://i43.tinypic.com/jpk6ts.jpg