hey i did an h22 swap in my 93 civic 3 months ago and cant find out my problem with horsepower

its running about 150 horsepower only.
after months of testing ive come up stumped. compression is good timeing seems good. spark and fuel are strong.

the thing is power is good 0-3000 rpmish then after 3000 rpm if ur at full throttle power wont increase but as you let off the gas slowly you can feel the power that should be there for a split second till you let the gas off enough to slow engine rpms.

power is only good at 1/4-1/2 throttle for some reason. can anyone help?

no cel light comes on and ive checked wireing 4 times over now. a/f guage is fine and vacuum is steady at 20lbs

the only thing is i have a ps-20 map sencor from an old accord.. instead of a prelude one wich i dont know the model number.. could it be that?

 

get a fuel pump from a teg or lude

 

ive got a walbro 255lph fuelpump
msd ignition, and coil, wires, and irridium plugs

no power at full throttle above 3000 rpm but there is a sign of power as your letting off the gas

 

what ecu you running

 

the one that came with the swap
an unchipped jdm prelude ecu
i believe p13

 

really .....hummm
im assuming you did a full tune up on it .....
to me it really sounds like a fuel problem....

have you added resistors fot the injectors??

 

and what year is that map from....

any map from 92 on should work fine .....

 

i have a resistor box for the injectors

the map sensor is labled ps-20 it came from an old acord id say 89-90's at the junkyard
ive seen a stock prelude with one labled ps-24 though also ps-22

 

also by unplugging the o2 sencor i get a cel but the motor dosent really run any shittier then it would with it plugged in

 

This actually happen to two h22 swaps I did. Both in 92-95 hatch. I'm not really sure what it is but you get to a certain point and the power band just falls on its face. I wired everything but the egr so I thought that had something to do with it. I never bothered to wire it up and just plugged in a Skunk2 P28 Computer and it was 100 times better. Try plugging in a gsr ecu or some kind of chipped ecu and see what happens.

 

could it possibly be the secondarys arent opening up