skratch77

Its bigger I looked at the side by side in person.

Celicasaur

Without a shadow of a doubt, the Carbonio is nothing more than an engine dress up piece, ie it does nothing that the stock boxes can't do. The ~2mph from the RENNtech is not too far off from what headers do for an M156. Hell, I'd have gotten a set of them if I didn't decide to give up on the car. Carbonio might be lighter on the wallet as a purchase, but you can also liken it to throwing your money away also, which makes the RENNtech a bit of a bargain.

Man, you guys are making me want to get another 63 AMG.

BLKROKT

Agree with Celica. I’ve had stock, ROWs, Carbonio and now RENNtech. The Carbonios are roughly equivalent to ROWs, barely perceptible performance increase. The RENNtech intake actually works, entirely due to the shape and size of the Y pipe. The size of the boxes makes zero difference.

juggernaut1

Fella's,

I happened across a thread on the intake spacers mod, (amongst other mods). The blue dyno is with the spacers and adds almost 5 rwhp at best and what appears to be only over a narrow part of the rev range. This was one of the earlier mods, so "perhaps" it may have contributed more as the other mods were added



Link to original thread: https://mbworld.org/forums/c63-amg-w...-progress.html

Celicasaur

Screw it, somebody give me $200USD and I'll ship my old spacers out for you next week.

Justin9212

I wish I had read this completely before scamming myself by buying these. Car ran like **** with them. Fitment is terrible. I would not recommend to anyone. Also the customer service was terrible in that they never even took the time to respond to me at all.

roadkillrob

I feel bad that you had got screwed on these, but I hope this will serve to help anyone else that sees this and avoids your situation.

roadkillrob

I find it funny their intake spacers have no reviews - write a review on them, bet it gets deleted - shady company they should be ashamed for scamming people on the spacers, they do have some good products, but selling **** like this just to make 100 bucks and not even responding to you makes me happy to take business elsewhere, was thinking about a pulley kit but will look elsewhere now - whatever they scammed you out of they will loose on selling me a pulley kit now.

Jasonoff

In UPD's defense, their toe and camber arms are excellent and the customer service was as well.

roadkillrob

Fair enough, they do have many decent products so not sure why making 100 bucks on some crap plastic spacers is worth ruining their brand over. They should make it right for their customer and stop peddling a poor product, I am sure the bad publicity on this forum alone will negate all the profits on those spacers.

sirius9

Wouldnt buy their Billet Pulley kit if yours is EU or RHD car.
To date, I have had no reply and Paypal claim was unsuccessful despite multiple pics taken and proof of item not fitting well.
Chalked it down to poor experience and wanting to save a bit of money. I have now purchased the Weistec ones which fits well.