Infamous Jiggs

What would be the best option for tuning on this car? Renntech, Kleemann, Brabus, or someone else?

E55AMGFan

Can't go wrong with Kleemann or Renntech. Kleemann prices are cheaper than Renntech's IIRC and they yield similiar gains.

Infamous Jiggs

I have a full Kleemann SL55. They wont open me as a dealer so I guess I will just go with Renntech. Didnt know if there was anything else out there.

absent

Brabus has most reliable and true gains but is horrendously expensive.
Kleemann is the least expensive but unreliable gains and in some cases (in 2 of my cars) created very pricey problems plus lost warranty (SL65).
Renntech overstates the gains but overall,taking everything into consideration was my choice(3 cars).

Reckless

absent: What kind of problems did the tune create?

IngenereAMG

We have a great ECU set up for the 65 cars. Check out our site and testimonials. I know that you will love the performance, our client service and our pricing.

http://www.veloceperformance.com/testimonial.htm

absent

The ECU itself did not ,the gains were just grossly exagerated (instead of 100hp barely 35hp at the wheels)
Had problems with LSD (affected the handling) in SL and cracking headers (twice) in G55 (always after 10k miles warranty expired).

Infamous Jiggs

Hmm. I have an account with brabus but prob still stupid amounts of money.