CLK-Class (W208) 1998-2002: CLK 200, CLK 230K, CLK 320, CLK 430 [Coupes & Cabriolets]

i m thinking of getting Renntech ECU done on my CLK320 what you guys think ?

Old Nov 18, 2002 | 11:54 PM
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CLK320
i m thinking of getting Renntech ECU done on my CLK320 what you guys think ?

i want to get my ECU remap by Renntech soon, what you guys think about it ? anyone done if before ??
do ECU remapping help a lot ? would the car feel more powerful and pick up speed faster ?

i know ppl on the fourm talk about this before but hope you guys can give me some more informantion thanx !
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Old Nov 19, 2002 | 12:30 AM
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get it and u will know the answer...renntech make a good ECU...
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Old Nov 19, 2002 | 02:44 AM
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hahah thanx dronellis
but i m still a student need to spend the money wisely
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Old Nov 19, 2002 | 03:16 AM
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Tery, you can get 13 hp at the wheels with our underdrive pulleys, which do not change the way the engine runs. At $499, that's $38 per wheel HP (apprx 15HP at crank).
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Old Nov 19, 2002 | 04:54 AM
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CLK320
thanx mach430 but i want to add both
what would the gain be if i add both ? should i add the pulley first then the ECU or it dosen't matter ?
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Old Nov 19, 2002 | 09:52 AM
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ECU upgrades in my opinion dont really do much. Chipping a corvette is different than upgrading the ECU in your Mercedes. From what i have been told, the ECU adjusts to driving style and adapts to many different things. For instance, I dont believe Ben had his ECU remapped when he added his Kleemann. No need...the ECU made all necessary adjustments anyway. Therefore, i think upgrading the ECU will give you very minimal gains in real, to the wheel, horsepower...just my $.02...
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Old Nov 19, 2002 | 11:50 AM
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True, I actually had to make sure that my ECU was completely reset to stock before having the Kleemann SC installed, as it requires the ECU to adjust naturally. I have no experience with Renntech's ECU upgrade, but every other one I have tried for the MB has been futile, one with potentially disastrous effects (it's not fun to see your car start up with several misfires, eventually stalling).
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Old Nov 19, 2002 | 06:06 PM
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but if i add the pully and the ECU what would the gain be ?? which one should i add first ?
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Old Nov 19, 2002 | 06:14 PM
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Originally posted by tery
but if i add the pully and the ECU what would the gain be ?? which one should i add first ?
um, well i have the pulleys, youre good for 15 at the crank there, the ECU, maybe youll gain 15, maybe youll gain 2, maybe your car will run on half its cylinders (like Bens did)....i think any product where the gains vary from car to car that are IDENTICAL is a mod to be weary of. Just as a rule of thumb, take whatever number RennTech claims as the gains from the ECU upgrade, and divide it in half because they also add an intake for testing...RennTechs numbers never seem to match up to their claims......
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Old Nov 19, 2002 | 07:44 PM
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Our UD Pulleys are independent of any other performance mod, so neither the ECU nor the pulleys will benefit (or hurt) eachother's performance. I would recommend installing them both at seperate times, so you can get a feel for what each modification adds to your car.
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Old Nov 19, 2002 | 07:49 PM
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how much is the evosport underpully?and how many HP it will gain?
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Old Nov 19, 2002 | 07:53 PM
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Originally posted by dronellis
how much is the evosport underpully?and how many HP it will gain?
$499 + one hour install time, and once again, 15 hp to the crank, 13 to the wheels......
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Old Nov 19, 2002 | 08:00 PM
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Originally posted by Petie
$499 + one hour install time, and once again, 15 hp to the crank, 13 to the wheels......
Such a good deal ! Get it !

-Bruce
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Old Nov 19, 2002 | 08:20 PM
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nah IM seling my car right now....hahahha but if somebody want to sponsor me, Ill say HELL YAA!!! hahah:p
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Old Nov 19, 2002 | 09:00 PM
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Originally posted by dronellis
nah IM seling my car right now....hahahha but if somebody want to sponsor me, Ill say HELL YAA!!! hahah:p
I saw your car in eBay. Good luck in selling your car.
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Old Nov 19, 2002 | 09:06 PM
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CLK320
Mach430 can you tell me the gain if add two
pully 15hp
ECU, airbox, muffler, Renntech said 245hp +15hp from pully is that right ? what other engine mod can i do ?? beside SC the engine ??
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Old Nov 19, 2002 | 09:43 PM
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Originally posted by tery
Mach430 can you tell me the gain if add two
pully 15hp
ECU, airbox, muffler, Renntech said 245hp +15hp from pully is that right ? what other engine mod can i do ?? beside SC the engine ??
Dude tell me when u get both, I want to make my car faster too. You can get custom headers and intake, catback exhaust and straight pipe. Evosport will have custom intake for CLK very soon, just wait!

-Bruce
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Old Nov 19, 2002 | 10:02 PM
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Originally posted by tery
Mach430 can you tell me the gain if add two
pully 15hp
ECU, airbox, muffler, Renntech said 245hp +15hp from pully is that right ? what other engine mod can i do ?? beside SC the engine ??
I would recommend getting a baseline (stock) dyno of your car. Then add our pulleys and get another dyno (you'll see 13HP at the wheels). Then get Renntech's mods if you want, and dyno the car again. I have no numbers on their products, I have only heard from customers.
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Old Nov 19, 2002 | 11:13 PM
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...Since the pulleys produce the most power in 1st and decrease incrementally thru the higher gears, is it safe to assume that we will not notice much punching it on the highway? Is it really possible to feel the difference from 13 HP in first? Finally, since the gains were from a dyno on a 320....should the 430 realize even more gains?
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Old Nov 19, 2002 | 11:25 PM
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The gains are throughout the powerband. Ask Petie or BrabusCClass. The accessories on the V6 and V8 engines are the same, and require the same power to be driven. Expect the same gains on all MB engines. Lastly, 13hp in 1st gear is much easier to feel than 13HP up top (percentage wise).
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Old Nov 20, 2002 | 12:01 AM
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pm'd you tery
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Old Nov 20, 2002 | 12:30 AM
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hey tery, i have been thinking about doing the same thing. But hearing so many positives and so many negatives for everything mod that increases HP...I decided to keep the engine stock. Let us know how everything goes, and what you decide on.
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Old Nov 20, 2002 | 01:06 AM
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i think i will do both, but jsut not sure about will that do anything bad to my engine.
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Old Nov 20, 2002 | 01:36 AM
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///M3
Originally posted by Mach430
Our UD Pulleys are independent of any other performance mod, so neither the ECU nor the pulleys will benefit (or hurt) eachother's performance. I would recommend installing them both at seperate times, so you can get a feel for what each modification adds to your car.
Ben, is the pulley available only for 430 or 320 too? Thanks.
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Old Nov 20, 2002 | 02:28 AM
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The pulleys are available for any naturally aspirated V6 or V8 Mercedes engine from 1998 and on. They do not affect the way the engine runs, and the crank pulley is left unchanged.
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