Renntech ECU Upgrade 2013 S550
#4
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2015 S550
Loss of warranty, coil packs burning out a little quicker, and cost. Renntech is crazy expensive. You can get the same results for less than half that much through Eurocharged.
#6
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Depends on the weather
^ Correct. No dealer will know you have a tune unless there is a specific issue with your ecu that you have them working on or something related to it or unless YOU tell them.
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#12
Just went and check out RennTech. I had never heard of them. (I'm new to the German import world). DAYUM, they're expensive! $2700 for 100hp is not a very good ratio. I can tell me car modding is going to get expensive! ![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
Good on you, though. I'd love to see some dyno slips.
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
Good on you, though. I'd love to see some dyno slips.
#13
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Join Date: Nov 2014
Location: Land of Political Criminals and Urban Shootings
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2015 S550
Just went and check out RennTech. I had never heard of them. (I'm new to the German import world). DAYUM, they're expensive! $2700 for 100hp is not a very good ratio. I can tell me car modding is going to get expensive! ![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
Good on you, though. I'd love to see some dyno slips.
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
Good on you, though. I'd love to see some dyno slips.
Like I mentioned earlier, check out Eurocharged. Same results for less $$. Eurocharged.com.
Last edited by DaveW68; 08-31-2015 at 10:37 AM.
#14
Member
RennTech is an absolute rip off! $4480 for a pair of stainless steel, ceramic coated headers?!?! Come on, you would have to be a fool to buy this crap! Shouldn't be a dime over $600
As far as chips go. Eurocharged offers more dyno proven performance for the s550 for $500. Much better than Renntechs $1500 price tag!
As far as chips go. Eurocharged offers more dyno proven performance for the s550 for $500. Much better than Renntechs $1500 price tag!