Thanks for confirming that. any word on your test car results?

 

We have car in today for dyno and testing.

 

Brought my car in for testing this morning... I'm very optimistic of the results and will provide some feedback once I pick my car up tomorrow morning!

 

So where is the info on Dinan.
If I can't find it on you're site, I can't order one.

 

Sending you a PM.

 

Here ya go Tom : http://www.dinancars.com/product/d44...turbo-engines/

Pretty sure if you buy from a dealer its going to be the same price..but yeah thats the official Dinan link

 

I ordered the Dinan unit and installed it today. Don't have an Android phone but it's supposed to come set to Sport+ mode. Drove it around on the street and highway for about 30 minutes. I find it hard to tell if there is a difference or if it's in my mind. Not night and day at any rate (not that I was expecting it to be so) but I was hoping for more of a noticeable difference.

Will find an old Android device and play with the settings to (including "off") to see if I can then feel a difference.

 

Thanks guys for the opinions on the Dinan Tune. More updates in the future with a little more time with the tune would be great. I'm still on the fence! . Thanks!

 

@socalc300 I'd say if your on the fence order it from Dinan directly they have a 14 day return period

Also I think the car is learning more how I drive with it so it definitely seems to be giving more power

 

All dealers, us included offer the same return period.

 

I don't suppose anyone has tried to do 0-60 mph, quarter mile or 0-60 ft times before and after the Dinan mod on a C300? Dyno numbers are I guess good pub talk, but unless its translated to the ground, even $300 probably isn't worth it. IMHO.

 

well in all fairness the dyno numbers support a modest increase but the butt dyno is important as well . certainly the Dinan unit is increasing boost and so forth so the turbo will spool quicker and the car will have more "grunt" . that's what we're after & at 300.00 that's a pretty good value

 

that's a fair argument- that its only $300 so even if its not proven on road performance not a bad deal... maybe for some extra mid range torque or top end speed. I suppose even if it only got rid of the top speed governor and added additional rpm to redline it would be worth it. I just personally don't' spend too much money on modifications to my automobiles unless they improve performance in a significant way- regardless of cost. Occasionally I'll do cosmetic stuff like smoked side light lenses or window tint, but even when I've gone with aftermarket wheels and tires, I always go lighter than stock so the performance factor is still there. Wish MB had better aftermarket and tuning support- like VAG- I can get 70 hp and 110 ft lb torque on a stage 2 tune on a GTI for a $500 downpipe and a $550 ECU flash. Another $550 to $650 gives me a DSG tune. Same goes for the Audis. lots of aftermarket support and huge numbers gains for relatively low investment. from what I'm seeing as a first time Mercedes owner- not so much for this mark. oh well, its the wife's car anyway, so I'm only somewhat interested in modifications. But keep posting new ideas and options- I'm always looking for little things I can do to spark up her car a bit

 

If it wasn't for the fact U would be driving an Audi or VW. I agree the performance boosts are so much better on VW and Audi tho. I follow apr on facebook and the power for money gains are crazy

 

So I have an long overdue update on my car I brought in to OETuning on Monday. I brought my 2016 C300 4Matic over to OETuning on Monday for testing, and after picking it up Tuesday and having spent some time driving my car, I absolutely feel a difference in performance.

Overall, my car has more power through out the powerband, especially after 3K RPM. In higher speeds (>80MPH), she is still craving to accelerate more. The difference is also noticeable when I am pushing my car on surface streets. After each upshift, I feel much stronger acceleration leading into the next gear.

I haven't had a chance to do a 0-60 test yet, but attached are the before and after Dynos showing the difference in performance.

As you can see, there is a 22 max WHP increase and 75 max Torque increase... Using MB's stock BHP of 241 as a reference point, this would convert to a 31 increase in BHP. Definitely not the 65 max HP gain called out, but a very significant increase in torque. I am sure having my car in the shop will help them improve their tune further in the future.

In speaking with Rocco, the issues with previously tuned cars not seeing any performance increases lie within the fact the there are various amounts of timing maps within all C300s, and finding the right timing map to tailor their tune to is key to ensure each C300 is being tuned for maximum performance. For the past cars that didn't see any performance increases, this likely may be the cause, but OETuning can speak more to that.

It took a little longer than a day for them to get the tune right, but it was definitely worth the wait and I am loving the difference in performance.

Hope this provides so much needed context for anyone looking for updates on the OETune.

Thanks again Rocco and team, you guys were very communicative throughout the entire time!

 

So blue line is the first stock run?
171WHP = 215hp ( Stock )
191WHP = 239HP ( OE Tune )

that is about 24hp gain? 14hp more then what i saw on my dyno results

 

Stock HP is 241, not 215.

So, using the Stock HP of 241, I calculated a 29.05% decrease to WHP (171 WHP). Using that same decrease, I applied it to the new WHP of 191 to get to 272, which is a 31 HP increase. Hope that helps!

 

humm. I was using this calculator in below link to get my results.

http://www.mk5cortinaestate.co.uk/calculator4.php

 

First sentence of that calculator states: "It is impossible to calculate these values accuratly, this information should be used as a rough guide only."

I wouldn't put too much credibility toward that calculator.

I am calculating the HP loss to the wheel based off the stock HP since my car was also stock before getting the tune, so I am assuming the same % loss with the new WHP -> BHP. I'm sure YMMV, but in my case, these are my results.

 

Kinda OT but isn't the C300 4M rating of 241hp underrated?

I thought all Germans underrate their cars or was it just BMW?

 

Thanks for sharing the results. However, 29% drive train loss seems to be almost impossible. 15-20% for AWD yes. But not 30%. By following this logic, it's obvious that either the dyno machine measures whp in a different manner or it's simply not calibrated or something else.
I emailed Rocco/Jeremy yesterday asking for some clarifications, and yet to receive an explanation. After all, 31hp increase is far from the advertised 60+hp.

 

Yup i emailed them also but no response. if I'm only gaining 15-30hp i rather buy piggyback for $300.

 

hmmm, inquiring minds want to know what's really going on here

 

Called Rocco on Friday and he promised that Jeremy would email me shortly. Emailed OE yesterday to follow up but have not heard back yet.

 

I guess they found the issue want my ECU back for re-tuning. here is reply from Jeremy.