My build
10-01-2018, 09:14 AM
#26
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10-01-2018, 01:18 PM
#27
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The only mod I would consider is a Renntech tune, and will be running 19X11 and 19X12 Forgelines with Michelin slicks for the track. I agree with you, I don't think anywone could improve the suspension on this car with aftermarket parts.
11-02-2018, 06:48 PM
#28
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My car cleared customs yesterday (November 1st) and salesman once again confirmed that it's just going to sit in a warehouse until December. Hopefully it's December 1st and not 31st. LOL!
11-02-2018, 07:41 PM
#30
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Driving GTR over 2 days at COTA, there is definitely a throttle lag out of corners that needs to be addressed. My friends tuned GTS would hands down beat up a GTR in a straight line badly.
11-02-2018, 09:45 PM
#31
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They rate the stock GTR at 609/541 crank- https://www.renntechmercedes.com/ind...mg-gt-r-detail
and their tuned GTS at- 601/582- https://www.renntechmercedes.com/ind...gt-s-fl-detail
11-02-2018, 09:51 PM
#32
MBWorld Fanatic!
Depends on the tune I guess. Not a big difference with Renntech's which is probably fairly conservative:
They rate the stock GTR at 609/541 crank- https://www.renntechmercedes.com/ind...mg-gt-r-detail
and their tuned GTS at- 601/582- https://www.renntechmercedes.com/ind...gt-s-fl-detail
They rate the stock GTR at 609/541 crank- https://www.renntechmercedes.com/ind...mg-gt-r-detail
and their tuned GTS at- 601/582- https://www.renntechmercedes.com/ind...gt-s-fl-detail
Have you driven both?
11-03-2018, 01:36 PM
#33
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Plus the DCT is more aggressively tuned in the GT R versus the GT S, so unless your friend’s GT S has far more hp/torque than a stock GT R, I do not think it could beat a GT R 0-100 mph; 1/4 mile, etc. As for on a road course; forget about it.
Bish
11-05-2018, 12:01 PM
#35
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I really want to do a Renntech tune, but I've had nightmare issues with my wifes E63 wagon so would be afraid of something going wrong and them not covering it.
11-05-2018, 02:48 PM
#36
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And then there’s the warranty issue. Is a Renntech tune sold and installed by certain dealers going to cause any form of warranty issue at a non-Renntech dealership or MB themselves? I don’t know the answer to that, and I’d want the warranty implications written down on paper and signed by the Service Manager at the selling/installing dealership.
11-05-2018, 04:18 PM
#37
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So I was checking on the Renntech tune for the GT R a couple of days ago. It states that it’s mandatory that you use 93 (US) octane fuel, and if all you have locally is 91, to call them. The gains themselves aren’t great even on a 93 octane tune, especially given the cost, so the 91 octane tune would not be worth the money to me.
And then there’s the warranty issue. Is a Renntech tune sold and installed by certain dealers going to cause any form of warranty issue at a non-Renntech dealership or MB themselves? I don’t know the answer to that, and I’d want the warranty implications written down on paper and signed by the Service Manager at the selling/installing dealership.
11-05-2018, 04:28 PM
#38
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16 E550 Cab, 2003 Ram bright red crewcab 4x4 we call Clifford :)
my dealer in Sarasota said no more rentech tunes installed at dealer and it would kill the warranty. When they see it on engine computer it gets flagged... I forget the code he used...
11-06-2018, 10:00 AM
#39
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My local dealer here in the Kansas City area is still a Renntech dealer to the best of my knowledge. I’ll check in a couple of weeks when I take the car in for service A1.
