C218 CLS63, 2011 - 2019

Dyno Sheet - My Renntech tuned CLS 63 TT

Old Jun 23, 2012 | 11:17 AM
  #1  
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Dyno Sheet - My Renntech tuned CLS 63 TT

This was on a Dyno Dynamic...not a DynoJet like Renntech uses. Dyno Dynamics tends to read 12% lower than Dynojet. It even has a nick name...."The Heart Breaker". Renntech using a DynoJet got 581.6 WHP. Take 12% from that and you get 523 and I hit 535. If you crunch my number up 12% I'm right at 600whp on a DynoJet.

Renntech posted number for this upgrade is 680 at the crank.

I also don't like how the power drops off at the top end where the timing seems to go a little nuts. This sheet would suggest that I shift way before red line. We logged it too and confirmed the timing going nuts at the top end...and am trying to figure out how to share that.

All thoughts and comments welcome.....
http://www.flickr.com/photos/cerfboy/7425972516/http://www.flickr.com/photos/cerfboy/7425972516/ by http://www.flickr.com/people/cerfboy/, on Flickr
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Old Jun 23, 2012 | 12:24 PM
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Definitely some good power. Work out that top end and it'll be all good. (Not that you aren't making enough power already)
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Old Jun 23, 2012 | 12:29 PM
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Jason, like we talked about yesterday, we need to run these cars on the streets... paper is for fools (i say with some sarcasm as we need dynos for perspective)

You know what I made on that same exact dyno (diff day diff conditions) so you could very well be as fast as me if not faster... or slower

The street is where its at.
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Old Jun 23, 2012 | 12:32 PM
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hi, I'm sorry this is a noob question..
how many WHP does 680 HP at crank equal to?
Thanks bro!
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Old Jun 23, 2012 | 01:30 PM
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If I'm not mistaken, I remember my stock PP car auto shifting before 6000rpms even in S+ mode. Maybe the power at 6400rpm isn't important.

But having said that, I haven't driven the car much so its just something off the top of my head ...


Edit: Sorry my bad... It shifts below 6000 only in 1st - 2nd gear. Could it be a bad batch of fuel?

Last edited by Jspeed; Jun 23, 2012 at 05:04 PM.
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Old Jun 23, 2012 | 02:33 PM
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Nice power Jason! Trying to swing a deal on a new 2012 E63 today so hopefully will be joining your power ranks soon.

Congrats!
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Old Jun 23, 2012 | 06:28 PM
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Originally Posted by Vic55
Jason, like we talked about yesterday, we need to run these cars on the streets... paper is for fools (i say with some sarcasm as we need dynos for perspective)

You know what I made on that same exact dyno (diff day diff conditions) so you could very well be as fast as me if not faster... or slower

The street is where its at.
I hear you 100% and how you helped me goes way beyond running a forum...thank you. Glad your local...

Originally Posted by BenzoBoi
Definitely some good power. Work out that top end and it'll be all good. (Not that you aren't making enough power already)
I think I will be manually shifting away from that top end...going to play with that for sure.

Originally Posted by otherotherbenz
hi, I'm sorry this is a noob question..
how many WHP does 680 HP at crank equal to?
Thanks bro!
In my case 535....

Originally Posted by Jspeed
If I'm not mistaken, I remember my stock PP car auto shifting before 6000rpms even in S+ mode. Maybe the power at 6400rpm isn't important.

But having said that, I haven't driven the car much so its just something off the top of my head ...


Edit: Sorry my bad... It shifts below 6000 only in 1st - 2nd gear. Could it be a bad batch of fuel?
Fuel in CA sucks...91 and the tune is designed for 93. I believe that could be a huge variable.

Originally Posted by xtyper
Nice power Jason! Trying to swing a deal on a new 2012 E63 today so hopefully will be joining your power ranks soon.

Congrats!
Glad you're here.
First race I had you by a car or so I think and I manually shifted.
Second race I honestly can't remember who won but it was close...and I let the car shift at red line. I think the good that came from this Dyno is that I now know where to shift and can't take it to redline...I think. Does that even make sense?
And I'm just getting started on the inside... Hope to see you in the TT club soon although your car is pretty badass and moves like a phucker.
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Old Jun 23, 2012 | 06:31 PM
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Any thoughts on this being Renntech's way of providing a "safer" tune?
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Old Jun 24, 2012 | 04:19 AM
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maybe it need slightly bigger turbos for that high RPM issue.
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Old Jun 24, 2012 | 07:09 AM
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Originally Posted by Ali_E55
maybe it need slightly bigger turbos for that high RPM issue.
Dont think its a turbo issue, cos it sounds like he's losing power due to timing being pulled
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Old Jun 24, 2012 | 09:01 AM
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wow, this is way over my head.......I need to go back to the shallow end.....
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Old Jun 24, 2012 | 12:23 PM
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These are some serious numbers, but IMO I think its still not enough HP, 650+ and I'd be done with the car.

