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Need p72 or Chipped P28 for troubleshooting

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Old 09-19-2005, 03:10 AM
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Default Need p72 or Chipped P28 for troubleshooting

I have a 97 civic 4 door with a LS/Vtec swap in it.
Almost complete......It used to be an automatic LS/Vtec, I had enough money to get the swap done, I'm just too broke to spmlete everything.

Its funny how shitty this swap runs when your using a Automatic P75 ECU.

Oops.....any ways....If anyone local has a Chipped Manual P28 or a P72 GSR ECU I could drop in to test the car amd see if thats why its running so crappy.
If so I'll try to save up and by my own ECU.

thanks,
Russ
672-2953
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Old 09-19-2005, 06:22 AM
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Default Re: Need p72 or Chipped P28 for troubleshooting

If the P75 you have is OBD1, it's very easy to convert that ECU to manual tranny, it doesn't have to be chipped or anything. There are jumpers that tell the ECU which parameters to use, so you just have to tell it you want it to use the manual parameters. Anyone who can solder can change the jumpers for you, there are only two things that have to be changed. The biggest problem you're probably having is that the ECU is not mapped for that head. I know the bottom end is the same but the VTEC heads flow very different and have different cam profiles, you that's probably your problem. Throw in some possible problems from not having the auto tranny lockup solenoids anymore, so the ECU gets a little freaked out, and I can understand not running very well..
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Old 09-19-2005, 05:13 PM
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Default Re: Need p72 or Chipped P28 for troubleshooting

Originally Posted by Fabrik8
If the P75 you have is OBD1, it's very easy to convert that ECU to manual tranny, it doesn't have to be chipped or anything. There are jumpers that tell the ECU which parameters to use, so you just have to tell it you want it to use the manual parameters. Anyone who can solder can change the jumpers for you, there are only two things that have to be changed. The biggest problem you're probably having is that the ECU is not mapped for that head. I know the bottom end is the same but the VTEC heads flow very different and have different cam profiles, you that's probably your problem. Throw in some possible problems from not having the auto tranny lockup solenoids anymore, so the ECU gets a little freaked out, and I can understand not running very well..
thanks man....
yeah i think thats my problem.
Now all I need is to get my hands on the right ECU.
which would be better a P72 or a chipped P28?
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Old 09-19-2005, 06:59 PM
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Default Re: Need p72 or Chipped P28 for troubleshooting

Chipped P28 is fine, you don't need the knock sensor or the secondary butterfly control on the P72, and P28s are cheaper. I guess that depends on what head you're using, do you have a B16 or GSR head?
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Old 09-20-2005, 02:05 PM
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Default Re: Need p72 or Chipped P28 for troubleshooting

Originally Posted by Fabrik8
Chipped P28 is fine, you don't need the knock sensor or the secondary butterfly control on the P72, and P28s are cheaper. I guess that depends on what head you're using, do you have a B16 or GSR head?
B16a Sir1 JDM Head......for the block I drilled and tapped a the right most Alternator hole and placed the knock sensor there.
I cut that arm off the Bracket for the alternator.

thanks.

I really just need to get my hands on an ecu to see if the ecu is my problem......
thanks for all your input guys.
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Old 09-20-2005, 02:27 PM
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Default Re: Need p72 or Chipped P28 for troubleshooting

I can't help you find an ECU, but with the B16 head you should be looking for a P28..
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Old 09-22-2005, 06:04 AM
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Default Re: Need p72 or Chipped P28 for troubleshooting

Originally Posted by Fabrik8
I can't help you find an ECU, but with the B16 head you should be looking for a P28..
cool thanks man......I found a guy on Honda-tech that can chip me a P06 converted to a P28.......for 140 bucks.
But funny thing is I dont have 140 bucks right now.
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Old 09-29-2005, 05:07 AM
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Arrow Re: Need p72 or Chipped P28 for troubleshooting

Any body local have an OBD1 Chipped P28 ECU I can try in my car.......
any body?

Call me or send me your number.

Russ,
(757) 672-2953
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Old 10-01-2005, 01:17 PM
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Default Re: Need p72 or Chipped P28 for troubleshooting

Some in in Hampton Roads has to have an OBD1 chipped P28.

any body
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Old 10-02-2005, 09:31 AM
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Default Re: Need p72 or Chipped P28 for troubleshooting

My buddy has a chipped P28, in Virginia Beach. Where are you located? Here's his number 650-8709 and his name is Levi. He would probably let you do it.
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