My 86 n/a seems to hesitate and misfire at 5k rpm's after I put on headers free flow cat and racing beat y-pipe and turbo mufflers with a block off plate. Now the damn thing is sputtering like it can't breath gasping when I am putting my foot to it..If somebody or anybody can help me please do so....tks

 

Is it throwing any codes back?

 

your 6 ports probably arn't opening

 

That's the first thing I thought, but how would that cause it to misfire? Choking on too much fuel? Also, I would think that that high flow cat would be enough to get the ports opening.

Maybe try wiring the fifth and sixth ports open and see what happens.

 

didn't do any diagnostics on the car hopefully it is coming from some fouled out plugs and the cheap ngk wires

 

ok, i'll give it a try and see what happens hopefully i can get it back on the road this weekend.....tks for the help

 

just out of curiosity how hard will it be to wire them open ?

 

two zip ties on the rods. lol

This shouldn't be a full time fix though. I would also check your PILL for the pressure sensor.

 

Still early in the morning, but what rods are you refering to..