My 2006 evo 9 is having some F***ed up issues. I have the standard bolt-ons... exhaust, intake, etc, etc, stock turbo and ecu. Tuned with ecuflash by "Jack" at Horsepower Logic in Fl. Has been running great but started having some wierd problems a couple of months back. Never threw any engine codes so I let it go, (stupid on my part I know). The A/F ratios would (at idle) go lean (up to 17.8) then go directly rich (down to 10.6 sometimes). This would happen periodically. Now all of the sudden its happening more often, staying lean mostly. Throwing codes, stalling at idle, ruff running, hesitation. Found a boost leak and fixed it. car now runs. still hesitates and throws codes. Will not start and stay idleing without tapping the gas several times. Idle then goes up to around 1200 rpms to stay running and A/F is about 15.8 . Codes indicate= barometric pressure sensor, knock sensor, fuel pump relay, vehicle speed sensor, egr sensor and injector harness. car only keeps correct A/F ratio when driving. Readings were taken with evoscan, tactrix 2.0 and with car running. Found previous post stating to take readings with car off ignition on, but I have already cleared codes. .... ANY HELP WOULD BE APPRECIATED!!!

 

take it to awdmotorsports. theyll take good care of you!

 

Any other suggestions? ... Im trying not to have to drive all accross the state to get a "fix" answer. Im extremely capable of fixing the problem with my own hands... Just need help with the diagnosis.

 

I'd suggest you have a big harness plug with lots of wires pulled apart somewhere.

 

I'd start with:

1. fuel pump relay
2. injector harness
3. barometric pressure sensor
4. egr sensor

 

I'm posting on here to try to get some REAL help for my car issues... I've read alot of posts on here from people who Help others... Guess there are NONE online today!!! Thanks... guess I'll just spend the $ and take it to Mitsubishi... you guys rock... (sarcasm)

 

Were in Florida are you located?

 

North Port, Just south of Sarasota... Where you at?

 

Yep, that's the way to ask for help bud. [unsubscribed]

 

Take it back to the person who tuned your car or at least talk to him about this; if you've fixed all your boost leaks it definitely sounds like a tuning issue to me. Have you made any changes to the car since it was last tuned? Also, don't expect to get many good answers from people if you're going to be a dick about it. People aren't obligated to help you just because you're stumped and ask for help. Most of us are on this board for entertainment and recreation and answer questions when we're able IF we feel like it.

 

I haven't had any problems with the tune, and haven't done anything since the tune. Seems to me like possibly an ecu problem of some sort (maybe, not certain). Just wanted some help with the whole thing. I know a lot of people on here have already done alot of trial and error etc. and posted for a reasonable response.
I am not trying to be a "DICK" about the whole thing. However, I am serious about my car as well as its my only means of transportation. I wasn't posting a "hey mock my issues" thread. I'm trying to figure out my car so I can get to work and back.
And the responses I get are these?

"I'd suggest you have a big harness plug with lots of wires pulled apart somewhere."

"I'd start with:

1. fuel pump relay
2. injector harness
3. barometric pressure sensor
4. egr sensor "

And I'm being a dick? Come-on... Im just looking for some help...

 

My actual job is residential air conditioning and I periodically help people on line when I get the chance. If someone was in Florida and it was 95 degrees in their house and my response to them was " sounds like you need it colder" as my "help" to them would that sound like a reasonable response? If I can help, and I know a possible answer, I help out... But that's probably just me... Thought I would get the same response in here... I apologize if I have offended anyone.... Have already spent several hundred dollars on "sensors" this weekend with no resolve. Running low on funds getting frustrated, and looking for help...

 

Specifically, what brand of exhaust manifold are you running? Is it tubular or cast?

People do want to help! So, have patience. Just give us a chance and some more detailed info....please.

 

sounds like a tuning issue.....how is the startup if I may ask?......

 

Im running a tubular stainless manifold... megan tp be exact... And the start up is good. fires right up, after about 5 seconds the idle drops, and the car stalls without tapping the gas pedal. Car has been tuned for about 10 months now... Stalling and running issue started Friday.