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7 Posts
About 9 months ago I took delivery of a CLA 45 and after a good break-in, installed the Renntech tune--huge difference when used with 93 octane. I have about 850 miles on the GLA 45 now, so I will be doing the same with it.
I did not experience any difficulties with the unit, no check engine or other issues, just a nice extra kick. Since we are only talking about a 12% or so increase of power, that would seem to be well within safety tolerances. I can't vouch for what might happen with warranties, but in searching the threads, I haven't seen anyone being told that they were not covered. Just remove before going to your hopefully friendly dealer...
I have used Renntech tunes on my C63 and my wife's SLK 55's in the past and the performance boost on this car is the most noticeable ; probably because it hooks up so well.
I did not experience any difficulties with the unit, no check engine or other issues, just a nice extra kick. Since we are only talking about a 12% or so increase of power, that would seem to be well within safety tolerances. I can't vouch for what might happen with warranties, but in searching the threads, I haven't seen anyone being told that they were not covered. Just remove before going to your hopefully friendly dealer...
I have used Renntech tunes on my C63 and my wife's SLK 55's in the past and the performance boost on this car is the most noticeable ; probably because it hooks up so well.