Hi Guys,

I purchased a 2010 E550 4MATIC with the RENNTECH ECU tune and headers. As per RENNTECH, the HP increased from 382 (stock) to 402 after the tune.

Any idea on what the 0-60 would now be? Stock as we all know is 5.2-5.3. Yes, I know I can test it, but I'm wondering if anyone else would know or has any experience with a tuned E550.

Thanks!

 

4.8? that's my guess. Bet that 273 sounds sweet with the headers

 

How sweet it is! 4.8 works for me ha ha

 

10hp equals about 0.1s quicker as far as I have read before.

As for the best way to know for sure, buy a Vbox

 

Never head of vbox but looks interesting! If .1s quicker that takes me to about 5 flat or maybe 4.9..

 

0.1s quicker sounds about right...
Mine after tuned got in 3.49s (Best run)

You can just buy OBD2 BT adapter around $15~100.
Connect to your iphone or android phone with apps such as Torque Pro...etc.

Vbox is more accurate but price is around $600~800

Here is a Video link for torque app

 

I cant speak for the 2010's but here is what a tune did to a 2007 w211 with the same original horsepower numbers.

https://mbworld.org/forums/e-class-w...tr-mile-2.html

 

I highly doubt the accuracy of the accelerometers in a cell phone vs an actual Race computer or tuner like what car and driver uses. There is a reason no one bases zero to 60 times off what a cell phone says. 3.49 would be absolutely insane, but seems very highly unlikely. Maybe in a 550 with 600 horsepower.

See what a real car computer says.

https://mbworld.org/forums/e-class-w...tr-mile-2.html

 

So I can expect 4.9 I guess.

 

Read down to page 2. 4.43 - 12.7 quarter mile.

 

I'm not sure if a eurocharge tune is the same as renntech? It also doesn't say how much hp he finally ended up with after the tune...unless I'm blind lol. Either way anything under 5 seconds would be good. I guess I can safely say I'm under 5.

 

Wow only 20 extra hp from Ecu tuned by Renntech and headers? OE ECU tuning itself is already extra 30hp. Something is not right. You sure it's only 20hp gain?

 

I read on the Renntech site it was only 20 more HP with the ECU upgrade. I'm not sure if the Headers make an additional difference.

 

Yes, maybe the headers would make some difference, but I am not sure. When I bought the car, the seller stated that the car was at 450HP. I'm not sure where that number came from though.

 

how about a video of how it sounds?

 

Never did one of those! I'll try to find time and post one, although I do not think my car sounds any more different than 1 that is not tuned.

 

450 would be perfect. Good for you, even just over 400 HP is great. Unless you're racing at the track you'll be able to hold your own against almost everything out there.

 

Thnx!

 

Don't you have headers?

 

Yes, I do. So, does this mean my car will sound different than an un-tuned E550 when driving down the road? Or, is this something I would notice when popping open the hood and revving the engine?

 

In general, yes, your car should sound a little throatier and with more rumble than a stock E550 without aftermarket headers. Why not add a cat-back exhaust system and really complete the package?

I think the RennTech ECU tune is conservative, and pushing the N/A 5.4L Engine to a nice increase without compromising reliability, etc.