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Best tuning for g63

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Old Sep 4, 2013 | 10:07 AM
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MPLV's Avatar
MPLV
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06 FGT
Best tuning for g63
Who should I go with, Leaning towards OE because they seem active here and are priced lower than most. Who did you go with and why
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Old Sep 22, 2013 | 03:28 AM
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alabbar
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G36 - G500 -w220-w216
i would recommend :

1- RennTech
2- Hennessey Performance

well know and massive 700hp
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Old Sep 24, 2013 | 05:17 AM
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mercteil
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From: Europe
G Wagon
BRABUS!
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Old Sep 24, 2013 | 07:52 PM
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G55K
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I wouldnt give my car to Hennessey if they tuned it for free.
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Old Sep 24, 2013 | 10:29 PM
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DelrayG63
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2013 G63
I took my G63 to Renntech. They did a great job. This truck is fast as hell now. The other day I was in my Ferrari California and my brother in law was in the G. We both took off side by side at a green light. The G was literally neck and neck with the Ferrari. I am very happy with Renntechs tune- couldn't imagine anyone doing a better job quite honestly.
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Old Sep 25, 2013 | 12:16 AM
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alabbar
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G36 - G500 -w220-w216
Originally Posted by DelrayG63
I took my G63 to Renntech. They did a great job. This truck is fast as hell now. The other day I was in my Ferrari California and my brother in law was in the G. We both took off side by side at a green light. The G was literally neck and neck with the Ferrari. I am very happy with Renntechs tune- couldn't imagine anyone doing a better job quite honestly.
just ecu tune or something more ?
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Old Sep 25, 2013 | 01:02 PM
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G63DCC
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From: Danville, CA
2013 G63
Originally Posted by DelrayG63
I took my G63 to Renntech. They did a great job. This truck is fast as hell now. The other day I was in my Ferrari California and my brother in law was in the G. We both took off side by side at a green light. The G was literally neck and neck with the Ferrari. I am very happy with Renntechs tune- couldn't imagine anyone doing a better job quite honestly.
Same here....at least everything but the Ferrari part

IMHO, the ECU is all you need to do. Low price/big returns. The exhaust is already loud, without being obnoxious. Body kits and wheels....not for me.
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Old Sep 25, 2013 | 11:20 PM
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BlackSL
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2013 G63, 2015 S500, 2016 C63 coupe
did you do the transmission upgrade with the renntech ecu tune?
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Old Sep 26, 2013 | 07:16 AM
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DelrayG63
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2013 G63
All I did was the ECU tune and replaced the air filters. I am really surprised at the torque and speed.
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Old Sep 26, 2013 | 04:39 PM
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From: Danville, CA
2013 G63
Originally Posted by DelrayG63
All I did was the ECU tune and replaced the air filters. I am really surprised at the torque and speed.
Same here...just the ECU...and the difference is plain insane, on an already stock-rocket.

My understanding is that the transmission upgrade is more for off-the-line torque demands and I believe that is why RennTech throttled back on the tuning specs. Having said that, I spoke w/Renntech about the specs and they said they will still flash w/the original specs if asked.
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Old Sep 28, 2013 | 03:07 AM
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G55
Originally Posted by G55K
I wouldnt give my car to Hennessey if they tuned it for free.
a lot of people on various forums seem to be very negative about Hennessey; there has to be some truth to it - however always amazed how much press Hennessey is getting in mayor publications.

Renntech - but stock is best...
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Old Oct 9, 2013 | 12:23 AM
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14'G63 AMG ,1994 Mercedes E500, 2020 Range Rover HST
Is it true that Brabus tune costs like 9k???
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Old Oct 21, 2013 | 04:30 AM
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2011 G55
Originally Posted by G55K
I wouldnt give my car to Hennessey if they tuned it for free.
Originally Posted by gollard
a lot of people on various forums seem to be very negative about Hennessey; there has to be some truth to it - however always amazed how much press Hennessey is getting in mayor publications.

Renntech - but stock is best...
Heard the same about Hennessey: stay away.

Press in major magazines and media is all about advertising dollars.


Originally Posted by hubert
Is it true that Brabus tune costs like 9k???
Maybe even more. Brabus is one of the, if not the, most expensive mod company.
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