WELL I HAVE MY BUDDIES EVO BECAUSE HE WANTED TO INSTALL nos kit but picked up the car and found it was missing under Load and at wide open throttle
i am thinking it might be a fuel deal

because at half throttle it doesnt miss
any help is appriciated
THANK YOU

 

assuming you mean misfiring? you need to clarify what your talking about.

If its misfiring check plugs for being fouled and check plug wires.

you need to be more specific, was it a wet system that was installed?

 

there is no nos on the car at this point

at full throttle it seems to missfire at about 5 to 6 grand

i checked the wires and was going to but in some colder plugs for the nos

the car has a after market blow off valve on it

i think that the stock one should be put back on i ve been told that they dont do anything

thank s for the help

 

Mine was doing the same thing. I replaced my plugs with NGK BPR7ES plugs (cooler plug) and mine runs great now.

 

.......except make your car run ruff. What type of BOV is it? There a few brands notorious for creating stalling issue. Sounds like that that may be the culprit. However, I have never seen a BOV make a car miss at high RPM like you describe. I would start by reinstalling the stock unit and take it from there.

BTW..If you put in colder plugs make sure you gap them correctly or you will experiance similar probs. I believe they should be around .28 or so. You may wanna do some research and check that your self though.