GL Class (X166) 2013-2015 after facelift became GLS (X166)

GL550 4matic Tuned vs GL63 stock.

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Old Jan 19, 2018 | 03:58 PM
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Kingmoe1982's Avatar
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E63, GL63, GL550
GL550 4matic Tuned vs GL63 stock.

Wanted to know which is the faster SUV? And also I'm unclear on the HP/TQ gains on the GL550 with a renntech tune, I'm seeing two different gain numbers, is there a certain gain for the 4matics and ones for red? Thanks

(I'm currently in the market to buy one of these in the next 4 weeks. If I can't get a gl63 spec numbers out of a GL550 4matic, I will just go with the 4matic 550 and get it a tuned and save money that way.)

I'm not new to the forum, just lost my password and user name from my last account.
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Old Jan 19, 2018 | 11:01 PM
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Dont have my numbers but on our 550 we added downpipes and tune. It’s very quick and feels quicker than a stock 63. I would surmise it would be close head to head.

I enjoy having pocketed about 20k by going 550. The 63 I didn’t feel was as quick vs a stock 550 when driving.


Originally Posted by Kingmoe1982
Wanted to know which is the faster SUV? And also I'm unclear on the HP/TQ gains on the GL550 with a renntech tune, I'm seeing two different gain numbers, is there a certain gain for the 4matics and ones for red? Thanks

(I'm currently in the market to buy one of these in the next 4 weeks. If I can't get a gl63 spec numbers out of a GL550 4matic, I will just go with the 4matic 550 and get it a tuned and save money that way.)

I'm not new to the forum, just lost my password and user name from my last account.
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Old Jan 20, 2018 | 06:19 PM
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Kingmoe1982's Avatar
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E63, GL63, GL550
Originally Posted by black06c230
Dont have my numbers but on our 550 we added downpipes and tune. It’s very quick and feels quicker than a stock 63. I would surmise it would be close head to head.

I enjoy having pocketed about 20k by going 550. The 63 I didn’t feel was as quick vs a stock 550 when driving.



Thanks Black, you really just made my decision much easier! If you come across the actual numbers please let me know!
Thanks Man!!
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Old Jan 22, 2018 | 10:15 PM
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2013 GL550 4Matic
I have a tuned GL 550. It is quicker that a stock GL63. I have several neighbors who have GL 63's and from a roll to over 100 mph, the tuned GL 550 is faster by a car length or two. It is also feels faster, having driven both, my tuned GL 550 and the GL 63.
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