P14 + v-afc... options? - Honda Prelude Forum

puffxy · 08-15-2003, 09:57 PM

If anyones been paying attention to my other thread, i either..

1) have a busted p13, or
2) i have no f!@#ing idea wuts wrong with my car..

the "happenings":

after the jdm swap i got an engine light, signalling somethings up with the o2 sensor.. got a tune up (spark plugs/wires/fuel filter/cap and rotor).. still threw a CEL, changed the o2 sensor, no change. Being almost completely out of hope i decided to throw in my p14 ecu and see if it would still throw the CEL, to my surprize, there was no light, no bobbing, nothing! um.. i've come to the conclusion that it's the ECU o.O

my "options":
have the peeps give up a new jdm ecu.. BUT, i've been told that the jdm ecu's are tuned for 100 octane, while here in cali the highest we have are 91.. that's one.

But the car feels so much better with my p14, just lacking vtec =\
Another option i was given was to hook a v-afc to my p14 and have vtec initiated from there.

This seems like the best option to *me*, any thoughts? thx

Zimmlude · 08-16-2003, 02:09 AM

Problem with that is that your redline will be around 6700 rpm as that is what is in the P14 ecu.

I would either find/get another JDM P13 or look for a USDM P13.

Good luck

puffxy · 08-16-2003, 03:49 AM

oh crap, didn't think about that..

i've been reading about running the gsr ecu's on our ludes, but getting them chipped to run withour fuel/air ratios? how does that work?

puffxy · 08-16-2003, 11:38 AM

ok, this has probably gotta be the dumbest question ever asked, cuz i'm just thinkin outta my ass here... but what if i used both ecus, p13 and p14, plugged which everone has the vtec wire into the p13 and the others into p14 o.O prolly won't work, but like i said i'm thinkin outta my ass....

prelude2005 · 08-16-2003, 12:00 PM

yeah lol wouldn't work, the ecu wouldn't be wired completely.

jgcpn33 · 08-16-2003, 12:15 PM

let me guess......you have a bad hesitation problem with your p13 computer in?
if thats right i did too, and mine ran great with the h23(p14) ecu in.....
theres a million things that cause the hesitation mine first was injectors and it finally ran good on the p13 and wouldnt bog down, idle bad, hesitate and so on....then a few months later it came back but not as bad.......
i just replaced the knock sensor and it seems to be running fine.......

but anyways,dont go out and jsut buy another p13 cause I did and was out 275 cause it did the same thing my other p13 did........

jonathan

jgcpn33 · 08-16-2003, 12:19 PM

oh and my take on why it runs good with the p14 is, IF its a fuel related problem, cause at first i thought my injectors were clogged, is the p14 computer i THINK was giving more fuel to the h22 injectors which are bigger than the h23 injectors cause it doesnt know the difference.......

i dont know if how i put it made sense but thats just a what i would guess

puffxy · 08-16-2003, 01:19 PM

did u get a CEL with the p13 in?

puffxy · 08-16-2003, 02:21 PM

is there a way to check if the injectors are bad?

jgcpn33 · 08-16-2003, 04:12 PM

i would get a CEL once in a while for a few different things....but they'd go away quick .......

about the injectors, i'm not positive how to tell if they are bad.......
i know you can send them to a place called rc engineering or something and they will clean them and flow test them to tell you if they were clogged......other than that i'm not sure......

Theres a huge hesitation thread about all different solutions that solved peoples hesiation and what didnt.....lots of people have it, but not many had it like i did where i couldnt even drive with the p13 computer in.......it would do crazy stuff.......

puffxy · 08-17-2003, 03:21 AM

i have a consistant o2 sensor CEL that wont go away with the p13 in... would injectors set the o2 off?

puffxy · 08-17-2003, 03:42 PM

would you recommend i stick with bobbing and hesitation and use the p13, or would it be safe to use the p14?

jgcpn33 · 08-17-2003, 07:43 PM

yeah one of the codes i got was for the o2 sensor......
no its fine to use the p14....i did for about 6 months......

well i would suggest to you to try something with the injectors or knock sensor, cause yours seems really similar to my problem, but i dont want me to give you bad advice......

umm.....if you can get your hands on some injectors to test out that'd be great....or a knock sensor to test out also.......

those were the two things that solved mine at different times, but i dont wanna tell you to just go out and buy them........