Hey guys. Need some advice/help

When i bought my 09 C63 6 months ago, it ran like a bat out of hell. The tires would spin/chirp when taking off all the time. Now a few months later i removed the charcoal filters and replaced the regular air filters with KN ones. Car still ran great. Now i recently replaced all 4 tires and for some reason when i stomp it and take off the tires wont chirp. And somehow the car feels a bit slugish like its lost some power. But it still runs great and fast. Not sure if im really used to it by now or what, but has anyone else experienced thsi as well? Also i was trying to find a replacement Charcoal filters and dealer doesnt sell them seperately (WTF) you have to order the top airbox lids in order to get another set.
So if anyone out there has a set they dont need or you would you mind selling it to me?

 

yes, and it all changed when i took it in for service !
also, having 4 passengers in the car as opposed to just you makes a HELL of a difference .. one more thing to note is that you might be getting more traction with the fresh rubber, and that sluggish feeling is u actually sticking to the ground, a difference i REALLY felt when i changed my rears from 255 to 275

 

hmm i left the tire sizes the same. but i dunno for some reason the take of isnt as quick as it used to be..maybe its just all in my head im so used to the car now.. 451hp feels kinda slow hahaha..

 

If your new tires aren't as sticky as the old tires then your traction control may be taking over and cutting power.

Try turning the traction control completely off and see how it goes.

 

i tried that too and still no wheel squealing. it just takes off..

 

i don't think i would be able to control my happiness if i could get mine to quit spinning and just take off . i'm spinning at a 40-50mph roll

 

what are your mods?

 

Get a tune )

 

Hah, beat me to it

 

Maybe because you have 4 new tires with much better traction?

 

Yea most likely could be..im gonna throw on the charcoal.filters and see if it goes back to normal.

 

Pretty sure your tires just hook more bro! Be happy, mine spin out when I floor it in 4th

 

Go the the track, see how fast you do the 1/4. That should answer any questions/

 

I'd say the same. You are probably just getting used to the power of your car and the new tires are probably helping you stick much better. Also are you starting in S mode when you floor it?

 

Usually M mode. With the traction off. Thats what i dont understand about it.. could be the stickier tires i guess. Because before i changed them they worn out pretty bad and the car would spin like a ****.

 

What were your old tires and what are your new ones?

 

Pirelli P Zero Nero All Season was on there before so i just replaced them with the same exact ones

 

Nobody mentioned the most obvious and likely answer? It's all in OP's head? Maybe he's just getting used to the accelerations? Or he drove another car with faster acceleration and the c63 felt relatively slower? Or like some have mentioned, it's the new tires. New tires have better traction so it starts gripping from the get go versus the sudden traction of wore out tires. I felt the same way transitioning from a 600cc 4 cylinder bike to a 6-odd 3 cylinder bike. Triple acceleration is smoother and starts pulling from low rpm versus the high rpm power band of fours. Even through the triple actually accelerate to speed quicker than the four, it didn't "felt" like it since it's smooth acceleration not the sudden one of the 600cc. Either way, your butt dyno isn't an very consistent metric. Take it to a dynamometer or drag strip.

 

I don't know how it could be anything other than this.

 

Well it turns out the car is fine. Sticky tires and warmer pavement it grips and goes more than chirping and spinning. Last night it was much cooler out, and i put the car in "Dyno Mode" and man talk about burning rubber LOL..It pulls and runs great.

 

How do you access dyno mode?

 

Youtube C63 Dyno Mode.

 

I wish I had my rubber in my rear tires. I was playing with the car in dyno mode, so much fun but I need to order new rear tires, or I'm gonna end up hydroplaning on the highway like last time lol

 

I could only find a bid for a W203.

 

https://mbworld.org/forums/s55-amg-s...-mode-s65.html