e500slr

I'm just wondering how important headers are when installing a Stage 3 Weistec SC on the M156. I know they say free flowing exhaust required but is it possible to install the Stage 3 without an exhaust or headers? I know you'll lose power but the M156 is a LOUD and raspy engine with headers and a free flowing exhaust.

Weistec

Running high flow exhaust with our Stage 3 system is a requirement. The cylinder temperatures and pressures become extremely high without it. The factory exhaust manifold is a bottle neck in the system. Please let us know if this helps. Thanks!

Weistec Engineering

e500slr

OK so when you say free flowing are you talking catback or are you saying headers are a must too?

timeToy

Exhaust manifold = header.

A cat back is going to be useless to help with flow and temp, they are just good for sound.

Weistec

Exactly what timeToy said. Cat back exhaust systems do not really hinder flow unless you are trying to make quite a bit of power (over 800 hp).

A long tube header is optimal and will run the best with our systems, and there are many companies to choose from. You can run high flow cats (100 cell) to muffle the sound, but these cars are naturally loud.

Our Stage 1 system is however designed for a stock vehicle. This increases the power quite a bit yet you can maintain the factory exhaust system. Please let us know how we can assist from here. Thank you!

Weistec Engineering

PACougar

Why would you want the stage 3 if you aren't interested in running headers? It just seems like it would be a waste regardless of the fact that it's necessary.

e500slr

I was thinking for it to be a super-sleeper. I know an AMG is not a sleeper period but still, once you get headers and high flow cats it sounds like a race car. Weistec what's the power potential like with the Stage 1 and no exhaust?

PACougar

Ya, I can understand that. If you wanted the power, but still wanted a sleeper why not wrap the crap out of the headers(it'll quite them down) and run a pre-muffler muffler. It's just a thought, but I think you could achieve what you're looking for and still go stage 3 with headers, you'll just have to do a little extra work.

SterlingE55

If you want it quieter swap for E55 mufflers. They are the most quiet of the bunch. Or maybe S-class. But you can quiet her down from then LTs back with out much reduction in flow. My car with LT, HFC, Xpipe into stock resonator and mufflers (E55) is very very tame until WOT of course. But that's when you want it to bark.

Manuyc

That thing is going to be real loud can t to hear it

newlyAMG

do they even mention the transmission in all this? I know the 7spd is only rated for like 546lb/ft of torque, which is managable with typical intake/exhaust upgrades, but The stage 3 is talking about being well north of 600, is there no worry of blowing these things up left and right if anyone actually drops 15k on the kit?

Weistec

Our Stage 1 system is rated at 637 Horsepower and 560 ft-lb of Torque. This system is truly a sleeper and makes more than anything you can bolt on, such as long tube headers, tuning, air boxes, etc.

We have made about 650 lb ft at the wheels with the stock 722.9, but we do highly recommend our bulletproof transmission upgrade when installing the Stage 3 system. The 2012+ MCT can handle the power of the Stage 3 system without a problem.

Our Stage 1 and 2 systems work great with the stock transmission, and these kits we recommend for those that want bolt on easy power.

Please let us know how we can assist from here. Thank you!

Weistec Engineering

berti_00

i wish you guys would have made the throttle body just like you did on the C63's to retain the OEM air filters and the engine covers etc

Weistec

It just wasn't possible to fit all the parts in such a tight package. Plus the M156 (C63's) have much larger air boxes that can support the added power. The original E55 air boxes and inlets are a restriction with the stock supercharger system.

Weistec Engineering

kompressede

++ to Sterling. The average person sitting next to me at a light has NO idea I have LT headers. I have the xpipe also (no drone) with stock mufflers. Very happy I went this way.

Jon2007E63P30

Thus invalidating the CARB approval, correct? If I am not correct, and you can install me a CARB approved system, lety me know.

Dare's E55 K2

About how much does the Stage 1 kit cost? And what is included? Sorry, newbie here.

e500slr

This is for a C63 but sounds good and I think has LTs, it's the only one I've seen with no rasp

lunarx

Is the 2012+ MCT stronger than the 2010 MCT? Talking E63 (not C63).

lwalling

So turning it around, what if you do have those needed mods and more?

My car has Renntechs long tube headers, highflo cats, throttle body, airbox, and software, plus their lsd os giken diff.

Will the supercharger bolt up with the tb and airbox, and do you already have a tune already incorporating all these parts that works safely and consistently?

What kind of power could I expect out of the stage 1, 2, and 3 systems based on the above and the parts cost?

Thanx