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Old 02-16-2012, 01:44 PM
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Default 2011 ralliart

changed the exhaust from front to back including the down pipe and cat to a 3 inch on my 2011 ralliart,engine light came on,runs super rich,backfiring,at over 100km/h it cuts out to a stumble in the rpm and the accelarator doesn't work,have to pull over and restart the car for it to run properly,says transmission requires service,mitsubishi blames the exhaust,why is the exhaust throwing the car off so much and how can I fix this,caper6

Last edited by caper6; 02-18-2012 at 08:44 PM.
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Old 02-16-2012, 01:59 PM
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Ok, first off are you tuned?

Secondly, you have a full exhaust system including a new downpipe and either a test pipe or high flow cat?

If you're running on the stock ROM, you can't run anything more than a catback exhaust and a drop in filter without having issues. If you're running a full turboback system, you need a tune, period.

List out ALL of the mods you have and what tune, if you have one.
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Old 02-16-2012, 02:03 PM
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Can we get some more information about what has been done to the car?

-NFSLancerRA, who suspects that the exhaust is just the tip of the iceberg.
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Old 02-16-2012, 02:27 PM
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You don't need to post the same thing multiple times. We're a close community and can answer almost immediately.

See your other thread since it's already been posted on.
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Old 02-16-2012, 02:37 PM
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Ok, now tell us when it started happening and what led up to it.
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Old 02-16-2012, 02:46 PM
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Thread merged.

Ok Caper6, list all your issues in this thread.
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Old 02-16-2012, 02:51 PM
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Tuner didnt do a good job of tuning with your custom setup.

Find a tuner that know more about TC-SST then your current tuner.

You cant reset ECU after mod like that & expect ECU+TCU to play nice with each other.
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Old 02-16-2012, 02:54 PM
Insane11RA Insane11RA is offline
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Downpipe? That's the famous boost cut, I had no idea mitsu does that too. my STi had Cobb stage 2, what a piece of sh!t ! Even after Agile tuned it the damn boost cut kept coming back, take that POS Cobb out and flash using GST maps.
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Old 02-16-2012, 03:25 PM
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Did it look anything like this ?

http://youtu.be/Cu0F37iBlpU
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Old 02-16-2012, 03:26 PM
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If i were you, I would go thru process of elimination.
Starting with the lastest thing you installed,
Going back towards Stock map/ Stock setup.

Sometimes people that are out to make money will claim anything/everything under the sun to get your money.

If all you have is exhaust system & stock intake, you might try Free GST flash.

What kind of BOV do you have? this can be contributing factor in losing boost. Most adjustable BOV need to be adjusted with the tune.
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