what's better to run on my 94 obd1 gsr, p28 or p72 ecu. i have a b18c1 engine with blox stage 2 type b cams, supertech valvetrain, AEBS ported intake manifold wit 68mm throttle body port match, Hytec replica headers, and aem intake

 

well you drive a gsr, why wouldnt you use the gsr ecu? either way you need to get tuned with those mods

 

The AEBS IM is single-stage, so p28 has everything you need (and is cheaper). You could keep your p72 or sell it and buy a p28 for a little profit.

 

does it matter that the p28 is built to supply for a 1.6L and the P72 is built to supply for a 1.8L? I would think that the ecu closest to his current motor would work better

 

An untuned p28 would be a bad idea. I was assuming he would tune. If not, p72 is the better of the alternatives, but a tune is practically necessary with those mods.

 

p72 i had it on my obd1 gsr way faster then p28

 

thats what i was thinking, if he's going to use an ecu for tuning, either one will work fine, but if he's going to run a stock ecu on that set up (which wouldnt be recommended) might as well keep the gsr ecu since its closer to what he needs

 

i had a chipped and tuned p28 but that burnt out. i asked my friends if they had a ecu for obdi gsr and my friend said he had one from his 95 gsr which was a p72. thats why i was a little confused. i plan to chip it and tune it so what do you guys recommend. p28 or p72

 

if you plan on chipping it go with he p28. Its easier to find one of those than a 94-95 gsr one anyway