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Cali2MDevo8 · Jul 1, 2009, 08:18 PM

Hey guys,

I've been having this issue with my evo lately. The car threw a P0172 (system too rich) code. Oridinally fixed by CBRD which was a TB leak, well we thought it was fixed. The IM was replaced with a BR ported stocker and the TB replaced with a Mil spec 65mm unit. The code didn't come back and CBRD did a new tune for the car.

I picked up the car and the next day, the code returned. The car was taken back to CBRD about a week later and has been there for about a month now. No matter what we do to the car, the ecu changes the fuel trims. From what Chad was telling me, the only time it doesn't is at WOT.

Things we have changed with no luck:

02 sensors
MAF sensor
BOV
injectors
walbro fuel pump
battery
changed the TB to a stocker
compression 170-175 accross all cylinders
changed all the solenoids on the IM
retuned
temperature sensors checked.
Fuel pressure regulator, evap sole and check valve, throttle body, idle stepper, EGR, plug wires, MAF, bov, head gasket, pcv valve
ECU swapped out

It's obvious I can't tune cars, sorry if my lingo isn't correct

I'm sure there are other things that Chad and Mark have done, but we are kind of stuck at this point.

I was wondering if anyone has had this issue with the stock ECU changing the fuel no matter what?

Any help would be great.

Thanks

Jason H.

Jul 1, 2009, 08:18 PM	#1
Cali2MDevo8 Evolved Member Personal Sales Rating: (22) Join Date: Sep 2005 Location: MD/PA line Posts: 2,325 Drives: BBK powered EVO 8	Need Help Hey guys, I've been having this issue with my evo lately. The car threw a P0172 (system too rich) code. Oridinally fixed by CBRD which was a TB leak, well we thought it was fixed. The IM was replaced with a BR ported stocker and the TB replaced with a Mil spec 65mm unit. The code didn't come back and CBRD did a new tune for the car. I picked up the car and the next day, the code returned. The car was taken back to CBRD about a week later and has been there for about a month now. No matter what we do to the car, the ecu changes the fuel trims. From what Chad was telling me, the only time it doesn't is at WOT. Things we have changed with no luck: 02 sensors MAF sensor BOV injectors walbro fuel pump battery changed the TB to a stocker compression 170-175 accross all cylinders changed all the solenoids on the IM retuned temperature sensors checked. Fuel pressure regulator, evap sole and check valve, throttle body, idle stepper, EGR, plug wires, MAF, bov, head gasket, pcv valve ECU swapped out It's obvious I can't tune cars, sorry if my lingo isn't correct I'm sure there are other things that Chad and Mark have done, but we are kind of stuck at this point. I was wondering if anyone has had this issue with the stock ECU changing the fuel no matter what? Any help would be great. Thanks Jason H. __________________ XBOX LIVE: PAgamer07 PSN: PA-gamer HUGE partout: http://forums.evolutionm.net/sale-pa...ket-parts.html Last edited by Cali2MDevo8; Aug 3, 2009 at 09:28 AM.
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