who has ams headers?
Just to give rough comparison of the gains to expect as far as what you actually feel, the headers gain more than the X-pipe + 2nd cats + ECU combined... it really does transform the car, especially in the 2300-3500rpm range. In doing so the tranny ECU is actually smart enough to adapt & adjust and it actually changes the shift points to compensate for the new torque so it downshifts alot less b/c it simply doesn't need to. Makes the car behave alot more like a manual than an automatic when driving in "3" tiptronic & etc. All the other mods are nice... but the real Achilles heel of the M113 is the stock exhaust manifolds... they are pure junk.
Stage 2 is now only $1499 w/ free domestic shipping. Headers alone are now only $1099 w/ free domestic shipping. All prices are now firm and will remain at these levels, so if you have been waiting now is the best time to buy them. No more group buys or etc.
Hope that helps,
~AMS~
Last edited by AMS Performance; Jun 24, 2010 at 12:30 AM.
http://www.youtube.com/watch?v=9Pd1S...eature=related
http://www.youtube.com/watch?v=9Pd1S...eature=related

once I'm done it will be time to move onto another project.
Excellent, then you are already set up for maximum power. The ECU tune is the icing on the cake but not much more then that. Low double digits is a realistic estimate, don't expect much more then that. All these claims of 25+ HP are pure fanatasy, after all, think about it... do you really think AMG left that much power on the table from the factory? The ECU helps, but its really only meant to fine tune and finish off all the hardware... nothing more.
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BTW, can you give a full exhaust setup on your car? Do your have a rear muffler or is it straight pipes from the manifoilds? Sounds awesome!
http://www.youtube.com/watch?v=9Pd1S...eature=related
car responds so much better now and pulls harder especially in 3rd gear
Other words: changing the muffler you payd by sound, but any about performance
Fabio Daniel
Last edited by Fabio D; Jul 7, 2010 at 12:37 AM.
There are small things you can do: X-pipe, K&N.
These cars aren't your typical muscle or import car, where you can slap on an "intake" or bigger exhaust pipes and a straight through muffler and get gains. MB already thought of those things and has balanced the car to fit the MB personality as well as hit pricing goals.
That's why in AMG's you see Headers, Pulleys, X-Pipe, ECU Tunes, Cooling Mods (on the S/C'd engines) as common mods for these cars.
Aftermarket mufflers are mainly just for sound, and I personally love having a relatively quiet beast lurking under my hood.
You will get ALL the sound you need from headers, high flow 2nd cats, & X-pipe... The biggest sound change is from headers, next the 2nd cats, then X-pipe. ESH is right, with OEM muffler you keep the stealthy characteristics at part throttle, but when you open her up WOT... she turns from Dr. Jekyl to Mr. Hyde
Last edited by AMS Performance; Jul 7, 2010 at 02:02 PM.
https://mbworld.org/forums/w210-amg/...work-done.html
My next question is, anybody in Connecticut knows a good muffler shop that knows what I mean when I pull out all the hardward and ask them to assemble the pieces together. I'll have to bring jtbeche's pictures to show them.


