i have a 91 ef si car with ls swap
it has 12.5 to 1 compression and a chipped pm6 ecu
to my knowlege it hasent been tuned

my problem is that if you floor the gas it boggs and looses power.

the only time that this doesnt occur is if you are above 5000 rpm.

so do i need a tune or is there something else wrong with it.....


also who in north carolina tunes obd0

thanks for any help

 

Try switching the 2 outside tps wires around