Originally Posted by dagle
do u know where u got the P5M from? and why not just get a OBD2 P13 from a 96'
wow my reply got axed
your post led to to research more, and it appears you are spot on
ECU Types and Numbers
P13 : 93-95 OBD-1 Prelude VTEC
P13 : 1996 OBD-2 Prelude VTEC
P14 : 93-95 OBD-1 Prelude Si non-VTEC
P14 : 1996 OBD-2 Prelude Si non-VTEC
P5M: 97-01 OBD-2 Prelude Base
P5P: 97-01 OBD-2 Type-SH
P5P : 97-01 OBD-2 Prelude Type-S (JDM)
There is a P13 1996 OBD2, I assume its pre-immobilizer also, which would do the job good. Unfortunately, from what I have heard these are extremely rare ECU's to come by. I'm not sure how good my luck will be with that. So, it appears from my options I can do the following
1) get the 1996 P13 OBD2 ECU, no immobilizer
2) get the mobilizer override chip and solder it in
3) maybe somehow modify an OBD2 P72, however if I am getting it reffed, I'm not sure how much they inspect the ECU as to if it matched up exactly. I know having conversions is a no-no 2->1, but maybe and OBD2 P72 woudn't catch anyones attentino
4) ... talk to my local ref station, and get some more info on options I have with my situation. See how nice or lenient they will be if I am making lots of efforts
my other option was to get it passed as smog as a 1996 civic ... I've heard an H22 can
pass emissions on a civic if you put some special CAT on right before the test, like a long truck cat (not sure how that would fit on though). This would require some more tweaking with the cat, and doesn't even guarantee a pass.
I'm kind of steering away from illegal smog, 1) I dont know anyone 2) seems kinda expensive for something shady which might be a rip off, or if a cop pulls me over I might get asked for ref anyways.
Anyways! good tips on the immobilizer, and 96 P13 OBD2 (the phantom ECU! =]) I'd love to get one of those so ill check some classified online now ...
btw: The P5M i just got, was from craigslist, which I got shipped cross country for $100. It arrived today, I happily unplugged my OBD2->1 harness, plugged this in, then it didn't start ... didn't even think of the immobilizer beforehand. I guess aftermarket ECU market its pretty dead then post 1997, considering the cost to rekey/code the ECU is gunna run a few hundred at least, and probably has to be done at the dealer.