bhvrdr

Hi folks,

Just curious if anyone ever tried this little box and what the actual results were.

http://www.racechip.de/racechip-chip...21&language=en

cheers! Mike

kevink2

C250 CGI BlueEFFICIENCY

I think they meant CDI

bhvrdr

It looks like they quote the stock power numbers of the CGI engine precisely so i'm thinking its not an error. (204PS and 310Nm)

cheers! Mike

Petje

Kaewen has one if i am right. But if you Google racechip you see lot of probs with them.

Kaewen

yup.. its for the CGI engines..
i had mine on and it gave me an approximate +10% increase in HP and torque
Had it dynoed before and after.

Had mine in for 2 months now and here is my feedback.
The chip does give you more ummmph to the car.
I installed the chip and did a TCU reset. Shortly after driving it, my CEL light came on. Brought it into the dealer (without the chip) and they found out that the mixture in bank 1 was too lean. they reset the CEL.

After a week, decided to put the chip on again, but this time on a lower setting. I particularly like the extra torque when the turbo kicks in around 3000 rpm. Then after a few days, I slowly bump up the settings one tick at a time. So far, after almost 10000km, I did not have the CEL light come on again.

However, the car does feel jerky and you have to get use to driving it differently. I guess the TCU wasn't programmed for the extra torque and HP. I will be removing the chip in the next couple of days as my 15000km service is coming up soon and I have to send the car in.

So to summarize, you do get and increase in HP and torque, but it till be jerky as your TCU and ECU will be fighting to make sense of the added torque and HP.

Knightmare69

No They meant CGI as in Europe and Asia we're offered both.

tjk

Hi there!
I do have the race chip pro and playing with setting now. The default settings I had were C and 0.
It definitely gives some power, but so far the tests i did with dynolicious don't tell much.
Fuel consumption went up, of course.

Any experience with manual settings?

kevink2

Read posts 3 and 5, it's clear then that they did mean CGI.

"20 yards penalty for piling on"

.

Nikirfan2

Hey there, I'm driving a 250 cgi n I've installed racechip ultimate. The engine light is on.. Need help!

Knightmare69

Is yours adjustable like the regular racechip? If so then lower the setting and see if you still get it.

Nikirfan2

I'll try n do that . Thanks!

Nikirfan2

My setting on the chip now is 9:1 but the engine light is still on.. The original setting was B:1. Need help!

Knightmare69

Id take it off and see if the light goes away. At the same time, seems you're using a different program from the OP so id contact race chip and ask them for advice.

kevink2

Other options of interest:

http://www.kleemann.dk/Performance/E...250CGI_M271EVO

max = 255 hp, 285 ft-lbs ?? cost ?? This shows what the turbo is capable or .. for a while.


-review-jb-beta-tune-c250.html

Burger Tuning "juice box" $390 +40 ft-lbs +8 hp Mostly great reviews

.

Knightmare69

There was a thread on the BMS boxes causing overboost on some cars out of the box a while back.

mazlimukti1

How did the engine light go off, did you have to visit merc dealer to
Reset or was it due to other engine problems ?

mazlimukti1

How did the engine light go off, did you have to visit merc dealer to
Reset or was it due to other engine problems ?

Kaewen

the engine light went off and i brought it to the dealer.. (after taking out the piggy)
he just reset the light and everything went back to normal.

but after almost a year of using it, i got a fuel pump failure, which was replaced under warranty.

what i figure is that the fuel pump is overworked trying to get the mixture correct due to the extra air from the turbo.. and gave up after some time.

Acapulco Bill

Kaewen erroneously keeps referring to a "TCU" reset. How we all wish it were true!!!. To empty out all that stupid Adaptive Learning Little-Old-Lady data (Adaptive Learning remembers you are a "LOL" at every stop sign, traffic light or traffic jam, FOREVER) in the 8 memory cells and get some REAL shifting, not the washing-machine-like lethargic activity of the 7G Tronic.

What Kaewen refers to is an accelerator pedal recalibration or reset with the ignition switch-pedal down-swith off routine. (I do mine half-way down) PLEASE. This Forum is supposed to promote accurate and truthful information and opinion, and generate a culture of quality informed owner/enthusiasts.

If someone can actually show us how to reset the TCU, thousands of 7G Trashy-Tronic owners of EVERY Class of Benz would be eternally grateful. Thank you.

Acapulco Bill

The fuel pump, understanding as these things work, tries to provide a constant 35 PSI (if I remember correctly). Higher current is required to maintain the pressure at low to medium output than at full output, owing to the pump "stall" and back-pressure when the injectors don't require much gasoline.

If you use TorquePro with a OBDII Bluetooth transmitter, you would see that a typical gasoline engine uses only a very small percentage of its capacity most of the time. The pump is not delivering much fuel under optimal conditions, and having the plastic/nylon/teflon pump impellers churning around when no fuel is required, can cause more stress than at full tilt. However fuel pumps are generally up to the job and are both reliable and durable.

Kaewen, your pump probably failed for reasons other than the add-on chip requiring more fuel. This should not deter others from acquiring a performance chip if they wish.

Acapulco Bill

Actually Post #20 may be entinrely in error, as when I replace the TWO fuel pumps in my V12 (one for each 6-cylinder bank so that if one failed, limp-home mode was available), the system constantly pumped the same volume of fuel, excess liquid being drained off via a bleed valve.

In this case the pumps ALWAYS worked and pumped with the same effort, at idle or at full throttle, as the same amount of fuel was always passing through the pump.

I am therefore not sure if the W204 fuel pump uses the same constant-volume system. In any case, it is doubtful that a fuel pump failure would have any origin because of this add-on chip.

Kaewen

Hi Bill,

Sorry if i gave the wrong info. I read it somewhere in this forum that it was a TCU reset... which now i know is not true. Think i found it in the eclass forums.

I am pretty happy with the reaction time after every reset though.
Now I'm moving on with a E300 so I can't do much modding on the ECU as it is still under warranty.. Though i'm looking for a E350 ECU to see if it can be used in my car as a E300 is a de-tuned version of the E350...

Acapulco Bill

Yes, MANY new C300 4Matic owners are anxious to find a reasonable way to restore the ECU tune to C350 levels. I have seen some C350 tunes that give nearly 350 HP. Disappointing that MB charges $6,000 USD less for what is generally believed to be purely an ECU downgrade from the 3.5L W276 engine.

Hopefully serious performance experts such as Kleemann, Weistec, Brabus, Lorinser and others come to the rescue of the C300 4Matic and provide a $1,000 USD tune that would save all potential C350 4Matic buyers $5,000 USD.

Please let us all know your success, as you are in Brunei you will have to ship out your ECU to get it done, purchasing an E350 ECU may not provide all the solution as other components vital to engine performance may also have been changed, as MB does some weird mods for international markets.