Crankster

I installed the Dinan sport tune on my C300 yesterday and I got my first chance to test it this morning. The business park where I work has a few nice straights where you can do a nice standing stop launch. I can say without a doubt I can feel the difference in acceleration. One other thing it does seem that with the windows down the turbo is distinctly louder and I can now hear the diverter at gear changes.

As I have mentioned I have an R53 MINI with a 17% reduction and I would put this tune in line with the pulley in the MINI. Keeping in mind the pulley install took nearly 3 hours and coast with labor over $500, this is pretty good bang for the buck!

subzero05

nice- glad you like it!

zeroxstyle

The dyno sheet that was posted is the correct whp numbers? It states the c400 made 310 whp at base which seems incorrectly high when its rated at 329 at the crank according to Mercedes.

MASSC450

Mercedes Benz (like some other car companies) underrates some of their engines power.

For instance, this from RENNtech regarding their tune for the C450:

"Note: Mercedes M276 engine performance when measured obtains higher numbers that rated from factory."

https://www.renntechmercedes.com/ind...c450-bt-detail

subzero05

this type of thing has been going on forever. the muscle car era was notorious for this

l3it3r

So... there's like a 10mph difference in a drag...


Made this tonight. The launches in the side by side at the end are timed exactly to start at the same time. It took me like 10 minutes to line them up properly. I think I'll make a different video tomorrow if I get a chance

RTC450

At the dragstrip , let's go see!!!

Darrington

Installed mine tonight. I struggled to find a spot I liked where the unit was stable and the wires were clear, but not hanging. This is the best I found.

Super easy to connect the connectors. Setup the app, race mode...ready to go.

Went for a quick drive...it's dark and wet out, so didn't go too crazy. Definitely feels more powerful overall, both in Comfort and S+. Need to do some more driving, and hopefully be able to get my Gtech meter connected for some numbers.

jobro

My Tuner arrived yesterday and fitted today. Must say a very easy install and Bluetooth connection. can't wait until we get to give this a work out...................Maybe Thursday

Darrington

I did couple of quick Gtech runs this morning. Stock vs Race, 0-60 improved from roughly 4.9 to mid 4.5. Regardless of the actual number, a 0.4 to 0.5 improvement is pretty significant. Drove the rest of the way in Stock, and definitely noticed some power was missing. I'd like to get a few runs on each for consistency...

RTC450

ohhh very good i only get 0.15 average on the 1/8 mile and 1.5 mile more trap speed, very very mild improve i need more i will paid more for better performance over all

removedCFGaccount

You can't say that...l.

RichardCranium3

And you're still in a C400, correct? 91 or 93? Keep us posted on further runs for consistency sake. Thanks!

RTC450

RTC450

The sensor for the 60ft was not working(this # its not accurete) and my average pass without the tune is 8.5 at 84.5 Mph

Darrington

Yup...C400 on 93 octane. Been keep it in S+ a lot more too.

Will do...gotta try to find places to do consistent back to back run!

Robvoip

What setting did u have the module in and what octane did you use?

RichardCranium3

Cool... This should equate to even quicker times for the 450/43 crowd. Thanks for the numbers.

sterz85

any updates? everyone still happy with their Dinan?

removedCFGaccount

I no longer use mine.

Crankster

What you say this, did you remove it or change the setting to stock? I think it is pretty unobtrusive until needed so why not just leave it or sell it to recoup some of your money?

removedCFGaccount

The money is too little to fret over. I leave it in stock. It's a good device, just not enough for me.

What I want is likely a chimera: more horsepower than this produces, without removing my chip or potential for reducing engine useful life.

I should have bought a 63s, though I love my car.

Darrington

For my C400, significant improvement in performance. The unit is in RACE, and I'm usually driving in S+ mode. Highly recommend for the price of entry.

BRBM

I can see that it's all relatively easy from all the DIY instructions and pics. But has anyone documented the installation for a YouTube upload? I mean for the technically unsophisticated people like myself?

Saw one for the C300 a couple days ago, but just one for the 400 or 450, but only documenting some post installation acceleration testing.

removedCFGaccount

The hardest part is getting your hand in a tight space to remove a connector. If you need help, drop me a pm and I'll talk you through it.