Anyone tried a p12 ecu in their accord?

[handsoff012]

i wanna do the ecu swap, 5-10 hp is better then nothin

[palinix]

I've had the Prelude ECU for the past 7 months. I works great.... I bought it off a member. This has been known for a while....
Still not sure if/what there are any internal engine differences.

Did you notice any difference in lower end torque since you started using the P12?

[Thomas_LX]

I'm hesitant to say... considering how notoriously inaccurate the butt-dyno is
But... it seemed faster, and revs "quicker" like... more responsive. gas mileage stayed about the same... and everything works. I'd say no harm no foul!
Although I am a little unsure how this will affect my Smog. Hmm... same goes for my IABs being hooked up to Vaccum.... but thats neither here nor there.
Dont expect to be amazed like you just got mad-awesome V-tak added to our engine...but for the cost-to-horsepower ratio... its not bad.

[palinix]

I'm hesitant to say... considering how notoriously inaccurate the butt-dyno is
But... it seemed faster, and revs "quicker" like... more responsive. gas mileage stayed about the same... and everything works. I'd say no harm no foul!
Although I am a little unsure how this will affect my Smog. Hmm... same goes for my IABs being hooked up to Vaccum.... but thats neither here nor there.
Dont expect to be amazed like you just got mad-awesome V-tak added to our engine...but for the cost-to-horsepower ratio... its not bad.

good stuff. I suppose the more bolt on mods you have on the cb7 A1, the less of a difference you would feel after switching to a p12 ie. an A1 with factory IM and exhuast manifold would show the highest performance increase.

[handsoff012]

would a p12 do anything 2 my f22a4 engine? all i have is intake

[InvaderTrax]

The Prelude F22A1, and Accord F22A1 and A4 are all the same as far as the engine goes. Only difference is the A4 has the nice header, so a P12 would show good gains for an A4 as well

[Shadow1]

what year prelude was this out of?

[drew12000]

nice guys! would you have to reset the p12 after you install it? you know when you add boltons?

[AccordXRacer]

Im going to see if this works, my brother has a 1995 honda prelude s in a 5 speed, i was telling him the other day that he had the pt3 since he was an owner of the f22a1, but turns out that im wrong, thats no wonder everytime it drive his car it feels faster(more responsive) than my 1990 A4. Eveything is stock exept for the intake that he has on there. Does anyone know if the prelude s come with an accord trany or prelude trany? Just wondering becuase if it came with an f22a1 then it may possibly come with the cordie trany as well.

[H23CB7]

what year prelude was this out of?

i would say 92-95

[Bcozzi71]

i no i upgraded my ecu already and it has more power....It pretty sweet

[Shadow1]

i wish i would have grabbed that p12 ECU out of that prelude i found at the junk yard. $25 and i could have had more HP anf TQ. lol

[Kurobei]

For you automatic guys with a A6 motor...

I was curious and tried just the TCU from a automatic 1993 Prelude S on my old CB7. One thing about the TCU that changed the accord was the faster aggressive shifting but other than that it just felt more sportier and I don't know if it made it any faster. The reason why I didn't swap the ECU with it was because on my sisters prelude S, there are no butterflies on the manifold like a A6 manifold would have. I don't know if they changed the manifold on later year S models, but hers is the original engine and it's basically looks like a A1 or A4 model.

I can see this ecu mod might help A1 and A4 motors, but this probably won't gain a whole lot on a A6 intake manifold equipped vehicle. Maybe on low-end but on highend it may kill a A6's power. If the P12 controls the butterflies as well then hey.

Interesting topic tho! I would like to see dyno results, if they come out really good I can see alot of people looking for P12 ecu's and tcu's very soon.

[Shadow1]

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yeah but heres the question: if the only difference between the cb and that year prelude is the ECU, you think the ECU gave the motor in the Prelude a better air/fuel ratio or some type of timing? and the TCU gave it earlier shift points?

i wish there was a dyno around here somewhere so i could test this out. its kinda odd that the prelude has 135hp with the same motor as the cb7 f22a1. if its just the ECU then i mean think about how this could change how much HP you could get just by swaping the ECUs, IM, headers, and intake.

[dark_stalker]

does the ecu have to be the same as your car as in manual and auto?? in order to work?