Nathan Pitt

Will remapping my clk55 be noticeable? Some say a n/a engine is pointless and others tell me the 55 still has a bit to give if tuned to 99 Ron fuel? I've also removed my secondary cats and am considering a rear box change if that'd make any difference.

SavMan

We just had the guys from Eurocharged visit the UK and tune approx 20 AMG's, we had 3 C55 N/A. Main difference was torque which jumped 40 lb ft, average HP gain was 25 bhp. These are adjusted flywheel not wheel figures but on a very conservative dyno. Most of the 55 N/A have posted positive results from the map.

Nathan Pitt

Wow. 40 torques and 25hp! That must be pretty noticeable when driving. Any of the people with the n/a engines on here to comment?

SavMan

Not sure if they are members on here, it was organised through a UK MB forum. Will see if I can get there graphs for you.

Nathan Pitt

Thanks savman. Sounds promising and probably worth the money from what you say. I.dont expect a massive change but the map on my m3 wasn't particularly impressive. I just wanna get my 55 faster than the m3 before I let the m3 go!

TTA850

I never tuned my car but always felt like my CLK was being held back by the computer at lower rpm, compared to my E55 which was rated 391tq at 3000rpm vs 376tq at 4000rpm for the CLK. The tuners I spoke to all claimed around 400tq at 3000rpm after tuning which IMO would be worth every penny giving the car back the low end that was taken from it.

Nathan Pitt

That's a really good point. I suppose that where you can access the power is just as noticeable/important as how much you can gain. I think I'm sold!

Any other opinions still welcomed though.

Silber55

After intake, exhaust and dyno tune ($$$$), my torque went from 510Nm to 618Nm or approx 80 lb ft.

legofc

What intake and exhaust do u have installed on your car ?? I have a clk55 amg A209, and i was thinking of of installing kleemann headers and cams before getting the tune, the intake thing seemed to be a bad decision cost wise for the gains you get, but your gains seem to be a lot from an intake and exhaust only.

Silber55

No need for those expensive aftermarket intakes. I have the standard airbox with the inner air tracks/fins (except for the centre one) removed with a die grinder. You end up with increased volume and less restriction and better throttle response.

My exhaust is the factory setup with 2 of the 4 catalytic convertors and the centre resonator removed.

Both the above mods were cheap and gave reasonable gains but it was the expensive dyno tuning that produced the big gains.

GatorMB

The intake seems to be where we can get full power from the engine. The 208 has the twin intake plenum with actuator for city/WOT events, I have seen some good posts on all out racing by removing the valve all together.
I am not sure about the 209 though, same setup ?
The exhaust is tuned from the factory for all types of driving, modifying it might create some daily drivability issues for some I suppose.
Nitrous would be an easy additive to the mix and affordable. Has anyone tested the engine bottom end with multi staged nitrous kits? curious

Cheers, Gator

Nathan Pitt

Are there any threads regarding w209 intake modifications? If not is it worth starting one?

Nathan Pitt

Can you post any sound clips of your engine? Is there any chance removing these fins can ***** anything up on a w209 clk55?

GatorMB

If you have removed the cats and the primary muffler, the next mod is headers and intake.(silber55)
I have never done this on a Benz but anytime you open up the exhaust, It is time for an intake adjustment.
Headers are a whole forum in itself. Primary tube length and diameter, Collector length and diameter are very important. tubing coatings, insulation, and other factors.
I used to race drag and circle track just having some streetable fun with mine for now, What do you want to do with this car?

Cheers, Gator

Nathan Pitt

I just want a fast daily driver that sounds as good as it goes to be honest.

GatorMB

Noise man!!! I like it too
Anonymity can be a blessing at times. I would stay with stock exhaust manifolds and look at the cat. The cat does two things here besides being smog inspection legal.
The catalyst creates cleaner air and produces the proper amount of back pressure to produce off the line torque with the tall gear these cars come with.
If you start removing the cats the electronic engine tune will help as fuel trim curves are utilized to enhance combustion cycles more efficiently.

beware that when you remove the computer or battery your tune will be stock again. (theory).

I looked at eurocharge service from another thread and contacted them on VPN services but I opted out. I am not after more than the car is doing now for now, so to speak.

I enjoy idling from light to light and blasting on a free run leaving everyone in (supercar?) WTF. Backroad twisties turning a turnabout into a straight line playground.

The Electronic tune will work good if you open up the exhaust.
Consult with them first!

Cheers, Gator

Silber55

I could probably scrounge a quality camera with a good mic to do the sound justice, just have to wait until I come off shift.

I can't speak for W209 but for my W208, it was certainly worthwhile removing the fins in conjuction with the exhaust mod.

Silber55

Taken on a work camera. I had to reduce the file size due to the upload timing out. The engine whine is more noticeable since the airbox mod.

astamir

hi mate sounds good
noticed an led tail lights on yours just wondering are they any good nave you had any problems with them and a link where to get them would be very much appreciated
thanks

FFXF1

My experience was not so impressive. Forget the tq, but only 2hp gain at the wheels. Despite the lackluster gains I've noticed a significant increase in throttle response. Enough to say it was worth it.

Next up - trying to see if I can work a deal on a Kleemann blower.

MouTine

Talking about exhausts... Heres mine. Kleemann headers & ECU tune and center resonator removed.

astamir

any pics of your airbox with those air tracks removed please?
thanks

Richard75

Hi guys,
Very interesting thread going on here
I'm also looking for some performance and sound improvements on my CLK55 208 as well, I'm still thinking about what do do !?
I really love that car even though I have always been a little bit dissapointed on having a 5.5 V8 with such a quiet low exhaust sound !!
I was thinking about some Kleemann headers and then a mechanic told me that it might not be a good idea to replace the headers on a 12 years old car with 58K miles on it, as I'm not a mechanic myself, I don't know what to think !?
Kleemann headers / Remapping with labor is very expensive and I'm not even sure to be really be satisfy with it...
I had also looked at replacing the muffler on it and put a GT HAUS Meisterschaft GT racing exhaust but I couldn't find any one that has done it on a CLK55 in order to have a real good idea / feedback on the improvement and also if the sound is good and not too loud especially if driving the car in town !?
I'm also looking at putting on a Renntech carbon airbox even though the performance gain and sound improvement are very limited with that...
So far, I'm keeping my CLK55 stock and I'm still thinking about what would be the best thing to do
Looking forward to read your comments

blackbenzz

If all you want is better sound put an Eisenmann muffler on it.

MagmaRed55

I agree. The sound from the Eisenmann is great.