H22A with jun chip, idle problem - Honda Prelude Forum

h22aluder · 02-10-2011, 09:08 AM

So I have a h22a motor with a obd1 p13 ecu chipped with a jun chip. cars idle jumps around about 500rpms. Runs fine with usdm ecu. (2001 prelude)

so have any of you guys had any expericence with chipped ecu's and this problem? What would you recommned? I read some stuff online and would like a 2nd opinion from you guys, so whats up...

petern101 · 02-10-2011, 11:53 AM

More than likely you have a fake jun chip. They are all over ebay. If It was real you probably wouldnt have this problem. I would get a stock ecu and buy a real ecu that can be tuned.

rayslude · 02-10-2011, 03:53 PM

other than the fact you cant 'chip' a p13...

do yourself a favor and remove this 'jun' chip

h22aluder · 02-10-2011, 04:38 PM

What do you mean by I can't 'chip" a p13 ecu. i saw someone else say that in a search. technically i guess you can chip it but are you saying it just wont work right so you can't....

is removing the chip as simple as un-sodering the chip and removing it?

minilogoguy18 · 02-10-2011, 06:15 PM

Just put your original ECU back.

h22aluder · 02-10-2011, 07:02 PM

why would I want to do that. The P13 ecu is the original ecu for the H22a. Why would I want to run the usdm one, when I have both.

Regardless It would run better with the P13 ecu and I'm also considering going with a hondata engine managment system and maybe FI, but who know thats one hell of a price tag and tons of homework.

Either way the car would definitely perform better with the p13 and thats the name of the game.

minilogoguy18 · 02-10-2011, 09:53 PM

Yeah but why would you want to run an obviously bogus ecu that doesn't even run the car right?

4bangincivic · 02-10-2011, 11:13 PM

You probably need a tune...

rayslude · 02-11-2011, 03:47 AM

The only ecu's you can chip are p28 and p72. seriously, throw an unmolested p13 into your car and take out the 'jun' ecu.

You know whats more costly than hondata? Replacing your motor...

h22aluder · 02-11-2011, 09:40 AM

yeah thats what I was thinking after hearing about all these boot leg jun chips n ****. well can't i just unsoder the chip. I mean are there any hoops and **** that i got to jump through.

it's funny caz my friend who was helping kept insisting that i unplug the map sensor. I told him that it was stupid and don't do it. hard head does it and is like see the idle is smoother. i'm like i don't give a ****. you can't run a motor without its sensors, let alone a MAP sensor. ****ing guy.

it makes no sense at all. thats why I had to keep yelling at him.....lol seriluosly.some people get stuck on something and can't get off it, whatever

so what i'm gonna do is find more info on pulling the chip, I'm pretty sure all you have to do is pull the chip, correct me if I'm wrong. and just run the p13, i just did smog for dmv and am good for now. if i need smog just swap comps put some mileage on and get it smogged.

if i'm missing anything here let me know, thanks,

h22aluder · 02-11-2011, 09:46 AM

Quote:

Originally Posted by rayslude

The only ecu's you can chip are p28 and p72. seriously, throw an unmolested p13 into your car and take out the 'jun' ecu.

You know whats more costly than hondata? Replacing your motor...

hey, ray what do you think if i just pulled the 'jun' chip from my ecu and ran it like that?

h22aluder · 02-11-2011, 10:09 AM

well after thinking about it a little more, i think i'm gonna take it to hondata after a fer months.

I'm still breaking in my new motor. only has about 500 miles on it. JDM H22A. Already ordered the body kit for it. just got to install it myself. its all from duraflex. so i got new front and rear bumpers, side skirts, front fenders and wing. installing all by myself with the execption of my hommie.

so i figure i do this install, probabbly take 2 weeks or so, caz i'm in not rush and i work at least 52hrs a week. so i work on my car with spare time.

after all that, and the motor has been broken in some more, i'll let hondata take care of the tunning and the ecu.

its only $295 for the s200 engine management system, and it comes with a handful of goodies.

$300 bucks, not to bad, either way, it's like I'm married to this car.........till the bitter end.

if you guys got input let me know.,...

rayslude · 02-12-2011, 10:08 PM

you still need a p28 or p72 to use hondata.

what all is done to the car. its nice to se someone talk about tuning, most guys in the FI forum dont even consider it when going turbo, etc.

also, please dont install a body kit. wings west lip kits are the ONLY way to go for the prelude.

good luck with the car...

h22aluder · 02-13-2011, 10:59 AM

damn, your right. before p13 was listed as an ecu you could use. now its not. damn, i gotta sell this ecu now, great...!

side note, would a p72 or p28 run h22a without being tuned. does it run good,better or worse than the usdm. anyone running one of these ecu's

minilogoguy18 · 02-13-2011, 11:03 AM

Neither of those ECU's will run the car right in their stock form, they're for 1.6 and 1.8L engines.