I just got this ecu and the seller told me it was a virgin unchipped. Part # is 37820-p72-003 which is from the JDM obd-1 integra SI-R. What RPM is the VTEC crossover point supposed to be at? and, what is the fuel cut RPM? I suspect this ecu was chipped! Please help!

 

If all you need is to know if it was chipped or not, just open up the case and look inside.

 

I opened it up and couldn't tell. Would the chip be covered by the second row since the ecu is the smaller square type with stacked motherboards?

 

anybody know the vtec x-over rpm?

 

Open the ecu, remove the knock board which is held in by 3 screws and look.

You are going to get mixed answers on the vtec activation point on a stock jdm p72 as not all tachometers read accurately :-)