Gompers

Ok, I recently installed a 2.5in downpipe back.

After a few weeks of driving, I notice when I get on the gas (floor it) I lunge forward (like normal) get speed a bit, then it boggs down and the exhaust putters until I let off the gas a bit.

It boggs down randomly, between almost any RPM.

I've got a CEL (will check soon) but have had it even before the bogging started (may have changed, who knows?)

VTEC still hits, so I think its my IACV (crazy rev idle at stop)

I am running a JDM H22a, with the Prelude ECU.

MODS: H22a, LSD H22 Tranny, Intake, 2.5 in Downpipe Back, No Cat (resonator only + muffler), Headers, No PS/AC. (all I can really think of ATM)


Lemme know if I can be more specific

JStab

its the vtec

sive ick

throttle position sensor?eacv is only for cold start,it may be your intake air temperature sensor?

B-Well

incorrect, the iacv controls the idle when the motor is warm. the fitv controls the idle when the motor is cold. i dont think the jdm h22 has a fitv. not 100%. pick up a fuel press reg and tune the air/fuel a little.

Gompers

I've got both an IACV and a FITV. Basically the same exact setup on the accord.


The problem seemed to manifest itself post-exhaust installation.
(then again, I have seem a hell of alot of coincidences)

It seems like it smells a little rich when I bogg (managed to bogg down in the parking lot)

Once again, it is VERY random.
It Will happen when I go WOT maybe 5% of the time.

But when it does, I surely notice ;p


Im on a stock ECU, so any walkthrough would be nice to get ;p

OBD1, p13? (w/e the stock JDM Lude was)

CTR

check the code, probably a bad sensor messing up your timing. check the code for free at autozone or advance auto parts.

Jarrod

Or get tuned...

Gompers

The only CEL is my EGR valve (code: 12) and it has been plated off for a while.

Gompers

what would the tune do for me?

Alot of people threw a variety of issues, would that tune pretty much fix em all at once?

Gompers

Anyone else? ;p