Hello people!

The car misfires at about 7000rpm, at least it feels like it. It backfires and complete loses its power, than aften half a second it continue to pull all the way to the rev limter.

Any one have any ideas?

 

Two things come to mind and sorta go hand in hand - you're running too rich and/or you need new plugs/plug wires. What are your mods?

 

Fuel cut if you have the stock ECU. I would happen to me at 9 lbs of boost or higher.

Jon

 

I had 5-6k hesitation from running too rich... I installed an HKS twin power ignition amp and it cleared things right up.

 

Mods are Greddy Power evolution 3.7" exhaust with 3" downpipe...!

What kind of fuel preassure do you recomend, it has have a adjustable regulator

 

Try 38 lbs at idle with a rising rate regulator . Change your plugs and check your plug wires. Call Garfinkle and get a torque brace, if you are going that high in RPM.

 

PLUGS, PLUGS, PLUGS! or fuel filter.

 

What kind of plugs do you recomend? NGK #?

Plugwires are brand new J-spec wires of some kind... The engine got flown from Japan to Norway 1 month ago

 

38lbs is how many kg/bar?

 

Come on now, we gave you enough help regarding your car; do we need to do your math homework too?

 

Plugs are BUR7EQP and BUR9EQP stock. I replaced mine with BUR7EQ and BUR9EQ without any troubles.

 

BUR9EQ all the way around. im sure that the platinums are better for longetivity but copper is a better conductor. i used to work at kragen and my buddy still gives me a really great price. cant beat 2.50/plug and in stock. PLAT are like a week order and i can get them for around 8-10 bucks. just easier to go with the Cu, and dont forget to go 9"s all around.
kris

 

Are you still running the stock ECU? It sounds more like a fuel cut rather then a misfire.

 

Yes its the stock ECU! Now that i have installed a boost gauge I think its the fuel cut thats giving it a hard time...! Time to get a boost controller...