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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > GIAC Stage 1 Flash with Map Switcher Impression



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      09-22-2010, 04:32 PM   #23
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Quote:
Originally Posted by techlogik View Post
I figured it was by design....I thank you for this feature.

It is something I almost immediately realized with the GIAC flash after stock tune...below 2K and really right at 1500rpm where I spend a lot of time is slow rolling traffic during rush hour, it is very responsive, and VERY smooth when you request to barely move and go on the throttle. Slight input to the throttle yields the appropriate amount of fuel and the car smoothly accelerates. The stock tune you are pushing on the gas wondering when the thing is going to start moving, then it lurches forward.

Good work!
+1 ... Do doubt.
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      09-29-2010, 12:08 AM   #24
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Quote:
Originally Posted by techlogik View Post
I figured it was by design....I thank you for this feature.

It is something I almost immediately realized with the GIAC flash after stock tune...below 2K and really right at 1500rpm where I spend a lot of time is slow rolling traffic during rush hour, it is very responsive, and VERY smooth when you request to barely move and go on the throttle. Slight input to the throttle yields the appropriate amount of fuel and the car smoothly accelerates. The stock tune you are pushing on the gas wondering when the thing is going to start moving, then it lurches forward.

Good work!
Really? Do you know which BMW software version you had prior to the GIAC flash? I see you've got a 2007 AT, so MSD80. So do I with software version 2.33.0, and my car is still pretty unresponsive from 1500 rpm's with light(er) throttle application. If I give it more throttle, the tranny kicks down a gear to bring the rpm's above 2k and then acceleration is good.
I waited a week for the tranny to adapt before posting, as rpm's in relation to speed and gear were funky (unstable) the first day or two. Austin said this had to do with the AT being reset after the flash. The rpm's seem normal again in relation to speed and gear, but my car is not any more responsive at 1500 rpm's and slower speeds than prior to the flash.
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      09-29-2010, 10:22 AM   #25
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Quote:
Originally Posted by cvc 22349a View Post
Really? Do you know which BMW software version you had prior to the GIAC flash? I see you've got a 2007 AT, so MSD80. So do I with software version 2.33.0, and my car is still pretty unresponsive from 1500 rpm's with light(er) throttle application. If I give it more throttle, the tranny kicks down a gear to bring the rpm's above 2k and then acceleration is good.
I waited a week for the tranny to adapt before posting, as rpm's in relation to speed and gear were funky (unstable) the first day or two. Austin said this had to do with the AT being reset after the flash. The rpm's seem normal again in relation to speed and gear, but my car is not any more responsive at 1500 rpm's and slower speeds than prior to the flash.
Forgot what version, maybe Austin knows.

When I say responsive, I mean when you apply slight throttle input, the car responds as expected. It is night/day between this and prior to the flash.

Rolling slowly in traffic 1K RPM and above, the car just smoothly accelerates per throttle input on my car.

Not sure what to make of your issue.
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      09-29-2010, 10:37 AM   #26
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Video added on first post of changer in action.
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      09-29-2010, 05:47 PM   #27
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nice reviews, I was going with this but since my local Giac dealers want $800 plus $90 labors making me think twice on what option to go for
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      09-29-2010, 07:37 PM   #28
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Quote:
Originally Posted by EVO_S4 View Post
nice reviews, I was going with this but since my local Giac dealers want $800 plus $90 labors making me think twice on what option to go for
Once you get the flash you ll wonder why you waited that long, lol
trust me.
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      09-29-2010, 08:19 PM   #29
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Quote:
Originally Posted by EVO_S4 View Post
nice reviews, I was going with this but since my local Giac dealers want $800 plus $90 labors making me think twice on what option to go for
This is the best bang for HP/TQ dollar available. I have had two piggyback systems and I wouldn't go back to them regardless of price. You can get the GIAC 1, stock map and handheld map switcher for about $1050.00.
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      09-29-2010, 09:27 PM   #30
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Quote:
Originally Posted by Bahltech View Post
Once you get the flash you ll wonder why you waited that long, lol
trust me.
so its normal for a dealer to charge you the extra $90 for the flash
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      09-29-2010, 09:37 PM   #31
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It looks like some do and some don't. Mine charged me $100. labor.
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      09-29-2010, 09:50 PM   #32
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Quote:
Originally Posted by EVO_S4 View Post
so its normal for a dealer to charge you the extra $90 for the flash
Quote:
Originally Posted by cvc 22349a View Post
It looks like some do and some don't. Mine charged me $100. labor.
Yes - it's normal and prices will vary. This is purely up to your GIAC dealer.

As a courtesy, we do not charge labor for flashes/reflashes.
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      09-30-2010, 05:38 AM   #33
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I didn't pay for labor
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      09-30-2010, 12:50 PM   #34
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Quote:
Originally Posted by BzzzBom View Post
I didn't pay for labor
My place adds $50 to the price.
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      09-30-2010, 11:02 PM   #35
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Austin,

Since you haven't returned my call from yeasterday, please read post #24. Maybe you can respond. Does throttle response/acceleration at lower rmp's with an AT with the GIAC flash depend upon MSD controller and BMW software version?

thx
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      10-01-2010, 02:13 AM   #36
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I had this question since stage 1 came out. From my understanding, GIAC applies its own throttle response in the flash. If you had the wastegate software fix that increased lag, flashing to stage 1 would fix this.

@Austin, a confirmation would be nice.

Quote:
Originally Posted by cvc 22349a View Post
Austin,

Since you haven't returned my call from yeasterday, please read post #24. Maybe you can respond. Does throttle response/acceleration at lower rmp's with an AT with the GIAC flash depend upon MSD controller and BMW software version?

thx
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