99 Y7 motor with a MT Y8 intake manifold question.

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02-23-2012, 03:52 PM

Marvin1985

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99 Y7 motor with a MT Y8 intake manifold question.

I have a 99 DX 5spd civic hatch. P2E ecu. My plans are to do a Y8 head swap on the engine. I either will get a 99-00 Ex engine harness or wire in the vtec etc myself.

I have a 99 Y8 5spd intake manifold with TB and IACV coming in the mail as i type this. CAN I RUN THIS ON THE Y7 MOTOR WITH THE P2E ECU FOR NOW? OR must i wait to get another ecu or the head swapped in 1st?

Is there a solution to wire up the 2 wire iacv to be ran with the p2e ecu?

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02-23-2012, 03:55 PM

Marvin1985

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

for those of you wondering I AM NOT GONNA DROP THIS SETUP AND SWAP IT. Im in the steps of boosting the motor. its MY project so keep OPINIONS to your own.

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02-23-2012, 03:58 PM

grumblemarc

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

YOu should learn to search.

Quote:

Originally Posted by 94EG8

If it's a manual Y8 you'll be throwing IACV codes and have a fluctuating idle, if it's an automatic it will throw a mainshaft position sensor code eventually.

https://www.google.com/search?q=P2E+...ient=firefox-a

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02-23-2012, 04:04 PM

Marvin1985

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

ive rattled my brain reading stuff on this. also to many broken links

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02-23-2012, 04:08 PM

grumblemarc

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

The answer to your question is "Yes". Even though it's wrong.

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02-23-2012, 04:10 PM

Marvin1985

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

Quote:

Originally Posted by grumblemarc

YOu should learn to search.

https://www.google.com/search?q=P2E+...ient=firefox-a

compared to this other thread im running the Y7 engine and p2e ecu NOT the Y8 engine with a p2e

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02-23-2012, 04:12 PM

grumblemarc

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

Quote:

Originally Posted by Marvin1985

compared to this other thread im running the Y7 engine and p2e ecu NOT the Y8 engine with a p2e

There were pages of other search results too.

If the head matches the ECU then what's the problem? None then.
Here's search results for your IACV question.

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02-23-2012, 04:24 PM

Marvin1985

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

problem is if i wire the harness to the 2 wire iacv will it work fine on the p2e ecu since its setup for the 3 wire iacv?

edit: think i found answer. i just need to move 1 pin on the ecu from b6 to b23 and then just unpin and disregard b15

CORRECT??????

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02-23-2012, 05:47 PM

HondaPartsHero

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

No it won't run fine. The P2E looks for a 3 wire and the P2P (5 speed ECU) looks for a two wire.

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02-23-2012, 05:50 PM

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grumblemarc

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

I don't think the word "fine" was mentioned. I don't know why people think ECUs are one size fits all.

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02-23-2012, 05:51 PM

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Texas4door

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Re: 99 Y7 motor with a MT Y8 intake manifold question.

Well, whatever you do, DO NOT get a whole new engine harness; not worth the cost or the headache (or you'll end up like me and have a plug or two missing and then arguing with the seller over the phone about the harness not being complete, etc etc)

Just add the wires and snag a P2P ECU and you should be golden
^^