G55AMG

Just wondering what performance modification are some of you done or are planing on doing to your cars?
If you done modification, are you happy with the results?


Thank you

Merc63

http://www.weistec.com/m156scs3.html

If your gonna go, go big!

GrnLantern

So far, still stock. Might do an airbox upgrade, but probably nothing else for now, for a while.

I have had an itch to get a medium/higher mileage CLK63 BS and toss it at Weistec for a full engine rebuild (ARP Head Bolts, etc.) and a CARB compliant SC upgrade. I think I'll be keeping my C63 BS stock, though.

Even Money

If you're gonna get a CLK BS as a second, I assume, track car, why do a full build and then worry about CARB compliance??

GrnLantern

Yeah, that's a good point. I originally figured I'd want that to keep it versatile so that it's not strictly just a track car.

Kaiba

500hp stock
MHP Headers & mids with Cargraphic xpipe/valve mufflers & Velos tune
540hp

Not happy with the whole result.

MHP headers are way too big for the engine. The throttle pedal has some vibrations at WOT.
Cargraphic mufflers are not well built. Already changed one as a metal piece broke INSIDE the muffler.
Velos tune... no comment.. Very bad timings , tune running too rich... & 20hp.. The handheld programmer is worthless.... Many tuners will reflash for free anyway...

I would suggest removing the res for the first mod & airboxes. Other than that , better to keep it stock for a while. Don't mess with perfection. I learned it the hard way.
If you want "safe" performance , go with Weistec or well known tuners.

olszowa12

Kaiba, do You mean that Velos does not reflash for free if You already have their tune?

Kaiba

No sorry. I don't know about them if they reflash for free.
What I meant is that the software is useless to me as the tunes are not working. And you can't add any other files to the programmer unless it is from Velos.
I first wanted to use the programmer to store customs tunes but they wanted me to revert back to stock to refund me the programmer. After all , no refund so I have a programmer with 3 tunes that I don't use and don't work. a 1500$ value

G55AMG

Kaiba
Sorry but what is removing the res?
Excuse my ignorance
Thank you
JV

mthis

As much crap as I talked about MHP I can't discredit there headers.
MHP headers are perfect for this car, proven on track and Dyno and daily driving.
They are 1 7/8 true longtube 4-1 collector to 3inch mids they mate to stock resonator. Gains from that is over 100rw with matching tune,
U butchered u exhaust system and u have a wack tune maybe that's why u gained 40hp and have rubbing issues.
U have money to dump on a BS why not do it rite.

Kaiba

I always supported MHP with my previous C63. I don't say their headers are bad. Maybe the Black doesn't have the same engine compartement as a "standard" C63. dunno.
Headers alone made 15hp so for sure they are good

mthis

The best mods you can do u BS already has.
# 1 is tune, U already have that from AMG
# 2 is LSD
# 3 weight reduction. CF hood ,trunk, lightweight wheels, lightweight rotors, CF roof

If that's not plenty of power for u then add headers u will have a car that has 600 plus BHP

mthis

Dude 15rw something is wrong there. Are u sure u have no exhaust leaks.
Have someone custom tune it for you and go to someone legit that has some proven results.

G55AMG

What is wrong with the BS LSD?
JV

dbasons55

My build in process

Mort

Nothing. mthis is saying that the best mods the BS already has including the LSD.

dodger63

Prob took the sedan headers and put them on the blk, as far as I know which I could be totally wrong there is no design from Mhp for the coupe

Maverick1975

I have Xtra power supercharger sitting on shelf yet that i have not had installed but hope to do sin teh new year. Should be good for mid 600s hp i think...