car is breaking down at any rpm higher than 7500.

We have put a new msd boxs coil and ignitor on made no differance. car is burning fuel very clean almost to the point it is lean so i am wondering if my fuel cell is to small for the pump and it is sucking the pump and and straving it of fuel.

the motor is a built h22 13.0 to 1 compression, port flow head itbs. the only thing i changed from last year was the bigger fuel pump.

please feel free to ask any question that might u might need to help me figure the problem out.

had it on the dyno and graph are fine till arund 7 to 7500

 

close the gap up on the spark plugs.

 

This may sound silly obvious, but it sounds like it just needs some fuel.

 

It also could be rich. What is the air fuel ratio?

 

well air fuel is right around 12.5 to 13, closed the gap on the plugs to 20 thousand

 

anybody have any idea where to look

 

Well its really going to have to be fuel or ignition. .

If the A/F is fine even when it begins to break up i would go over everything in the ignition system.

Cap, rotor, wires, etc

What type of plugs are you using?

 

Close the gap up to .015". If it doesn't get better, it's not a spark energy problem.

What ecu? Stock distributor?

 

using aem ecu, msd digital 6 box and a blaster 2 coil. am going to switch to the aem coil packs this winter.

i will try and close the gap to .15.

 

H22 in a civic?

Try to change TPS.
I had the same problem and changed the TPS after that it was all gravy!