Gary

Has anybody installed the pulley / chip mod yet?
If so can you post thoughts / impressions on the performance of the car with the mods.

greg230

please do!

i want to know how the dynosport racing one performs, since it removes the magnetic clutch.

greg

Pffelan

does a c230k actually have a magnetic clutch... im sure i read somewhere that the 2001/02 cars do not have it?

thus do you need a different kit for a c230k than for a clk /slk?

Buellwinkle

There's no magnetic clutch. That went out in 99. That's what scares me about their product. They have a SLK230 kit they'll thrown on your C230 if you let them but I don't believe they've done it yet. I still think the Wetteraur kit sounds more believable.

Lynn

I have heard that the Wetteraur kit has a dead spot from 3000rpm to 3500 rpm due to over pressure. Does anyone know for sure?

roozy21

so i can get 2-3+ pounds of boost...i have a C32 AMG ...any companies or has anyone changed their pulleys? ..i talked to BRABUS they are coming out with a WHOLE new engine/sc and i can't just get the pulleys..

greg230

you have a fancy pants helical supercharger, we c230 folks have normal roots type blowers

greg

Pffelan

has anyone, anywhere sucessfully fit a pulley kit to a c230k yet?

I would really like to know before i spend/waste lots of money?

eddie

I'm pretty sure that changing the supercharger pulley in this car would decrease performance unless you also change the engine maps.

The computer would see the extra boost and not only decrease the boost, but also trigger the MIL.

linh

Eddie....wrong !!! Factory never run any spec. at the max...therefore the computor still have a alot room for adjustment. With only 2-3 psi more boost, the computor will sense more air coming then deliever more to match it. KLEEMANN supercharger kit for Clk 430 and 320 does not require ECU upgrade. So just 2-3 psi won't do no harm.

eddie

Not to be pessimistic, but I don't agree with you. Just because you can add a supercharger to an engine that doesn't have one, without changing the ECU firmware, doesn't mean you can change the dynamics of a supercharger which is already programmed in. Those are two entirely different scenarios.

Also, I'm not suggesting that you can't add a few PSI, as I know any manufacturer would not produce a unit running anywhere near 100% capacity.

What will happen is when you step on the gas the ECU will request a given amount of charge pressure, for example let's say 5 psi. Because of the aftermarket pulley, the supercharger will produce let's say 7 psi, and when the ECU sees that the actual boost is greater than the requested boost, it will lower the amount of requested boost, and thus lower the amount of current going to the supercharger motor. Doesn't that make sense?

I must admit I am not an expert on forced induction systems, but this is an educated guess coming from the owner of both a supercharged car and a tuned twin-turbo car.

linh

eddie,

What you are saying make alot sense. We both agree on that Factory never run anything at MAX SPEC. To my understanding on Supercharger/Turbo cars is that even those they design the pulley to only produce (let just say 14 psi). We all know that same time depending on the weather specially at night when the air is much denser, supercharger/turbo do get over boost. Usually 1-2 psi over, because of this over boost problem, they take that into considering and program the ECU to provide enough fuel and timing up to 16 psi. If anything over 16 psi, they also program in a safety feature called Electronic Fuel Cut Defense. The ECU will automatic retard the timing and fuel when it sense that the supercharger/turbo is providing more then 16 psi (almost like when you RED LINE the engine). Now the aftermarket company know about this, so they decided that to make the pulley smaller to spin faster. This will produce 1-2 psi higher then factory which in turn will give an additional 25-30 hp. This is fine, but now you just made all the parts like injector, fuel pump, fuel pressure regulator...etc to run at the max. Now you will have problem with reliability.

vadim

This is incorrect. No overboost - the ECU senses the boost pressure and bleeds anything that exceeds the specs by opening wastegate or bypass valve etc. As a result, super- and turbocharged engines' performance is less subject to the barometric pressure. At high altitudes they are absolute winners over N/A engines that are equal or even stronger at sea level. Same goes about day/night changes.

So just installing a pulley alone won't make much sense, the ECU will squash the overboost anyway. Only chipping helps that changes mappings (including air/fuel, of course) and actually lets the engine run at higher boost than stock.

renncpe

I have installed a pulley kit and cat back exhaust system on my 2002 C230K. I’m waiting on the chip modifications. I recommend it to any one that is looking for more power and performance. Recent dyno provided 221 hp and 250 ft/lbs tq. (With exhaust modifications).[IMG]

https://mbworld.org/upload/2001/renncpe.jpg[/IMG]

vadim

renn--

Since the exhaust mod alone couldn't possibly make this much of an improvement - that's pretty impressive! Was that sustained hp/tq or just a short burst that was dynoed? My previous post was based on the assumption that the ECU measures actual boost pressure... If the pulley (w/o a chip) makes this kind of HP/Tq increase, then the ECU mappings in the 230K must be based on the RPMs?..

Could you provide some info on brand(s) and dealer(s) ?

How do you like the results?

Thanks!

Lynn

vadim, based on his name, I believe it is Renntech Mercedes. I think it is his car in the pics on the web site.

http://www.renntechmercedes.com/

vadim

Thanks, Lynn!

renncpe

Reading are from 3rd gear and peek hp and torque. I called and asked about maping, there are several factors involved, including rpm,boost and air density.

I'm waiting on parts for more modifcations so far this is the most fun I have had building up a car. I love the way the car handles and feels, and if you like the sound off the supercharger it's much more pronounced with the kit.

Modifications:

Engine:
RENNtech larger crankshaft pulley kit
High performance air filter
RENNtech exhaust
Suspension:
RENNtech/Apex springs
Brakes:
RENNtech/Brembo 14” four piston front *
RENNtech/Brembo 12” four piston rear *
Wheels:
Front RENNtech Monolite forged 8.5 x 18”
Rear RENNtech Monolite forged 9 x 18”
Tires:
Pirelli P zero rosso
Front 235/40 ZR 18
Rear 255/35 ZR 18
Transmission:
Short throw shifter
MISC:
3- pc RENNtech custom spoiler

renncpe

You are correct about the Tuner being Renntech, there are some pictures of my car on there web site.

thanks

Randy >>>renncpe