hey another question for you guys
I looking for an ecu, but I can't find an p13 in the tampa area.
I heard of using a p72 Integra GSR or even a chipped p28 i think thats from a sohc vtec motor. What are the pros and cons about using a gsr or p28 ecu.

 

is the p13 the the vtec prelude ecu? if so is it the 4th or 5th generation one?

 

yeah it's the vtec one both gen though obd1 is 4th while 5th is obd2

 

tru, r u sure a sohc vtec would work for a dohc h22 vtec engine? doesnt seem like it would but if it does thats straight. how well does a gsr ecu work compared to p13?

 

Both the p28 and gsr ecu will run the motor a little lean on top and therefore probably make more power. The gsr vtec x is way too low for the h22a engine. The p28 will need to be chipped and it will not operate the secondary butterflies on the prelude manifold.

 

so which ecu would be the best to get for a h22 swap like hes doin. yo santacruz are you puttin in a h22 (4th gen vtec) or a h22 a-spec (5th gen)?

 

I'd stick with the h22a ecu.

 

i have seen a p72 in preludes before, but when does the vtec kick in is it really too low, and i have a jdm h22a obd1

 

ideally, find a p13. i ran a gsr ecu, and it made more hp but less tq; however, it did run a little too lean for me to comfortable without the proper tuning i got along with it. right now i'm running a hondata p28. no butterflies- and while the dynoes are identical to the gsr ecu dyno, you can notice at low-throttle driving the lack of the torque that the butterflies gave. . . .