Was looking online and saw that speed tuning USA makes a chip for Mercedes. They only cost 275.00 for the E320 and give 21 hp. I saw a thread where an sl55 owner did business with them was very satisfied. If you buy this with a K&N filter which is 50.00 shipping is free. What do you guys think? 275 sounds a lot better and more reasonable than what other people are asking for. Just my opinion.

 

An extra 50+ HP for less than $400?

Cough cough B**** Cough.

 

50?
How much does the filter get you? Let me know if you end up doing this cause I would be next in line. Don't you have to send them a part of your car or something?

 

Its 50 dollars for the K&N filters and I would imagine they only get you a couple of HP, nothing you can feel.