UnFlash your MSP

[bbrk753]

Well i work at a mazda dealer as an apprentice tech and one of the master techs and i were discussing that there is a way to un flash your pcm though it is kinda complex, but all you need to do is find someone with an unflashed msp get you hands on a mazda wds and copy the pcm from the unflashed msp then you load the old flash on a flashed msp and bam your good to go (2thumbs) let me know what you think on this idea

[jred321]

imho, not worth it. the flash didn't really do much

[WillisW555]

Yeah, easy if you can get your hands on the equipment to do the reflashing.

[jersey_emt]

You could swap PCM's with an unflashed MSP

[peepsalot]

If I remember correctly the flash only changed the timing, right? So unflashing would retard the timing, which might be good for those looking to up the boost a bit. For those with engine management, I guess this would not matter though.

[jred321]

it advanced the timing a little bit from what i remember. unflashing would retard timing that little bit, which i would think would only matter if you're actually pushing the limits. i'd personally upgrade my fuel system though if i were pushing any limits, which would negate this.

[peepsalot]

Well, it would still be nice for peeps like me that will soon be installing the DSM afc, which has no control over timing.

Is timing the only thing that the flash changed though?

[pdhaudio83]

you just need higher octane fuel at high boost levels to avoid the advanced timing consequences (detonation)

[BOOSTR]

Why would you want to? My MSP ran like shit unflashed. I do not miss the hesitation, stalling, or stumbling one bit. Currently running 39,400 miles without any problems. To each his own I guess, but I have had no problem running more boost than 6.9psi. I do use race gas for up to 14 psi of boost.

[peepsalot]

I know high octane reduces the risk of detonation, I always get premium. But I'm not gonna drive around with race gas all day either. There are plenty of factors that contribute to detonation, and timing is one of them. I'm just saying I think unflashing would be a nice added bit of safety.

[jred321]

you can also add in more fuel to help counter the detonation caused by advanced timing i believe. i'm certainly no expert on tuning though. our timing on the whole though isn't super aggressive, so it's not really a huge deal

[jred321]

Why would you want to? My MSP ran like shit unflashed. I do not miss the hesitation, stalling, or stumbling one bit. Currently running 39,400 miles without any problems. To each his own I guess, but I have had no problem running more boost than 6.9psi. I do use race gas for up to 14 psi of boost.mine runs the exact same after flash as before. craptastic

[BOOSTR]

Which just goes to show that there is a wide variance among all MSP. Mine runs great all day long.

[Dr.Sound]

i burned twice as much gas unflashed....
plus the car ran like shit in the summer.

[Spooled]

You want advanced timing in low / non-boosting rpm's to get the engine going, then back it off as boost builds. It's better to have the correct AFR first, then play with the timing. That's, arguably, the best way to get good clean power. Advancing the timing down low will give you faster spool, too!

The original tune was better for higher boosted applications, but it was sloppy. The updated maps are better for 95% of the MSP's, since people that are pushing high boost are overriding the maps with piggybacks/standalones anyway (if they do it right).

[BlkZoomZoom]

bbrk753- Yeah good luck on that. Been there, tried that. As soon as you disconnect the wds ours locked up. You'd have better luck calling tech. line and asking them for the as sent calibration. Of course they wouldn't give them (or didnt have them) to me, maybe you'll have better luck.

[Focus]

you just need higher octane fuel at high boost levels to avoid the advanced timing consequences (detonation)
You also need to retard timin at higher boost levels. More pressure = more heat. Kinda catch 22 on that one.

[Brian MP5T]

Flash was good for those who remained at stock PSI!

[wicked]

mines unflashed,and I plan on keeping it that way,mines also kinda far from stock.
anyone who plans on upping boost at all without engine manegement of some sort should remain unflashed,but for stock the flash is a very good thing.

[BlkZoomZoom]

I ran 13.4's for a long time on the "flashed" pcm.

[Spooled]

Then "boom"?

[Focus]

Then "boom"?
Not just boom, Ba Da Boom! :(

[mspdfreak]

Hey, it's not a bad idea, but as others have posted, mine runs just fine. Thanks for the idea, though.

[BlkZoomZoom]

Then I needed to go faster....thanks to Focus. lol

[LinuxRacr]

it advanced the timing a little bit from what i remember. unflashing would retard timing that little bit, which i would think would only matter if you're actually pushing the limits. i'd personally upgrade my fuel system though if i were pushing any limits, which would negate this. Then there's compression that fuel can't overcome. This is where ignition timing would be key.