SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: SL55, SL600, SL63 or SL65 For Performance Upgrades?

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Old Oct 12, 2009 | 03:23 PM
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SL55, SL600, SL63 or SL65 For Performance Upgrades?

My brother is looking to pickup either a SL55, SL600, SL63 or SL65. It is going to be his daily driver for only 15 miles round trip in Southern California. He currently drives a 08 SMG M6 for a daily driver. For a price range around 80k which is the best vehicle that can be tuned for the maximum power? What will be comparable in handling and transmission wise? Thank you.
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Old Oct 12, 2009 | 03:48 PM
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#1. you wont get SL63 for 80K.
#2. the most tunable ones are the turbo ones obviously so the SL600 and SL65.
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Old Oct 12, 2009 | 04:24 PM
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If he finds the right SL63, he won't mind paying 95-100k if the deal is right. Which vehicle is better to tune, the SL600 or SL65? Aren't there more advantages to the SL65 since it comes with better brakes, suspension, etc...?
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Old Oct 12, 2009 | 04:41 PM
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I've been told that the SL55 has more mods you can do with it...but the SL65 with a just an ECU/TCU will be plenty fast, so less mods for the v12tt
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Old Oct 12, 2009 | 05:23 PM
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Originally Posted by CA-SL55
If he finds the right SL63, he won't mind paying 95-100k if the deal is right. Which vehicle is better to tune, the SL600 or SL65? Aren't there more advantages to the SL65 since it comes with better brakes, suspension, etc...?
The SL600 is the only 600 to come frome fact w/55 AMG 8 pot/ 4 pot calipers It was an option on all other 600 models...Suspension is the same, ABC used across the board 600/65 models...

Last edited by Thericker; Oct 12, 2009 at 05:45 PM.
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Old Oct 12, 2009 | 05:31 PM
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So what is the benefit of getting the SL65 over the SL600? I know the aerodynamics and in terms of power it is 510 HP and 612 ft lb for the SL600 and 604 HP and 738 ft lb for the SL65. Is it worth the savings to go with the SL600 over the SL65 to invest the money in tuning?
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Old Oct 12, 2009 | 05:38 PM
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new balance
both the sl600 and the sl65 are so cheap now get the 65 and call it a day, tuning is relatively inexpensive.
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Old Oct 12, 2009 | 05:47 PM
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SL65's are quite hard to find with a CPO, only a few out there right now.
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Old Oct 12, 2009 | 05:48 PM
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Originally Posted by JAYCL600
both the sl600 and the sl65 are so cheap now get the 65 and call it a day, tuning is relatively inexpensive.
+1 in this market no brainer SL65...
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Old Oct 12, 2009 | 08:09 PM
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96 P993T, 00 E55, 09 SL63
Originally Posted by CA-SL55
So what is the benefit of getting the SL65 over the SL600? I know the aerodynamics and in terms of power it is 510 HP and 612 ft lb for the SL600 and 604 HP and 738 ft lb for the SL65. Is it worth the savings to go with the SL600 over the SL65 to invest the money in tuning?
Seriously, you do not invest in tuning . . . you will loose
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Old Oct 12, 2009 | 08:49 PM
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The other comments are on the money but I'll chime in anyway.

Your brother would get max power from a modified SL65. If he can't find an SL65 that he likes, he can get pretty close to the same power level with a modified SL600. The biggest difference is the SL65 has a larger displacement engine, 6.0l versus 5.5l.

SL55s can be modified to make a fair bit of power but are down on displacement compared to both the SL65 and SL600 and the supercharger is less efficient than the twin turbo setup so you have to work a lot harder (and spend a lot more money) to reach similar power levels.

SL63s are great cars but the naturally aspirated engine doesn't lend itself to power mods.

FWIW....
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