Tuning GL550 2011
01-28-2019, 02:30 PM
#1
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Tuning GL550 2011
Anyone tune their X164 GL550 yet? what software/company did you use? Any driving difference/performance gains?
01-29-2019, 08:46 PM
#3
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E55, GLS450, GL63, GLE350
20 hp. Not really worth while IMHO. https://www.renntechmercedes.com/ind...-405-tq-detail
01-30-2019, 12:14 PM
#4
20 hp. Not really worth while IMHO. https://www.renntechmercedes.com/ind...-405-tq-detail
01-31-2019, 09:39 AM
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Something Slow
i think www.eurocharged.com has a Tune for GL550s
01-31-2019, 11:39 AM
#6
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There are some options for tuning:
Stock 382 hp 391 lb-ft
weistec engineering M278 upgrade $1,499.99 540 hp 715 lb-ft
renntech ECU upgrade $1,490.00 402 hp 405 lb-ft
brabus B50 – 500 ? 500 hp 516 lb-ft
eurocharged GL550 biturbo $1,999.99 530 hp 606 lb-ft
Stock 382 hp 391 lb-ft
weistec engineering M278 upgrade $1,499.99 540 hp 715 lb-ft
renntech ECU upgrade $1,490.00 402 hp 405 lb-ft
brabus B50 – 500 ? 500 hp 516 lb-ft
eurocharged GL550 biturbo $1,999.99 530 hp 606 lb-ft
01-31-2019, 11:45 AM
#7
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I used Renntech because their shop is close where I live. Just dropped the car and waited 2 hours. The results were quite impressive, response and fuel consumption improved from a poor 12-13 mpg to 18-20 mpg @ 80mph
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01-31-2019, 11:51 AM
#8
renntech is the only one on that list for the X164 naturally aspirated engine. The rest of those are for the twin turbo in the X166.
01-31-2019, 12:19 PM
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02-04-2019, 05:45 PM
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02-06-2019, 12:07 PM
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E55, GLS450, GL63, GLE350
So, just got off the line with Renntech, they do offer a tune on the 164 GL 450. They said it nets 20 HP and 14 TQ for $1490 plus $30 shipping and is loaded by a hand held tuner via the OBD port. If your mileage claims are accurate, it might be worth doing if you plan to own the car long term.
02-06-2019, 02:52 PM
#18
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I drove the car for about 47K after the tune. Just making a rough calculation with the tune I used approx 2800 gallons of premium (approx $6160 @ 2.2$ per gallon), without the tune I would use approx 4700 gallons ($10340). Roughly I saved 1900 gallons or $4180 over the past 2 year and 9 months.
02-06-2019, 05:10 PM
#19
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So are we talking about a M273 in the X164 or a M278 in a X166 i’m confused. The OP was asking about the 273... Or maybe someone else is confused. But, OE has a tune for the 273 for like $400 if i’m not mistaken for the 20HP gain.
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02-06-2019, 05:31 PM
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02-08-2019, 04:31 PM
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2007 GL450
Now, possibly something was broken before, and someone fixed it (were you in limp mode?), which seems feasible given 12-13 mpg at 80. This makes a little more sense.
It does seem to me that if such an easy tweak were possible, MB would have implemented it long ago.
Last edited by eric_in_sd; 02-09-2019 at 10:39 AM.
