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ECU flash and reliability?

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Old 07-16-2011, 02:20 AM
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Guybrush Wilkinson
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Default ECU flash and reliability?

Is there a difference reliability-wise between different flashes if the car is 100% stock? I would like to have mine flashed but I am afraid flashing might lead to issues with the car. Searching the forum some MAF problems may follow. Anything else to expect?
Old 07-16-2011, 03:01 AM
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DaveK
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I'd not heard of MAF problems with flashes. I thought MAF problems usually followed exhaust changes (100 cell cats etc.) or air filter changes.

Mine was flashed 3 or 4 months ago, including new DVs and the filter was changed (but only for another panel filter). I've certainly had no problems with warning lights, and would be taking the car back if I did. The guys that did mine took time to take logs on plenty of times afterwards and make sure it had the right mixture.

In fact - from my research when I had mine done - I think that's the think you need to take care of. It's important that the map is right, and you're not running too lean. It's easy for tuners to go for maximum bang to the buck and come up with a map which will make you smile, but may mean your engine is running dangerously lean.

Not sure about Finland, but in the UK there are a few recognised specialists for this kind of thing. Although my map actually came from the States anyway (Promotive).
Old 07-16-2011, 03:18 AM
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doubleurx
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I think that the factory tune is too lean. My car runs much better with the flash (EPL) since it was tuned a year ago.
Old 07-16-2011, 03:25 AM
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Guybrush Wilkinson
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There are plenty of shops here that flash ECUs but I think what they do is just transferring software made somewhere else. I think that is ok if you have a Volkswagen Golf but I cannot trust my TT in the hands of such shops. There is only one here that I know that individually tune the software according to clients wishes. They also save a copy of the original in case customer wants the original software returned.

http://www.hestec.fi/etusivu/porsche/porsche.php
Old 07-16-2011, 03:37 AM
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doubleurx
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Try talking directly with some tuners - such as Kevin or Epl. They can remotely tune your car specific to your needs - not necessarily an OTS map.
Old 07-16-2011, 04:10 AM
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DaveK
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Originally Posted by doubleurx
Try talking directly with some tuners - such as Kevin or Epl. They can remotely tune your car specific to your needs - not necessarily an OTS map.
This is what happened with mine. The local specialist doing the work used Durametric to log how the car is running with / without the map, and adjustments can be made by the remote tuner based on those logs.
Old 07-16-2011, 11:02 AM
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Quadcammer
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Originally Posted by doubleurx
I think that the factory tune is too lean. My car runs much better with the flash (EPL) since it was tuned a year ago.
lol, and what evidence do you have that the factory tune is too lean?
Old 07-16-2011, 02:34 PM
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doubleurx
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Originally Posted by Quadcammer
lol, and what evidence do you have that the factory tune is too lean?
Almost all factory tunes are lean for emissions. I don't think there is a tuner out there that will say they are too rich?
Old 07-17-2011, 01:45 AM
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Guybrush Wilkinson
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Flash will not effect on reliability when properly done?
Old 07-17-2011, 02:08 PM
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ltc
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Contact RL member and expert forum contributor "Kevin".
Do exactly what he recommends.
Old 07-17-2011, 08:51 PM
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Quadcammer
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Originally Posted by doubleurx
Almost all factory tunes are lean for emissions. I don't think there is a tuner out there that will say they are too rich?
uh, emissions are gauged at part throttle, at which point you want the tune to be lean.

at full throttle, the factory tune is plenty rich.
Old 07-18-2011, 12:29 AM
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larry47us
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When I bought my TT, I found that the PO had purchased a Flash for the ECU. He bought his from Softronic Tuning. Read the FAQ on their website. That should answer most of your questions. Other than that, you can call them, if you want. They were really ready to answer my questions, even though I didn't buy it from them.

My car runs like a ROCKET. I couldn't be happier.

larry
Old 07-18-2011, 12:47 AM
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Dock
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Originally Posted by Guybrush Wilkinson
Flash will not effect on reliability when properly done?
It depends on how you drive the car.
Old 07-18-2011, 02:25 AM
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doubleurx
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Originally Posted by Quadcammer
uh, emissions are gauged at part throttle, at which point you want the tune to be lean.

at full throttle, the factory tune is plenty rich.
Go do some research on recorded AFR's both stock and tuned and get back without the rhetoric of superiority.
Old 07-18-2011, 02:26 AM
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doubleurx
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Originally Posted by Dock
It depends on how you drive the car.
That can be said for stock as well.


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