Strange Engine Noise.. need some help diagnosing
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Strange Engine Noise.. need some help diagnosing
Edit: Mitsubishi has said that this noise is in fact normal. Text below kept for reference.
I realize flashing the ECU carried this risk, I just need advice on what to do next. Car is 100% stock apart from Boost Pill upgrade / ECU flash.
As soon as I had bought my Tactrix cable, I flashed my USDM 2011 Ralliart using the 2011 USDM/CADM - 91 oct - StockPill - v2.5 Map Rom found here:
https://www.evolutionm.net/forums/09...t-basemap.html
Car was running great, could feel boost in performance & there was even a slight increase in MPG due to the tune to 91 octane (93 isn't available in SoCal).
Then a few weeks later I bought the GST Boost Pill: http://www.gstmotorsports.com/store/...oducts_id=1050
Installed it and flashed using the 2011 USDM/CADM - 91 oct - Boost Pill Upgrade - v2.5 Map Rom found at the same EvoM forum link above.
Before driving out, I checked to see everything started OK, but noticed that the engine was making noises I didn't remember it had before:
http://www.youtube.com/watch?v=nhg_5BV1Ko4
The car ran OK, though. MPG was consistant, there was further increase in performance, so I thought nothing of it.
I had to get an interior panel replaced today, so figured I'd have them see if that engine noise was normal while they were at it.
The South Coast Mitsubishi dealer mechanic says that it's not normal, and now they need to contact Mitsubishi tomorrow to get the warranty authorization to look into it further.
They want to keep the car overnight, but I'm thinking it would be a better idea for me to take the car, put the stock pill back in, reflash to stock, and then drop it off again tomorrow so I don't get my warranty voided.
Something tells me they would still be able to notice that the ECU has been flashed, though. But they may also not care that I modded my car in the first place as South Coast Mitsubishi has been known to sell extremely modified cars before. Would I be able to ask them about their policy on this without them instantly voiding my warranty? Is anyone familier with South Coast Mitsubishi and modding?
As far as I know, there is no error on my end flashing the ECU using the maps GST provided (was careful to download correct map, flash correctly, etc).
Any suggestions on what I should do would be greatly appreciated! Do not want to have to pay out of pocket for engine repair if I don't have to.
Last edited by AMT; May 10, 2011 at 02:51 PM.
#2
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That sounds very strange there mate, however i dont think it would of been GSTs tune that would of caused it. There are many people that are running Bryans tune without any issues.
Well keep us updated on the progress.
Well keep us updated on the progress.
#4
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Car was running great, could feel boost in performance & there was even a slight increase in MPG due to the tune to 91 octane (93 isn't available in SoCal).
Then a few weeks later I bought the GST Boost Pill: http://www.gstmotorsports.com/store/...oducts_id=1050
Installed it and flashed using the 2011 USDM/CADM - 91 oct - Boost Pill Upgrade - v2.5 Map Rom found at the same EvoM forum link above.
Before driving out, I checked to see everything started OK, but noticed that the engine was making noises I didn't remember it had before:
#7
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i installed mine perfectly. his noise is much louder than mine though...mine is faint. I actually took it to the dealer and they said its normal (this was a long time ago). Again..mine isnt as prominent as his rattle noise. Did you take off your engine cover? maybe that is rattling around on the top a bit?
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It was most likely making it before I installed the boost pill, but I only noticed it the first time I started up the car after installing the Boost Pill / Boost Pill ROM. It's highly unlikely this noise was caused by the Boost Pill / Boost Pill ROM (unless it caused that much damage in the few seconds it took to walk from drivers seat to the engine).
Last edited by AMT; May 9, 2011 at 05:18 PM.
#9
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IDK, something seems weird about that. I'd guess either something is loose or that's rod knock but the car shouldn't have any knock with it being so new. That sound is annoying me though b/c I really don't think it's related to the basemap but I can't put my finger on what it is.
Like chi-town said, double check everything. I'd even put the stock pill in and reflash to stock to see if that fixes the sound, and if it doesn't, that furthers my thoughts on the theory something has got to be loose in your engine compartment.
Like chi-town said, double check everything. I'd even put the stock pill in and reflash to stock to see if that fixes the sound, and if it doesn't, that furthers my thoughts on the theory something has got to be loose in your engine compartment.
#10
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It was most likely making it before I installed the boost pill, but I only noticed it the first time I started up the car after installing the boost pill / Boost Pill reflash. It's highly unlikely this noise was caused by the Boost Pill / Boost Pill flash (unless it caused that much damage in the few seconds it took to walk from drivers seat to the engine).
Also, does that noise get less/go away if you put the car in drive and let it move on it's own accord (no throttle by you).
#11
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I'm pretty sure they will still be able to see the ECU was flashed (stock or otherwise). Anyone know for sure? If they
It was most likely making it before I installed the boost pill, but I only noticed it the first time I started up the car after installing the boost pill / Boost Pill reflash. It's highly unlikely this noise was caused by the Boost Pill / Boost Pill flash (unless it caused that much damage in the few seconds it took to walk from drivers seat to the engine).
It was most likely making it before I installed the boost pill, but I only noticed it the first time I started up the car after installing the boost pill / Boost Pill reflash. It's highly unlikely this noise was caused by the Boost Pill / Boost Pill flash (unless it caused that much damage in the few seconds it took to walk from drivers seat to the engine).
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And I figured they'd be able to notice. The only reason they haven't asked Mitsu Corporate for warranty repair today is because they were closed. I would think they may have already checked for obvious things that would void warranty like ECU flash. I may be in the clear on this one.
i installed mine perfectly. his noise is much louder than mine though...mine is faint. I actually took it to the dealer and they said its normal (this was a long time ago). Again..mine isnt as prominent as his rattle noise. Did you take off your engine cover? maybe that is rattling around on the top a bit?
I can't check to see if noise goes away in that condition as the car is at the dealer, but I can tell you the noise frequency increases when engine is revved.
IDK, something seems weird about that. I'd guess either something is loose or that's rod knock but the car shouldn't have any knock with it being so new. That sound is annoying me though b/c I really don't think it's related to the basemap but I can't put my finger on what it is.
Like chi-town said, double check everything. I'd even put the stock pill in and reflash to stock to see if that fixes the sound, and if it doesn't, that furthers my thoughts on the theory something has got to be loose in your engine compartment.
Like chi-town said, double check everything. I'd even put the stock pill in and reflash to stock to see if that fixes the sound, and if it doesn't, that furthers my thoughts on the theory something has got to be loose in your engine compartment.
To reiterate:
I don't think this is an issue with Boost Pill / Boost Pill map, I'm worried the GST Stock Pill map caused the damage as I was running that for about a month prior to upgrading to the Boost Pill / Boost Pill map.
Last edited by AMT; May 9, 2011 at 05:35 PM.
#13
#14
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Edit: In which case, the ECU would appear 100% as nature intended.
Rich