how to remove ecu

[michael6593]

Where exactly is the ecu in the cb7? I was gonna go to the junkyard and try to find a p12 edu. Also, where is the ecu in the prelude? thanks.

[Wickit]

Passenger floor board/foot rest area. under the carpet.

[wildBill83]

What do you want with a P12? Are you doing engine mods/swap? Going turbo?

[michael6593]

thanks! and i was just doing some reading on the forums, and a lot of people were talking about using the P12 ecu for the cb. They said it has a more aggressive tune, and it will work fine because the f22 is the same as the one in the prelude.

F22A1: 125 hp (93.21 4 kW) @ 5200 rpm. (Accord DX, LX). The 1992–1996 Prelude S had a F22A1 but because of a different more aggressively tuned ECU (P12), the power output was 135 hp (100 kW).

[wildBill83]

Generally they pair that tune with engine mods to truely take advantage of it. If you want a real tune get a P06 chipped and tuned by a tuner. One tune for one motor may not work the same on another nearly identical motor.

I don't think the gain in HP is just from a tune. Now if you can get the intake and full exhaust from the prelude you might notice the tune.

[michael6593]

well i have a SRI and full aftermarket exhaust. so will this take advantage of the p12?

[Wickit]

Those 2 (depending on brand) probably give u about 2-5 horsepower. I know password jdm has a power chamber intake that gives a proven 7hp increase through its design. Not sure if anyone has fit one on a cb7 tho. Ebay SRI & an ebay full exhaust probably gives about 5 more or less.

[michael6593]

cool. So does anybody know where i can find a p12 for cheap? The cheapest ones i can find are on ebay for 79.99. I've read that people can find them for around 50. also do i need to find one that is specifically for a manual trans?

[deevergote]

"Where can I find..." is not allowed here. All it takes is one jackass to say "I'll sell you mine" and you're both permanently banned. Go to a junkyard. You can generally get one for $15-$30.

And Bill, the P12 will give roughly 10hp over the PT3. Mods will most likely make it less effective (such as an H23 manifold, or A6 camshaft.) The difference in intake and exhaust piping on the Prelude is negligible. The majority of the power is indeed from the ECU. It's one of the few true plug and play "OEM" upgrades you can do.
It is ONLY effective on an F22A1 or F22A4, not the F22A6.

[michael6593]

alright awesome. I can find this ecu on any 92-96 prelude s with an f22? also, does the prelude have to be a manual? Or can i get one off of an auto?

[dj_ender]

alright awesome. I can find this ecu on any 92-96 prelude s with an f22? also, does the prelude have to be a manual? Or can i get one off of an auto?

Be careful you don't acquire an OBD2 version of the P12 (96 only), they are quite rare, but they are around and won't work on your car. Get the ECU that matches your car, ie. manual or auto.

[Ander]

I don't think the gain in HP is just from a tune. Now if you can get the intake and full exhaust from the prelude you might notice the tune.

It's just from the tune.

alright awesome. I can find this ecu on any 92-96 prelude s with an f22? also, does the prelude have to be a manual? Or can i get one off of an auto?

It can be automatic or manual.