i dont think u can run a p28 on a 3 stage vtec
theres only 1 vtec point on that ecu and u need 2
get the correct obd2 ecu

 

poping. ehh..

did you use the Right Spark plugs on the engine.

the D15b Vtec motor is not the same. runs diffrent heat range plug. Same as B20Z/B20B plugs

I have d15b. i noticed that first off.
next im will be running p28 to but i have mine chipped..
natrualy the d15b is made to run to 8000rpm and your ecu cuts at 76000rpm (p2

check your exhuast system for Air leaks this cuase that problem as well
check exhuast header dounut, crush rings in the tail section

also you may be burning oil a small amount but enough to cause that... my old motor did that

check Timing belt timing.
check dizzy timing.
check spark plugs for fouling ( souty, wet, oily ? )


get back on this i like to know.. what you found?


falkhen