OZAMG

Hi Guys,

I am new to the C32. Only had it 4-5 weeks. I am interested in installing a pulley but do not know which one to choose. I use the car as a daily driver and do not want to an adverse effect on reliabilty.

I am looking for a pulley only as I use 98 RON fuel. I have spoken to Powerchip who are Australian based and they can re-program the ECU for the pulley and 98 RON fuel.

c32used

THERE ARE ALOT OF OPTIONS HERE BUT NOT POSITIVE IF IT WORKS WELL WITH THE GAS YOU PUT IN:

1. ASP PULLEYS
2. KLEEMAN
3. RENNTECH
4. LET-LEADING EDGE TECHNOLOGIES

AS FOR SOFTWARE HERE ARE THE ONES I HEARD OF:

1. KLEEMAN
2. POWER CHIP
3. RENNTECH
4. FIND CUSTON TUNING SHOP.

OZAMG

Thanks for the info c32used

Does LET have a web site? These pulleys seem to make a considerable differnce in boost? 14.3psi is high for a factory car.

c32used

I know the info is in one of the threads by AMG-Jerry or 1FASTC32 about the LET pulleys. I believe I heard that the oem SC pulley already creates over 17psi but don't quote me ok.

Crazy Fog

I may be wrong but I thought that the stock boost was 14.5psi, with a pulley it get bumped to 17.5psi. then with the LET pully it get bumped to 20-20.5 psi

c32used

Thats why I said don't quote me cause I really don't know. But he can do a search and find out.

Sidez

"where can we purcahse the let pulley?"

http://letmotorsports.com/

sales@eurocharged.com

Shoot an email to sales@letmotorsports.com. I know they are just getting the website up.

SilverBulletAMG

Anyone know the hp claims by LET with their pulley and ECU tune? 20 lbs of boost is insane! I know we have low compression and all, but...wow!

OZAMG

Thanks for the info Guys.

the LET pulley will most likely be out of the question as I am not upgrading the ECU yet. I will be looking onto the possibility of running an aftermarket MOTEC ECU but need to do some more research.

Does any one know how the C32 controls boost? I have heard it does not have a bypass.

Has anyone got a boost map for the standard car?

thanks

AMGSC

What happened to Evosport pully kits? Too bad they don't make one for the C55, especially one that's supercharged.

FrankW

nothing happened. c32used just didn't list'em.

custom ECU there's also SpeedInnovation.

FrankW

supercharger boost is mechanically driven by pulley. you can't adjust it like you can on a turbo with bypass.

OZAMG

Hi FrankW

This is my 1st SC car had many turbos so please excuse if this is a stupid question. How is the boost regulated. If boost is directly related to pulley size this means boost will increase in direct proportion to engine RPM.

Has anyone maped the boost curve?

cheers Warren

c32used

Yes sorry I 4got to mention Evosport. Certain members like AMG-Jerry, JGSX, 1FastC32 R among those who put extensive time and trial with their cars so try to PM them about it.

Sidez

I am also intrested in this...

and AMG Jerry my posting of the site ment that I was answering someone elses question, but thanks man

neihouma

AMGSC

I just purchased an AMS Dampened/Lightened Crankshaft pully for $499 at a special discounted price. Combined with the VRP UNDERDRIVE pulley for $260, I think it's a bargain with excellent reviews of power and reliability by fellow members. Total pulley combo comes out to only $800 including taxes and shipping.

c32used

I never heard of them. Can you list a weblink please?

SilverBulletAMG

Just did a quick google search and came up with this site ---> http://www.abedinmotorsports.com/ I believe that is the company he is referring too. It just lists the pulley for the C55 and then another for "all other". What size did you get? I assume you wanted to gain boost as you would with ASP and other pulley kits and weren't just looking to take advantage of the claimed reduction in mass and whatnot?

$800 total is a smoke'n deal!

*EDIT* Ahh, just noticed he was driving a 55. Thought he had a 32...

c32used

I though pulleys were for SC engines not NA engines?

SilverBulletAMG

All vehicles use pulleys to run the belt to AC, alternator, etc. The ASM pulley is advertised as being lighter (reduced mass) which puts less stress on the engine = more hp/tq. They have a FAQ section on their site that explains in much more detail.

E55 PWR

They don't have C32 AMG pulleys out yet but they probably will soon im sure. They do also have E55K pulleys out. All cars have crank pulleys so you can really do it to any car really.

What differs about their E55K pulleys is they are stock diameter but still give substantial HP/TQ gains but also improved fuel efficiency and smoother revving as well as alot less headaches than an "overboost" pulley. Its all in the FAQ as mentioned

c32AMG-DTM

That's interesting... although I must say, without seeing before and after dyno figures from actual owners, I'm skeptical that you'd ever get "substantial HP/TQ gains" from a stock-size pulley - you wouldn't be increasing boost at all, so the only gain is from less parasitic drag (due to less pulley mass) ... which I would guess would be fairly modest. To make "substantial" gains with a forced-induction engine, you typically have to start increasing the boost pressure (and intake flow, exhaust flow, IC/HE capacity, etc etc.).

Improved fuel efficiency and smoother revving - I buy that, it makes sense... although again, I'd guess the increased mpg would be minor.

These are just educated guesses on my part though, YMMV obviously.

E55 PWR

The gains will obviously not be as much as overboost pulley but then again it isn't meant to be and the price is less than half of hte overboost pulleys. Also boost pulleys can give alot of headaches and etc. Mileage gains are typically 2-5mpg depending on car & mods. Gains for non-kompressor engines are roughly 10-15 HP, gains for kompressor pulleys are roughly 15-20. Not as much as say 50-75HP but then again the mileage gains alone means the pulley over time will pay for itself where as overboost pulleys will increase fuel consumption and gas costs even more, so its a tradeoff each owner has to decide for themselves.