axis11

I need some opinion. I have observed that my car can't reach a higher rpm. I could get only up to 6200 rpm on lower gears and then the fuel cuts on and off. On 5th gear, I can only reach 4800 rpm and the fuel cuts for 1 to 2 seconds before it comes back. Shouldn't I be getting more out of a civic? Engine is a non vtec d15b, P2C ecu,P2A-8 head. What could be the cause of a limited rpm? What can be done? ECU swap? Fuel pump upgrade?

HondaPartsHero

Is it throwing any check engine lights?

axis11

No CEL. Its actually running fine except the reduced rpm.

Sleepy_Red_hatch

is the fuel cutting off at a certain road speed, i know some cars have speed limiters in them (i.e. jdm cars) but some usdm cars do also, (210ish KM/H for a 2001 TL lol)

axis11

On first gear, it cuts at 6200rpm ( 55kph). On second gear 6200rpm( 110kph). On 5th gear, 4800 rpm ( 190kph). The engine is a d15b, much smaller than the 2001. A friend has a 98 civic A/T with a d15z4. He said he was able to reach 200kph and there was more coming. If there is a speed limiter, how do I disable it?

Wrona

its not a racecar...

axis11

Yes car is not for racing. Does it mean 6200rpm is all it got? I have read previous threads indicating that a d15b can do better even if stock.ECU currently is a p2c (stock).Any ecu recommendation that will provide additional HP that will match a d15b and a stock harness for 96 lxi?