It's actually not bad .........for Renntech.

3495$ gets you a tune and some simple exhaust tweeks that takes your TT from stock up to 669hp!!!!!!

Can't be headers and tune for that. That's just doesn't sound like Renntech.

Can you imagine when Eurocharged and OE get their hands on this TT.

Sniff....why does Benz torture us broke guys with facts like this on the new TT.

Article here

I think OE has done a few tunes... Im just having a tough time getting up to see Jeremy with the holidays and such.

I actually really enjoy my CLS63TT with the PP so a tune is gonna be even more amazing.

LMAO

Are people actually dumb enough to pay that?

That is like taking a virgin to prom night in hopes of getting your monkey punched and oyesters served.

Most people that can afford the new TT platform will pay that all day long. In past experience I've been able to get them to come off the retail price.

it wouldnt be headers because its a turbo... they hook up to manifod... really only seen custom setups that run actual headers to a turbo... not really enough space for them

in Renntech website, the tune only cost that much, from where the article got exhuast mod !!

what make me think is how come it is 669hp at the crank !!

while mercedes says its 518hp + their tune 105rwhp (120hp crank) = 638hp !!!

still trying to solve number issues.

i talked with German MB / AMG guys when they were here during F1, i asked them about the engine is down rated and it shows higher than what we assume on the dyno.

their reply ( how come the engine output is higher when we measure it on a crank dyno and it gives us the power accurate in KW, your are seeing higher numbers than yolu expect because drivetrain loss is much less than our old cars).

so i would have prefered if Renntech just focused on their gains, rather than showing off with their calculations --> which resulted in 669hp. (marketing)

i don't think it will be alot faster than dbassons55 CLS63 Brabus tune (620hp) and you can see in the videos the diffrence between my CLS63 PP and his Brabus tuned.


and a last point, not trying to bash Renttech or anything, infact, their products are very nice and i admire them since more than 10 years and i loved their W210 EV12 and their CLK GTS 7.4

Watched Renntech make a few passes last night at PBIR with Vossens CLS63 TT. Car ran 11.44 on sticky tires. They should have the vids up. Nice guys actually, they helped Redbull put his car into dyno mode...for free..imagine that.

That was SWEET! They did it in like four bottons. And he made me do it so that I could do it on my own. It was great. and It only takes one push of a botton to take it off. Those guys are great!

Crazy #'s!

Renntech's CLS63's trap speed of 125 tells me it probably is close to 670hp at the crank. I'm just basing it on my own numbers where my 630bhp W211 with crappier slushbox and heavy panoroof traps 122-123 all day long in average DA.

You know Ali actually I think the Renntech tune is better than the Brabus although I got a high wheel horse power reading it was never consistent I was never happy with the outcome of the car, I went and did a new tune and the car has turned to a total different beast third gear pulls like it pulled in second gear it's just amazing I am getting high flow cats fitted on Sunday and on Monday I am putting her on the dyno. I am hoping with this mix larger cooler, better tune, 200cell cats and filters, I get close to 600 that will really be good will post the outcome and findings on the CLS thread.

Has to be crank horsepower right?
The renntech guys are real nice and are willing to discuss anything when it comes to tuning.

Did you not see there dyno sheet?

they took the car bone stock and it put down 473WHP so add about 16% drive loss and you are pretty close to that 550 crank hp MB states for the pp.

They got 570 WHP from the tuning so add that same 16% and you get 661 crank hp.

Here is the before and after if you missed it.Who cares about crank hp anyways,its what it puts down to the wheels and what it traps in the 1/4 that counts.I have no doubt that renntechs tune is not making its claims,it ran pretty much what a gutted fulley modded stage xxx e55 does on race gas in full weight pump gas run.

double post

3500 is not bad at all if you look at the gains and remember you can get this flash at most dealers.

Renntech got almost 100whp and 160rwt on a pp car so its about 135whp and 180rwt on a non pp car.

do you know how much money I dumped in my car to make 100whp? lol alot more than 3500.

Id be all over a renntech tune if I had the new TT

3500 bucks and I get almost 600whp? all day bro.I can see it them being stingy but the gains are there and 3500 for 100whp is well worth it.

Im sure eurocharged or oe will have a tune that makes just as much power but will you be the guinny pig trusting them on a 140k car?

Hells no lol and the fact that you can get a renntech flash at 3 of my local dealers is just iceing on the cake,or should I say a bj after the prom night lol

Im the biggest kleemann fan and I still wouldnt get there TT tune just because of the chance something happening on a new platform that no one has delt with yet.

renntech and AMG are boys and work together,renntech even sells a modded slr threw them.

+1 since crank hp and percentage drivetrain losses aren't usually calculated correctly for mods.

Take the MB 550 crank hp number and subtract the dyno 473 whp and there is a 77 hp drivetrain loss on that dyno. Add 77 to the tuned 570 whp and then the crank hp is 647 hp, not 661. Drive train loss doesn't increase with adding more hp.

That's not right you can't add the 77hp to the 570 run. As power increases so dosnt heat and friction in the drive train.you have to calculate it with % since the more who your putting down the harder it is on the tranny

Going by your numbers the car has 14% drive loss

It actually does increase. The percentage stays about the same, but the actual number is pretty proportional to the increased HP. The more power you send through the drive train the more friction you have between gears, differentials, torque convertor slip if applicable, bearings, etc... If you raised the rear end were able to lock the tc and somehow put it in gear(or use a car with a manual trans) you could probably spin the input shaft and entire drive train with your hand. Put 550 HP in front of it and a load behind it and suddenly the driveteain is sucking up 100 HP.

It’s not my number since I didn’t make up the drivetrain loss. The 14 percent loss you calculated is based on the posted dyno results. Try adding the 14 percent loss to the tuned 570 and its +/- 650 crank...still off from Renntech’s numbers. You're using 16 percent to justify their numbers.

Most dyno results are good for whp only but I did talk to a Dyno Dynamics rep at the Performance Racing trade show in Orlando this past weekend and he said he could come up with an accurate crank number and not based on assuming proportional loss calculations.

There is no way that car is at 14% most automatics are 20% and I used a conservative 16% since mb is saying there setup is more efficient.don't forget that most boosted cars are underrated from the factory.only way to find out what the real crank hp is to take the engine out the car and Dyno it on an engine dyno and id bet it puts out exactly what renntech is rating it at the crank.

And please tell me how exactly is he going to tell you the crank hp without assuming a number?there is no way to get exact crank hp from the whp.you don't have the actual losses to calculate it.we are all amusing crank hp based of a 15-20% number what has been used for years on most automatics

$3500 for 100RWHP with a simple tune is worth it..

Let's think about a E550 Coupe RWD, with Sports Package.

Around 3800lbs.. 4.6TT is putting down around 370RWHP+/-

add 100 RWHP with tune with a mix of 91/100 octane...

Just tell me where to drop off th E55.. I'll be all over it.

BTW: E550 sedan only comes in 4Matic for now..

the new E550 coupe could be interesting for sure.. What are they plans with the C class?? Any TTs going into those cars?

3.5 V6 Direct Injection only... for the next couple of years.

1.8 T is too small of an engine to really have potential.

glad to hear you sorted it out.

when i talked with Brabus, the explained for me that it is a piggyback, so it is known it will loose some boost/power on higher gears. like the panamera turbo.

i didn't say their gains are bad or wrong, infact, 100rwhp is very nice on a stock car.

but it was better if they just focused on the gains on the dyno rather than calculating it on crank and making it up to 669hp.

saying 100rwhp or 120hp crank more (20% drivetrain loss if you would like).

let the customers do 518 + 120 by themselves.