Renntech Stage 1 M157 tune in a 2012 CLS63 AMG runs 11.3@125

Yes... YES... YES!!! WOW! 11.3 tune only in FL DA with a 1.8 60'!!! Go RENNtech!! Sick times! Possible 10's with big neg DA with a TUNE only!! Throw on some skinny's with some 17's on the back and wow.... I dont want to bench race but damn... the potential is huge for this car.I have been flirting with getting this car for a while now and this just made it a whole lot easier for me. Anyone want to buy a C63? LOL

So, basically, a stock PP M157 CLS 63 has the potential to run very high tens in neg DA with a drag setup.So, the PP E63 will be stupid quick/fast.

Originally Posted by propain

Yes... YES... YES!!! WOW! 11.3 tune only in FL DA with a 1.8 60'!!! Go RENNtech!! Sick times! Possible 10's with big neg DA with a TUNE only!! Throw on some skinny's with some 17's on the back and wow.... I dont want to bench race but damn... the potential is huge for this car.I have been flirting with getting this car for a while now and this just made it a whole lot easier for me. Anyone want to buy a C63? LOL

Do it!

Those cars are beautiful.

I just used the DA correction calculator on dragtimes and this is what it spit out:

Extensively Modified Supercharged and Turbocharged Engines11.208 @ 126.025 MPH

Obviously, the tune-only M157 is not "extensively modified" for the M157 platform. It may, however, be considered "heavily modified" (even though we're just talking a tune here) relative to other car platforms, when you look at the boost that it's pushing and the size/output of the engine.

Again, it's not heavily modified, but traditionally, cars that put out this much hp/tq are heavily modified. It just happens that the M157 is a monster in stock form.

that's pretty scary to think what these cars will be running when someone decides to really mod them...10's in a big heavy 4 door sedan is just ridiculous.

Originally Posted by LZH

that's pretty scary to think what these cars will be running when someone decides to really mod them...10's in a big heavy 4 door sedan is just ridiculous.

Indeed.

Imagine larger turbos, intercooler (if necessary... not sure about the efficiency of the stock IC), and meth injection on an aggressive map. Wow.

Originally Posted by Sonny

I just used the DA correction calculator on dragtimes and this is what it spit out:

Extensively Modified Supercharged and Turbocharged Engines11.208 @ 126.025 MPH

Obviously, the tune-only M157 is not "extensively modified" for the M157 platform. It may, however, be considered "heavily modified" (even though we're just talking a tune here) relative to other car platforms, when you look at the boost that it's pushing and the size/output of the engine.

Again, it's not heavily modified, but traditionally, cars that put out this much hp/tq are heavily modified. It just happens that the M157 is a monster in stock form.

And thats 0 DA. Calculate for -1200 DA and watch the magic happen. Of course it would correct up but you would still be in the 10's.

Originally Posted by propain

And thats 0 DA. Calculate for -1200 DA and watch the magic happen. Of course it would correct up but you would still be in the 10's.

I just tried the "-1200" input and it wouldn't do it. The field says "feet about sea level," so maybe that's why... But, I thought there was a feature that could correct down.

Originally Posted by Sonny

So, basically, a stock PP M157 CLS 63 has the potential to run very high tens in neg DA with a drag setup.So, the PP E63 will be stupid quick/fast.

This will be slightly faster than a PP E63 as this tune is more aggressive than the PP tune. The E63 is a little lighter as well...

Originally Posted by Sonny

Indeed.

Imagine larger turbos, intercooler (if necessary... not sure about the efficiency of the stock IC), and meth injection on an aggressive map. Wow.

Just a good exhaust is going to be a nice upgrade...

Originally Posted by Sticky

This will be slightly faster than a PP E63 as this tune is more aggressive than the PP tune. The E63 is a little lighter as well...

I don't know... If the boost on this tuned CLS is comparable to the PP cars and given the E63 is hundreds of pounds lighter, I don't think this tuned CLS will be faster than a PP E 63 with the same drag setup as this CLS (i.e., DR's). E 63 should be faster.

Originally Posted by Sticky

Just a good exhaust is going to be a nice upgrade...

Depends. If you mean manifold-back, then yes, most likely, because you could remove the cats. But if you mean just a catback, then probably not because the E63's stock catback is probably very high flowing.

Originally Posted by Sonny

I don't know... If the boost on this tuned CLS is comparable to the PP cars and given the E63 is hundreds of pounds lighter, I don't think this tuned CLS will be faster than a PP E 63 with the same drag setup as this CLS (i.e., DR's). E 63 should be faster.

If the cars have the same tune and setup the E will be faster due to its weight. The PP will be slower than a Stage I as Renntech as they already demonstrated they are gaining power on top of the PP.

Originally Posted by Sonny

Depends. If you mean manifold-back, then yes, most likely, because you could remove the cats. But if you mean just a catback, then probably not because the E63's stock catback is probably very high flowing.

I mean a full exhaust which is a great place to gain on turbo cars.

Originally Posted by Sticky

If the cars have the same tune and setup the E will be faster due to its weight. The PP will be slower than a Stage I as Renntech already demonstrated they are gaining power on top of the PP.

I understand. And that power gain must come from increasing timing if boost is the same. I don't know the power difference off hand between the PP and the RT stage 1 tune, but the power difference would have to be more than 50 hp/tq (just throwing out a number) to compensate for the difference of several hundred pounds in weight disparity.

Originally Posted by Sticky

I mean a full exhaust which is a great place to gain on turbo cars.

Absolutely.

Originally Posted by Sonny

I understand. And that power gain must come from increasing timing if boost is the same. I don't know the power difference off hand between the PP and the RT stage 1 tune, but the power difference would have to be more than 50 hp/tq (just throwing out a number) to compensate for the difference of several hundred pounds in weight disparity.

You can check it out here: http://www.benzboost.com/showthread.....3bar-18.85psi

I was told it was not just from timing.

Originally Posted by Sticky

You can check it out here: http://www.benzboost.com/showthread.....3bar-18.85psi

I was told it was not just from timing.

Well, what else could it be from?

On a F/I car, when you're increasing power with just a tune, you can increase power with adjusting the AFR and/or boost. So, if boost is the roughly the same, a power increase would be due to timing.

Originally Posted by Sonny

Well, what else could it be from?

On a F/I car, when you're increasing power with just a tune, you can increase power with adjusting the AFR and/or boost. So, if boost is the roughly the same, a power increase would be due to timing.

See post number 2 in that thread.

I mentioned in the OP timing as that was the logical correlation and was told that was not the case. I am simply relaying what I was told.

Originally Posted by Sticky

You can check it out here: http://www.benzboost.com/showthread.....3bar-18.85psi

I was told it was not just from timing.

This is a quote from your article that you linked:

"This Renntech tune maintains just about the same maximum boost pressure so the gains seem to be coming from more boost down low as well as adjusting the timing."

I'll still stick with my theory that a tune that increases hp by 20 and tq by 40 will not make up the difference of hundreds of pounds.

Of course, the proof will be in the actual track times. So we'll see when more time passes and more people get their new cars to the track.

That said, there are always variables and a RT stage 1 CLS can run quicker/faster than a PP E63, but if you compare the two cars in the same conditions (temp, DA, track prep, and drag setup (like tires), I believe the PP E63 will come out on top.

Edit: I read your above post after I posted this post.