sultanC36

hello ladies and gents

like i said you before that i will get a tune for my car and have is dynoed (Dynolog ) load base dyno to see were i am and what gains will i get form a before and after runs.

here are the videos of all the runs and also for 2 different flashes (maps) for my C55 from www.viezu.com

these are the parameters that the dyno session was done in

http://www.youtube.com/watch?v=pubiD_58yoQ

my 1st stock dyno run , with no cool down time

http://www.youtube.com/watch?v=pdaAczD1tyM

2nd stock run no cool down time

http://www.youtube.com/watch?v=m0HM5uGoTLg

1st dyno run re flash

http://www.youtube.com/watch?v=s1xyA1Ty370

2nd dyno run same reflashed map

http://www.youtube.com/watch?v=J0T81UYnRYc

dyno run very aggressive , as quoted by the tuning company gave me the same WHP as my stock tune 285WHP

http://www.youtube.com/watch?v=SYv2LHVGdlI

finally decided to go back to my stock tune and did a last run

guss what , ????? 285WHP again

alroumi

Try Kleemann

alroumi

If you dont want a supercharger you can get the Brabus B55S kit (not sure if they still make it) basically its an Ecu upgrade, valve springs, aggressive cam good for 390 ish hp

doom239

Did you end up paying for that tune???

Newzchspy

Can't say I told you so!!!

TemjinX2

damn sorry to hear. Even honda engines can get 10whp from a tune. Maybe do the long tube headers first then a tune.

Newzchspy

Fact is, many have said that tunes on the C55 do NOT work. I remember a few years back at Morrocco that LET was doing C55 tunes and they were not working too well at that time. Don't believe that anything has changed since that time.

It does beg the question, if they ARE tuning C55s, what parameters are they tuning for?? I know what they do for C32/E55s and even the C63, BUT the C55???

TemjinX2

Its just advancing the timing and dumping in more fuel. its not rocket science. Its going to be the same for all petro based cars. Only difference between MB and other cars is its more difficult to access the software in the MB ECU.

If it was open or a real stand alone ecu like japanese cars, you can just tune it yourself with a $25 obdii data cable and laptop like evo's.

Either MB already maxed out the car with the stock hardware or the tune he recieved wasn't aggressive enough.

Car manufacturers usually tune there cars for reliability and emissions thats why you see evos getting 30whp on a tune with stock hardware and even honda k20's getting 10-15whp on just a straight tune.

Newzchspy

** Dumping in MORE fuel is not always the solution, unless its an FI engine where you're trying to prevent it from grenading. Kleemann SC'd cars are famous for fuel dumping at around 3000 RPM and it is known that they lose HP due to that, BUT its for a reason to keep it from blowing!!

Temjin, OT, but do you know if an 07 Accord V-6 3.0 can be tuned and what are results??

TemjinX2

the honda v6 is junk. That engine is like a 20yr old design, all they do is keep boring it out to increase the power and there auto tranny is glass. You can actually get more power out of the i4 in the 07 accord, the k24.

The K series is a much stronger engine and a newer design, with a stronger tranny.

You just do a k20 head swap and internals with a kpro and you can get 300whp NA or you can just turbo the stock engine and get 300-350whp.

Some people even did 400whp-450whp on a stock k20 si motor and a kpro ecu.

RLx02

:shrug: At the dyno meet a fellow poster, clk55 owner put a base line of 305hp down and at the same dyno I put 315hp down with an LET tune and deleted secondaries...and deleting secondaries from what I remember, doesn't really free up much hp.

To the OP, headers are the way to go for more power. I went to reflash my tune for kleemanns and added kleemann headers and dynoed at 337hp on a dynojet.

superstar

Get a nice set of headers, and these numbers will change dramatically.

sultanC36

hey you all, firstly , yes i got my money back but i lost the dyno money because its an independent dyno shop not the same as the tuners shop , secondly i have been tuning my own cars for the last 6 years or so from evo's with 420whp to corvettes with 800WHP most of the N/A motors love to run at WOT and an AFR of 12.8 to 12.6 of so and that is were they do the most power with some timing advance but for sure keeping in mined to keep it safe and to stay out of knock so it dose not go boom but the tune i got kept on dumping more fuel even there is one run we did previously but not recorded on video that was supposed to be very lean and on this one it was still at 11.9 AFR still to rich , these AMG cars come from the factory with a tune that keeps the AFR at a constant 11.2 to 11.3 AFR for reliability and long life but not for maximum power , thus maybe if some one can adjust the AFR to the sweet spot of 12.4 or so will gain some actual power from the tune but that is a guss tell i try it , thirdly regarding the tune from this company on hand here it seems most that they do is adjust the throttle response make it sharper and delete the transmission adaptation logic and that is y allot of people get tricked in believing that the car is more powerful and is making more power.

this is my own point of view maybe i am wrong maybe i am rite i am sure so many of our friends and tuners can chime in and explain or shed some light on the subject.

PS. Kleemann headers are in the pipe line and in the plan its all a mater of time

sorry for the bad spelling English is not my first language

RLx02

No worries, thats all good! Have you thought of going MBH headers? I think they have the only long tube headers for the C55....AMS has shorties and kleemann has mid length...and they all increase in price as they get longer lol.

superstar

Size does matter!

Sonny@Marranos

We are doing devolpement on the c55,this vehicle is a hard to car to get power from,x pipe wont work in a c55,nor removing the rear resonators,they actually flow well,The key in the c55 exhaust is maintaining exhaust gas velocity thru the pipes while freeing up gases.Loss of exhaust gas velocity,results in loss of power and a very lazy throttle.The c55 has some improvements in the intake side as well as the exhaust side along with some re mapping defantly nets some power,mid range throttle becomes real agressive easily lighting the wheels up at 1 /4 throttle.I will do a thread once i finish the developement.Just a note,your car was ramped up at 10km/persec,A c55 being a v8 should be at least ramped up at 12km/persec minimuim.


regards sonny

sultanC36

sonny
thanks for posting , i cant wait to see what you get from that C55 you have in your hand please keep us posted

wawy

"The key in the c55 exhaust is maintaining exhaust gas velocity thru the pipes while freeing up gases.Loss of exhaust gas velocity,results in loss of power and a very lazy throttle" +1 on the "lazy throttle" results when doing some exhaust changes....


"The c55 has some improvements in the intake side as well..." Yes, it does - as proven by the independent testing and dyno results myself and others have shown with the Renntech airbox.

AMS Performance

Try Speedtuningusa.com their tunes produce double digit gains, no name tuners are to be avoided.

With that said, unless you have headers & high flow cats on C55, don't expect too much from a tune. Those are the two biggest bottlenecks on the car.

TemjinX2

agreed, i made the most power at around 12.5 afr as well.

AMS Performance

12.1-12.5 is the sweet spot, anything lower is too rich. below 13.1 is acceptable, above 13.1 and you are starting to run a bit too lean.

Sonny@Marranos

Thats right omey,if you wanted to be spot on ,the sweetest spot for c55 is 12.55:1 after 4000rpm,below that rpm they like something different,its a matter of keeping the cylinder pressure in control and getting ur ignition timing correct,basically most best timing.


regards sonny