ECU Flashing

[CrazyCaker]

I was wondering if I should get my ECU flashed since I have done some upgrades. Does the dealer charge for this, or is it possible to have them do it when I take it in for an oil change? I have heard that once the ECU is flashed you tend to get better performance from mods, is this true?

[Naveed74]

what you want to do is reset your ECU. This involves disconnecting your ground on your battery and tapping your brakes. After that you are good to go.

Re-flash is for the MSP that have hestiation issues and there is one for 2002 P5s for cold rattle startup.

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[CrazyCaker]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Naveed74 @ Mar. 06 2004,7:44)</td></tr><tr><td id="QUOTE">Re-flash is for the MSP that have hestiation issues and there is one for 2002 P5s for cold rattle startup.  

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Ah... So I do want this then! I have an 02 and it rattles like hell when it's cold.

[Naveed74]

Me too. I made an appointment today at DWM to do the oil change and stuff in a few weeks. I am going to ask them to do that when I am there...

It should only take a couple of minutes, I hope.

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[CrazyCaker]

Let me know how it goes. I don't need another oil change for like 3000km still, so maybe I'll wait till then.

[P5dude]

what about the 03 P5? do they need the flash? or just the disconnection of the battery is fine?
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[Naveed74]

I think the 03's have the cold start flash.

If you want to reset your ECU, just disconnect the negative terminal on the battery and pump your brakes a few times.



I will let you know how I make out with the flash Joe

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[redfyre]

Joe, the flash can be done at the dealers at no cost. It's under warranty. Although it is to fix the cold weather rattle, you will not notice much of a difference with the flash. I had mine done last year and there was barely a difference. But it's free and I had it done one day when I took it in for an oil change.

[CrazyCaker]

Well, I got my ECU flashed on Sat. at Westowne Mazda. It seems like it did help the cold rattle issue. This morning when I started the car I checked for it, since it was cold, and it was barely noticeable. http://ib2.toprotege.com/iB_html/non-cgi/emoticons/thumbs-up.gif