Ready2roll

I can't tell you how happy I am with this tune. The car is an entirely different animal. We base lined my car at 516 HP/559 tq bone stock. In fact, I drove the car straight from the dealer and put it on the dyno

The day after getting the base line numbers I had the ECU tuned. I enjoyed the car thru the holiday weekend and brought it back to the dyno today so I could measure the gains. To my surprise it laid down 595 HP to the wheels Torque jumped thru the roof to 643.9

So we are looking at a gain of 80 HP to the wheels and 85 lb ft of torque to the wheels. Freaking amazing!!!

Anyone know how much power loss thru the drive train? I see some tuners saying 17%, but I think that's an inflated number to possibly make their tunes look better? If we figure on a modest 12 % power loss thru the drive train then my dyno numbers would translate into roughly 666 crank HP and 720 lb ft of torque. We all know dyno's can vary so I wouldn't say these are exact numbers, but my base line numbers on the same dyno definitely show the gains.

Here's a dyno chart for you guys



Here's cool little video the Vtech guys put together with some pics/videos I sent them of my car. Enjoy!
http://www.youtube.com/watch?v=R6z_S...1&feature=plcp

The best part of the tune is it was only $2000

Ready2roll

I forgot to mention... my local track is closed until January 4th, but I will be there on that date, weather providing, to get some numbers on how well it goes down the track

BenzoBoi

hyperion667

is right!
hope it holds up!

Ready2roll

There's no doubt in my mind that it will. I didn't blindly have this tune loaded to my 125k car. We carefully checked air fuel ratios throughout the RPM range and also for any spark retard (detonation). there was none

Despite the power levels, this is a very safe and reliable tune. In fact, it's quite a modest tune. There's plenty of room for more performance if someone was willing to push the limits

From what I'm told this is the same tune sold by other vendors only this one is thousands less.

805Benz

So how does the 643 lb of torque feel?
How does the drive differ from stock? Are the wheels breaking at different gears vs stock?

Ready2roll

It feels incredible! This car is already a beast stock, but with the tune it kicks it up to a whole different level. The car is still very civil and drives like stock until you get into the peddle and the thing just roars to life. With traction control on you can definitely feel torque management kicking in to limit wheel spin in the lower speeds. I'll try to get a video of the car accelerating from a dead stop for you guys soon. It's a beast!

Ali_E55

the power loss on our CLS63 TT is about 9.5% as German MB tech says.

congrats on the gains my friend.

Ready2roll

Thank you Ali!

Excellent info on the power train loss, thank you for sharing! It seems these 7 speed transmissions are very efficient

Nachtsturm

Impressive, get a retune with some breathing mods to break that 600whp mark, lol.

Ready2roll

I said I was going to leave the car alone after the tune, but that doesn't sound like a bad idea

Are there any breathing mods/air intake mods for these cars?

Nachtsturm

Not yet that I know of. Couldn't even find a drop in for it.

Are there charcoal filters you can remove? I know that helps out the C63 guys.

griza

How much boost are you pushing? What is stock boost?

Vic55

Nice over all numbers!!! Nice gains over the curve after certain RPMs.


Not sure why anybody else didnt ask this or everyone is focused on peak numbers but did you notice that that stock tune is stronger in TQ and HP at lower RPM's? The modified tune doesnt start its gain (and its a strong one) until after 3500 rpms.

Ready2roll

That's a good question griza. I don't have a boost gauge on the car and I didn't get that info from the guy running the dyno. From what I've heard the PP cars have 18.8 psi and the non PP cars are running 14.4 psi

Ready2roll

Well, that's not exactly true. If you look at the chart the base line dyno reading started capturing at 2500 RPM whereas the tuned dyno run started at 3000. This gives the illusion that the stock tune may be stronger than the tuned version in the lower RPM ranges. If you move the Orange lines over to the start of the blue lines you can see the gains in the lower RPM's.

I assure you the "seat of my pants dyno" feels very strong gains right off idle

TMC M5

I still see some power loss at say 3,250RPM. At that RPM the baseline is showing 330-340hp and the tuned run is showing around 290hp. The difference may just be how the dyno operator got into the throttle on the two runs.

Getting back to your original point about parasitic loss...it all depends on the type of dyno. What type of dyno was it? Were the #'s corrected? Does your car have the performance package? (edit: I see that your sig has the PP) The 515hp baseline is much stronger than any other dyno # I have seen for a stock CLS63...which would lead me to believe that this particular dyno reads higher...and you would apply a much lower parasitic loss % if you were to try to guesstimate crank hp.

Tom

Ready2roll

That's certainly the difference. It was actually two different guys operating the dyno on each run. I'm sure they got into the throttle differently

This dyno was a dynocom and numbers were corrected. It's very possible the dyno reads higher. This is why it's impossible to compare one dyno number to another. For this test I was simply wanting to measure the gains from stock VS tuned on the same dyno.

If Ali's number of 9.5% holds true then this dyno is not that far off.
516 rwhp x 9.5% drive train loss = 565 crank HP
That's only a 15 crank HP variance from Mercedes advertised 550 HP

Vic55

My bad, and I have zero doubt the car moves faster in all points... Im sure the tune starts the boost up higher earlier which gives you immediate power.

Ready2roll

No worries Vic. The graph does look confusing.
Next chance I get I will swing by the shop and have them re pull it on the dyno and this time start capturing at 2500 RPM

vdubpower

did you start with the PP,

wondering if someone is gonna tune anyways, if it matters whether to get the PP version. besides the other aspects of it

Ready2roll

Yes, my car did have the PP package to begin with. You can save some money and not get the PP package and just get the Vtech tune and the results would be the same as a PP car with Vtech tune for a whole lot less money

805Benz

Hope you having lots of fun with the new toy. Any new videos from the dig, 60-mph-100mph, ect?

Ready2roll

I've been having a great time with the car

I'll get you guys some video very soon. I'm hoping to take it to the drag strip Friday night to get some times. I'll keep you guys posted

Ali_E55

stock CLS63 PP is rated in the manual 557hp so 9 hp are missing. but it is close though.

how is your car running ?