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S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

RENNTech Time for my enterprise

     
Old Feb 8, 2015 | 03:50 PM
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RENNTech Time for my enterprise
Sure.... I know.... there is no need for an ECU upgrade on the S550 especially if you are only gaining a mere 20hp. But then again there is no need for us to own a Benz when we could simply purchase a Honda Accord! I personally enjoy modifying my rides and this upgrade has been on the to do list for quite some time. This will change my entire reaction time because the pedal response is quicker and it will also delete the gov which cuts the fuel off at a certain speed. These cars were meant to be driven and I plan on releasing every drop of its potential in a few weeks. 382hp to 402hp is noticeable and if I was were willing to sacrifice the discreteness of a quite engine I'd add the RennTech headers as well. If anybody has already Renntech'ed their S550 or looking forward to making the move please chime in. I'd like to hear everyones thoughts, gripes and concerns.
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Old Feb 9, 2015 | 09:54 PM
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Did it on mine, totally different accelerator response and trust me once ecu and headers changed you will feel big difference in power
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Old Feb 10, 2015 | 12:24 AM
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Hearders sound
Originally Posted by alexandercat76
Did it on mine, totally different accelerator response and trust me once ecu and headers changed you will feel big difference in power


How loud are the headers.... I mean are they annoying noticeable or are they bearable.
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Old Feb 10, 2015 | 12:34 AM
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Originally Posted by 0mercy
How loud are the headers.... I mean are they annoying noticeable or are they bearable.
Loud for the first week, then I got used to it
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Old Feb 10, 2015 | 12:49 AM
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Dyno?
Originally Posted by alexandercat76
Loud for the first week, then I got used to it


Yea.... I wish I could get use to that but I don't think I can handle the rumble of the engine headers everyday. Did you get it Dyno'd after the work was done? What kind of numbers did you put down?
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Old Feb 11, 2015 | 08:51 PM
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Originally Posted by 0mercy
Yea.... I wish I could get use to that but I don't think I can handle the rumble of the engine headers everyday. Did you get it Dyno'd after the work was done? What kind of numbers did you put down?
No dyno, went straight to interstate 294
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Old Feb 12, 2015 | 01:09 AM
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LMAO..... I'm sure you had that thing screaming.... I'm looking at a 2012 CLS63... If I go that route the upgrades have to stop.
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Old Feb 12, 2015 | 03:10 PM
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I was considering these guys...
https://m.youtube.com/watch?v=VxXgFn0WEoo
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Old Feb 12, 2015 | 04:45 PM
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How much does RT charge for the ECU program On the 550?
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Old Jul 5, 2015 | 01:12 PM
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RENNTech Time for my enterprise
$1500
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Old Jul 5, 2015 | 01:23 PM
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Originally Posted by alexandercat76
$1500
$1500 for 20 hp? Egads! That's almost as bad as the M5 boys adding an aftermarket CAI that makes no power for $1200. But at least it looks pretty.
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