vtec swap question
07-03-2009, 04:21 AM
#11
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Re: vtec swap question
So you have the P30 that the swap came with? If you have the ECU, and you have the engine with the knock sensor, just run the wires for the knock sensor. If you don't want the knock sensor, you could either get the P30 chipped with a disabled knock sensor program, or get your stock P28 chipped with a disabled knock sensor P30 program. The P28 and P30 are the exact same ECU but the P28 lacks the knock sensor daughterboard inside. The only other difference is what they are programmed for from the factory. That's why you could use either ECU with the same program if you don't want to use the knock sensor.
Given the choice of which ECU to use if you're not going to use the knock sensor, I'd chip the P28 and sell the P30. The P30 is worth more because of the knock sensor board.
Given the choice of which ECU to use if you're not going to use the knock sensor, I'd chip the P28 and sell the P30. The P30 is worth more because of the knock sensor board.
i just went out and checked, it has no stickers on it any more, just writing in japanese and PR3 on it.
PR3: 89-91 JDM B16A EF8/9
http://www.honda-tech.com/showthread.php?t=810101
07-03-2009, 10:13 AM
#12
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Re: vtec swap question
Not to confuse you, but there are ODB1 PR3s also, and that is probably what you have.. The OBD1 PR3 is (if I remember) functionally the exact same ECU as the P30. It's very easy to identify based on the connectors though, the OBD1 ECUs will have 3 gray connectors on them. I'm assuming that you have an OBD1 ECU.
07-03-2009, 11:22 AM
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Re: vtec swap question
yea theres no adapter harness or anything im sure its obd1.
so i could run either ecu
pr3- wouldnt have to run knock sensor wire
p30- i would have to run it
so i could run either ecu
pr3- wouldnt have to run knock sensor wire
p30- i would have to run it
07-03-2009, 11:26 AM
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Re: vtec swap question
ODB1 PR3 has a knock sensor board I'm pretty sure, same as P30. It's easy to check if you want, you can remove the ECU cover and there should be two green circuit boards in there, the smaller one about 1/3 or 1/4 the size of the mainboard is the knock sensor board.
07-03-2009, 11:41 AM
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Re: vtec swap question
so i might as well because im not looking for the car to be fast i just want to hit vtec from time to time, plus idk what the pr3's rev limiter is set at because i have never tried to hit it in the sohc and i dont want to either
07-03-2009, 01:18 PM
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