i got a chance to get a PR4 ecu for my JDM b16a that has been chipped we ran it and it seemed good... but is the PR4 ecu a good choice to go with the b16a?

 

no , not unless its chipped for a b16 and they added vtec

 

well see thats what he told me... and when i tried it out it worked fine vtec engaged and it was wrote on the top b16 vtec but just keep my PR3?

 

pr4 works (with shift light vtec), just a little lean when vtec hit, get an vafc, it does small tuning and engages vtec, for pr3 it need to be chip in order to have vtec, no speed governor signal to ecu

 

That pr4 might be modded, but how well?

You know a pr4 is a non vtec ecu for a 1.8l right?

 

yeah i know its for the LS... but dude told me it was chipped for the b16 vtec... i did try it out and it ran different and vtec never engaged... should i just keep my PR3 ecu? i mean this other one it ran alot different better fuel response and all but like i said vtec never engaged