Switch from GIAC to MHD?

mangotangoe · 02-22-2016, 07:07 PM

Not 3 series but 1M has little activity. Been running a stage 2 giac FBO for couple of years and now thinking of a switch to MHD tune. First a stg2 then maybe a custom. Is there much power left untapped with the giac vs mhd? I know that I have no issues presently and on my many track days, have never had any heat/limp modes.
Anyone know if I can do a full write to get rid of the giac? Or is it locked, havent had a chance to try a write yet. I did however, do a quick log yesterday while the snow wasnt flying...
http://datazap.me/u/mangotango/test-2?log=0&data=4-12

E30 Racer · 02-22-2016, 07:51 PM

Going to MHD (custom tune) from GIAC on a 1M is night and day. Seriously, the car is completely different. Much, much more powerful.

To remove the GIAC tune you can return to a GIAC dealer to have your DME reflashed to stock or bring it to the dealer. I don't believe MHD will be able to override the GIAC tune...GIAC locks down the DME.

mangotangoe · 02-22-2016, 08:55 PM

I should note that I dont want to run any meth and no ethanol fuels available. Limited to mainly 91 octane.

alexg212 · 02-23-2016, 06:54 AM

Yes.

Jeff@TopGearSolutions · 02-23-2016, 10:28 AM

Wow, havne't heard anyone with GIAC in a while. Yes, it will be night and day, especially with a custom map.

ritzzzzzwik · 02-23-2016, 10:59 AM

Do it, NOW! lol..I recommend a custom tune from Wedge/BuraQ. Its like falling in love all over again LOL

Mike@N54Tuning.com · 02-24-2016, 01:28 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

Wow, havne't heard anyone with GIAC in a while. Yes, it will be night and day, especially with a custom map.

+1

I think its been 2-3 years since I have heard that pop up in a thread..

My vote is for JB4 with Back end flash!

Mike

mike@x-ph.com · 02-24-2016, 01:58 PM

Quote:

Originally Posted by mangotangoe

Not 3 series but 1M has little activity. Been running a stage 2 giac FBO for couple of years and now thinking of a switch to MHD tune. First a stg2 then maybe a custom. Is there much power left untapped with the giac vs mhd? I know that I have no issues presently and on my many track days, have never had any heat/limp modes.
Anyone know if I can do a full write to get rid of the giac? Or is it locked, havent had a chance to try a write yet. I did however, do a quick log yesterday while the snow wasnt flying...

Time to switch

TGNY 335 · 02-24-2016, 02:09 PM

love MHD and my custom tune. Never really saw any power levels put up with a GIAC tune. but I do know I love the custom tune on my car.

Eilbron1986 · 12-12-2016, 01:34 AM

Did u end up switching to mhd. Ive had giac stage 2 for 4 years now and i love it. But wondering if ill get alittle more power with MHD

02-22-2016, 07:07 PM	#1
mangotangoe Private First Class 14 Rep 123 Posts Drives: 1M Join Date: Apr 2009 Location: Canada iTrader: (2)	Switch from GIAC to MHD? Not 3 series but 1M has little activity. Been running a stage 2 giac FBO for couple of years and now thinking of a switch to MHD tune. First a stg2 then maybe a custom. Is there much power left untapped with the giac vs mhd? I know that I have no issues presently and on my many track days, have never had any heat/limp modes. Anyone know if I can do a full write to get rid of the giac? Or is it locked, havent had a chance to try a write yet. I did however, do a quick log yesterday while the snow wasnt flying... http://datazap.me/u/mangotango/test-2?log=0&data=4-12 __________________
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02-22-2016, 07:51 PM	#2
E30 Racer Captain 220 Rep 695 Posts Drives: '11 1M, '09 335i M Sport Join Date: Aug 2011 Location: Ohio iTrader: (2)	Going to MHD (custom tune) from GIAC on a 1M is night and day. Seriously, the car is completely different. Much, much more powerful. To remove the GIAC tune you can return to a GIAC dealer to have your DME reflashed to stock or bring it to the dealer. I don't believe MHD will be able to override the GIAC tune...GIAC locks down the DME.
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02-22-2016, 08:55 PM	#3
mangotangoe Private First Class 14 Rep 123 Posts Drives: 1M Join Date: Apr 2009 Location: Canada iTrader: (2)	I should note that I dont want to run any meth and no ethanol fuels available. Limited to mainly 91 octane. __________________
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02-23-2016, 06:54 AM	#4
alexg212 Second Lieutenant 52 Rep 278 Posts Drives: 335is Coupe/Mustang Gt Join Date: Oct 2013 Location: DFW iTrader: (0)	Yes.
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02-23-2016, 10:28 AM	#5
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Wow, havne't heard anyone with GIAC in a while. Yes, it will be night and day, especially with a custom map.
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02-23-2016, 10:59 AM	#6
ritzzzzzwik Captain 232 Rep 723 Posts Drives: SO M4 MT Join Date: Oct 2014 Location: NOVA iTrader: (0)	Do it, NOW! lol..I recommend a custom tune from Wedge/BuraQ. Its like falling in love all over again LOL Attached Images
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02-24-2016, 02:09 PM	#9
TGNY 335 Banned 195 Rep 212 Posts Drives: 2007 335xi 6MT Join Date: Nov 2015 Location: US iTrader: (0)	love MHD and my custom tune. Never really saw any power levels put up with a GIAC tune. but I do know I love the custom tune on my car.
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12-12-2016, 01:34 AM	#10
Eilbron1986 New Member 2 Rep 27 Posts Drives: BMW 340I Join Date: Apr 2013 Location: California/modesto iTrader: (0)	Did u end up switching to mhd. Ive had giac stage 2 for 4 years now and i love it. But wondering if ill get alittle more power with MHD
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