Evo X Fuel Return Pipe Recall
Evolved Member
Joined: Jun 2009
Posts: 653
Likes: 12
From: Houston, TX
Technical Service Bulletin. It's basically a behind the scenes announcement from the manufacturer to all of their dealerships. Perhaps some number of cars experience a problem that isn't serious enough to do a recall for for, but enough that it will give advice to the dealerships to fix it when they come across the symptoms.
Thread Starter
Evolving Member
Joined: May 2009
Posts: 153
Likes: 0
From: Davie, Florida
I to just had the recall done today. I asked if it was a problem If I had mods and they said NO. All stealerships are different but unless your going in for a problem with your car and it could be caused by a mod there is no issue. Even if you replaced your motor but are using the stock fuel rail and hardware (not that anyone would) they would have to replace it for you free of charge due to the liability. Obviously I was being facetious but you get the just of what I'm saying. Anyone with mods is good to go!!!!!!!!
yo what dealership did you go to, i live like half an hour south of you.
Evolved Member
Joined: Feb 2008
Posts: 1,571
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From: Rhode Island
Just had my fuel return line replaced at dealership and all that was done was add another bracket for this piece of the line so now there are 4 instead of 3 support brackets; seems like it would have taken one hell of a "vibration" to get the original line to "crack" but what do I know. Also, had the fuel pump relay replaced ,also compliments of Mitsu; apparently there has been stalling problems associated with this relay and therefore the warranty replacement; they did not state/recognize that the relay has caused very lean (10.9) conditions @WOT due to its failure. Point here is, go and have the OEM (black) relay (ACV31212) replaced by the new OEM (green) relay (ACM32221) under warranty just to be safe.
Later, Ken
Later, Ken
Regarding the recall fix, it was about $560 worth of parts according to my invoice. I got the fix done yesterday in about 30minutes with no problems at Don Herring.
Evolved Member
Joined: Feb 2008
Posts: 1,571
Likes: 0
From: Rhode Island
10.9 is really rich still not lean. The failing relay does indeed cause wicked leaning out of the AFR but it's more like 14-16:1 @ WOT.
Regarding the recall fix, it was about $560 worth of parts according to my invoice. I got the fix done yesterday in about 30minutes with no problems at Don Herring.
Regarding the recall fix, it was about $560 worth of parts according to my invoice. I got the fix done yesterday in about 30minutes with no problems at Don Herring.
"I am writing this as a warning to those who own an Evo X. There has been a couple of threads on Evom about Evo Xs that are running lean on the stock tune at WOT. I have not encountered that until recently. I was baselining SpunkySandoval's Evo X for a tune and the car was running unusually lean ...
I have never seen such a lean AFR on the stock tune. The lean AFR and the advanced stock timing made the car register 10-14 counts of knock by redline. The owner and I surmised that this was a fuel related problem. The car was not getting the needed fuel during WOT operation."
I am not a tuner but it appears that both AFR and knock have to be considered when evaluating fuel adequacy at WOT.
Later, Ken
Also, had the fuel pump relay replaced ,also compliments of Mitsu; apparently there has been stalling problems associated with this relay and therefore the warranty replacement; they did not state/recognize that the relay has caused very lean (10.9) conditions @WOT due to its failure.
While it is true, 10.9 AFR does not seem very high, it did result in significant knock: This from Looney Tuning-
"I am writing this as a warning to those who own an Evo X. There has been a couple of threads on Evom about Evo Xs that are running lean on the stock tune at WOT. I have not encountered that until recently. I was baselining SpunkySandoval's Evo X for a tune and the car was running unusually lean ...
I have never seen such a lean AFR on the stock tune. The lean AFR and the advanced stock timing made the car register 10-14 counts of knock by redline. The owner and I surmised that this was a fuel related problem. The car was not getting the needed fuel during WOT operation."
I am not a tuner but it appears that both AFR and knock have to be considered when evaluating fuel adequacy at WOT.
Later, Ken
"I am writing this as a warning to those who own an Evo X. There has been a couple of threads on Evom about Evo Xs that are running lean on the stock tune at WOT. I have not encountered that until recently. I was baselining SpunkySandoval's Evo X for a tune and the car was running unusually lean ...
I have never seen such a lean AFR on the stock tune. The lean AFR and the advanced stock timing made the car register 10-14 counts of knock by redline. The owner and I surmised that this was a fuel related problem. The car was not getting the needed fuel during WOT operation."
I am not a tuner but it appears that both AFR and knock have to be considered when evaluating fuel adequacy at WOT.
Later, Ken