Pertplus

Just heard stories about the intracies of tuning the M157 ECU and various mishaps with one well known tuning company. Any experiences (good, bad and ugly) would be greatly appreciated.

AC24

I always use Tony at Chariots of Fire in San Diego, CA. 858-735-4500

Reliable and honest.

xtyper

My Renntech tune is phenomenal. Runs very strong with absolutely no hiccups or issues. I highly recommend it.

And if you don't mind, pm me about the tuner mishaps you've heard.

Mr. Happy

I'm a Kleemann fan. Here's a link that may give you some more info on the output differences for different tunes. They're quite comparable to each other. The key is reliability I believe.

https://mbworld.org/forums/cls55-amg...read-m157.html

freefall

If in San Diego call Eric at HG Motorsports...DOITNOW....

Pertplus

I know HG motorsports and ill pass...thanks

Pertplus

Ended up going with kleeman tune and downpipes. Installation next week.

otherotherbenz

try Weistec Engineering, u won't regret it
strongest tune available if I'm not mistaken

freefall

Good luck...just get her out to the next Shift S3ctor event so we can all compare!

Rock

What made you decide on Kleemann? I'm trying to make a final decision on a tune and downpipes and the ones I have on my list are:

• Kleemann (Cory is a great guy to work with)
• Renntech (Most expensive but worth it?)
• MBH downpipes/ Evotech tune
• Velos (I'm not sure if they have their own downpipes or if they use Agency Power)

Pertplus

It was between the MBH/evotech combo and kleeman. Renntech is more than I want to spend. Velos I don't know personally anyone who vouches for them. Weistec did my C63 super charger, but then heard a very disconcerning episode involving a customer getting a tune from them, and the details were enough to make me pass on them. I know MBH's quality is great (had their LTH on my C63), but Kleeman's rep from people I know directly and the fact that their downpipes were in stock, made them my choice.

freefall

Curious - If they were all the same cost would you have gone with Renntech?

Pertplus

Including downpipes? I would have definitely considered it. Had renntech pulley and tune for my 2005 E55 and loved it (had Evosport shorty headers, throttle bodies and cooling package). Renntech's quality to me is fantastic, but unlike how I feel about HRE (at the end of the day the only wheel I want on my cars) -- there are other brands I could go with for less money and still feel comfortable. On a side note, I love the brabus exhaust...just don't want to pay $10k for it.

Rock

I'm getting quotes of $1300-$1500 additional for the Renntech tune and downpipes. I am anxious to hear your thoughts on the Kleemann set-up.

Karl901

Living in W. Palm Beach, I have used Renntech for six AMGs tunes.
The only issue was I blew a OE torque converter on my 2003 E55.
All I can say is people send brand new cars there right off the boat literally,
and not just C s, but SLS, CLs, Etc. There was 3 C 63 blacks there a month ago.

But , I am either bias or maybe just lazy due to logistics.

freefall

I have the Renntech R2 package, their catless DPs (and a retune for them) and LSD. I also have K&N filters and a icebox intercooler kit. I should dyno about 630ish (w/o ice and filters) per Renntech and will dyno it myself after Thanksgiving. I'll let you guys know...

Vic55

How did I miss this thread.... I have attached my thread on the OE Tune I got (on both my M157's). Ive had OE tune many of my cars as listed in the thread. Whats also important is the gains over the sweet spot of the curve not just peak HP which is rarely used in the M157 engine.

My local Benz Tech, Serge at Benzworks, is well known in SoCal and will tell you that this tune is strong and he has tested many other tunes including several mentioned in this thread.

Its always buyer beware and pay to play so happy tuning!!!!!!!

My tune was done on a DynoDynamics (low reader)

Please Click Here

Pertplus

For me, as a non-track driver...the main considerations in picking a tuner are price and customer service. Whether one tuner gets my car "X amount" of HP/TQ and the other gets X + 10%, is immaterial to me. What matters the most is whether the tuner (and/or manufacturer of hardware) will stand by their product if there is an issue; and if there is a problem, whether they will do everything in their power to remedy it. That was the main reason behind me starting this thread -- to try and ferret out whether there are any tuners to stay away from due to egregious customer service issues (as opposed to one tune boasting more gains than another).

It is comforting to know, however, that the people in posting in this thread have had seemingly great experiences with a wide variety of companies. Thanks for all of your input...truly appreciated.

emericr

I have heard rumors as well regarding companies breaking ECUs but I do not know whcih company that is.
I had a Eurocharged tune on my C63 and I will go with Jerry again. Great customer service and pricing is reasonable.
If Renntech was reasonable, I would go with them since they are fairly local but for the price of a Renntech tune, I can get MBH downpipes and EC tune so I think it is a no brainer.

Pertplus

Is Powerchip still in business?

AC24

Saw your car in person the other day. Looks great!

VividRacing

Bump for more info, Just interested in seeing which way people are going and what the results are!