ls b18b to gsr jdm b18c swap

[slom420]

i have recently done a swap in my integra. i went from an ls b18b to a gsr jdm b18c. i have not upgraded my ecu yet so the vtech is not running. when i start it the rpm's go up to about 3.5-4 thousand rpm's. after about 10 mins it drops down to 1.5 is that because of the ecu or something else????? my buddie who helped me said it my be the pcv valve??? it does not effect the performance in any way but it is a concern.

[sol_1320]

check your map sensor & tps sensor make sure they are in the correct location

[slom420]

all secure my buddie said it might be the pcv valve?

[acrite]

my accord did the same thing when i put the h22 in it and it was the tps

[AnTi_RiCeR]

it is definately your ecu. Go get the one you have now chipped and remapped to work with vtec, or go and buy a b18 vtec ecu.