collarman

Anyone have numbers on the times for a cls550 with the Renntech upgrade?
I see plenty of charts but I am looking for real world results "AFN's"( actual fn numbers). I don't have the 4 Matic and I would like to know if it makes sense. There are two upgrades with the more aggressive one only a few hundred more. Why would anyone go for the lower one?

malaka1

http://www.boostaddict.com/content.p...de-M278&page=2

447whp 516wtq

I would expect around that with any tune. The lower Renntech is most likely for people who want more reliablity but I kind of doubt running a couple of lbs of boost less will make that much of a difference in reliability.

malaka1

Those numbers a little higher. 452whp 531wtq
Man i bet that torque comes on strong, which makes me want to tune even less since we cant fully disable traction control/stability.. I know you can in dyno mode but then all the lights come up in your dash and no ABS

TTMBCLS

i want to get the tune. but it was hard pulling out the ecu. still havent done it. The renntech tune is slightly out of my budget and I wanted an exhaust but out of my budget too.

Highroller735

I have the Renntech tune on my 2012 CLS550. The lower tune is optimized for 91 octane, which is unfortunately what I had to go with in Southern California...


Here's the numbers dyno'd on my car:

Max Stock 357.545 WHP
Max Tuned 415.86 WHP

MBmemphis

Anyone know anything about the company AMS performance out of Chicago? Would that be a better tune up then Renntech?