Ok I have a JDM 94 GSR in my civic with a P72 ECU, I read up online at the specs for this motor and ecu Horsepower: 178hp@7600rpm Redline: 8200rpm

Thats kool and all I wish mine did that I cant get to 178 hp evidently because the revlimit is like at 7k I cant rev past 7000 does anyone know what my problem could be???

 

Is it throwing any CELs?

 

No when i first did the swap It had a little sluggish throttle response and threw the TPS sensory code i fixed that n that went away

Also one spark plug was dead and i didnt know it i was runnin like 3 cylinders i guess lol and it redlined at like 8900 i fix that problem with new spark plugs and theres like no hesitation now except i cant rev past 7000 so

 

I dont think it can be an automatic ECU

 

if you are using your stcok tach, it might not be accurat. mabie you are at 8200 when it is saying 7000

 

well its a 94 ex civic with the GSR in it and the rpm cluster seems to be right i mean the secondary butterflies open up at 4400 when their suppose to and vtec a little after that at like 5100 or somethin im not sure exactly when vtec does kick in in a GSR but im not sure if thats the problem

 

Could it somehow be the rpm gauge in the EX cluster thats off?

 

Well if you have a revlimiter set to 7,000 RPMS...wouldn't it be normal for the engine not to rev after 7,000 RPMs?

 

for gsr vtec engages at 4500...sec. butterfly engages at roughly 5500...

as for the limit thing...i don't know what to say...

 

Well if my revlimiter is set at 7,000 RPMS why isnt every other GSR's revlimit set at that why is mine different

 

It's prolly just that your tach is off... Double check the oil level, and try to get it to a dyno and get an accurate reading...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stivic &raquo;</TD></TR><TR><TD CLASS="quote">Well if my revlimiter is set at 7,000 RPMS why isnt every other GSR's revlimit set at that why is mine different </TD></TR></TABLE>

maybe somebody else tinkered with it.

 

I was checking online at some ECU codes for JDM motors and everyone knows that the P72 is for the 94-95 USDM Integra GSR but i found that the JDM 1993 Integra GSR which is my motor the people who i bought the swap from said it was a 93 GSR in japan but a 94 in US when i buy mods for it, anyway the ECU for the 93 JDM GSR is Pr3

Maybe that is why my revlimit is messed up can anyone confirm this??

 

hmm nevermind now that i have researched further I see that the PR3 ECU is for a B16A wonder why inlinefour has that ECU with a 93 JDM GSR

 

are you SURE that your ecu is a p72 and your block is a b18c?

 

yes block says B18C and ECU is P72 unless its a fake ECU with like a P72 sticker on it lol

 

find a friend that has a 94-95 gsr and ask if you can borrow his ECU real quick and switch them out just to see what happens.