BUT.. This is a great tune, and those HRE's on your ride look sick AF. Looking forward to seeing more amazing stuff
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Old Jun 27, 2012 | 10:58 AM
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Saw the same power loss at the high end. Kleemann thought the turbo's might be on the small side at the power. Also- read somewhere that using a higher gear and letting the exhaust hit the turbos longer might give a higher but unrealistic number. Have not tried...
Attached Thumbnails Dyno Sheet - My Renntech tuned CLS 63 TT-amg1.jpg  
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Old Jun 27, 2012 | 11:01 AM
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Originally Posted by keith58
Saw the same power loss at the high end. Kleemann thought the turbo's might be on the small side at the power. Also- read somewhere that using a higher gear and letting the exhaust hit the turbos longer might give a higher but unrealistic number. Have not tried...
Keith - Thanks for this...very helpful. I'm actually working with Renntech to see whats up. I'm upgrading my turbos...can't wait to re-dyno...
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Old Jun 27, 2012 | 12:36 PM
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Dump in a couple bottles of Octane Boost and try again
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Old Jun 27, 2012 | 01:51 PM
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Good luck with the upgrade! I heard that replacing the turbos is a serious deal because they are basically welded in place...
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Old Jun 27, 2012 | 03:44 PM
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Originally Posted by freefall
Keith - Thanks for this...very helpful. I'm actually working with Renntech to see whats up. I'm upgrading my turbos...can't wait to re-dyno...
J, we should meet up at a local dynojet near you (MD Automotive in Westminster is a good one) and dyno our cars together. I'd be very anxious to see how our curves compare, same dyno, same day, same conditions.
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Old Jun 27, 2012 | 04:28 PM
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Originally Posted by xtyper
J, we should meet up at a local dynojet near you (MD Automotive in Westminster is a good one) and dyno our cars together. I'd be very anxious to see how our curves compare, same dyno, same day, same conditions.
You mean this isn't clear enough in who's car has more power???
http://www.flickr.com/photos/cerfboy/7451483686/http://www.flickr.com/photos/cerfboy/7451483686/ by http://www.flickr.com/people/cerfboy/, on Flickr

Yea....I'm down for a DynoJet run. You have my number?
C&C this weekend?
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Old Jun 27, 2012 | 04:30 PM
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Originally Posted by keith58
Good luck with the upgrade! I heard that replacing the turbos is a serious deal because they are basically welded in place...
I'm not going be a pioneer here...but have a forum buddy that has 10,000 miles on his new turbos with no issues and lots of smiles.
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Old Jun 27, 2012 | 09:54 PM
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a bunch of fast $h!t
Originally Posted by freefall
Any thoughts on this being Renntech's way of providing a "safer" tune?

They're not pulling too much timing. The old saying, "lean is mean" holds true but it also blows motors. 530-580 at the wheels is no joke !! It has to be an absolute beast on the interstate. . . . Congrats !!

Have you considered changing the downpipes ?
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Old Jun 27, 2012 | 10:15 PM
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Originally Posted by freefall
You mean this isn't clear enough in who's car has more power???

249 by Cerfboy, on Flickr

Yea....I'm down for a DynoJet run. You have my number?
C&C this weekend?
Nice photo! Is it just me, or is that pesky C63 slightly ahead of you.

Thinking about coming down to C&C this weekend, as being from the SF Valley I want to see how it compares to my local Supercar Sunday.

And yes, Ive got your number so I will give you a call to schedule those dyno runs once I get through the break-in period.
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Old Jun 28, 2012 | 02:31 AM
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Originally Posted by HPJunkie
They're not pulling too much timing. The old saying, "lean is mean" holds true but it also blows motors. 530-580 at the wheels is no joke !! It has to be an absolute beast on the interstate. . . . Congrats !!

Have you considered changing the downpipes ?
Downpipes are already in the works as are larger charge pipes and a larger heat exchanger. Then turbos...
I hit it pretty hard at about 70 today (with brand new tires) to get into the HOV lane and it fishtailed just a few feet to the left...love LSD...

Originally Posted by xtyper
Nice photo! Is it just me, or is that pesky C63 slightly ahead of you.

Thinking about coming down to C&C this weekend, as being from the SF Valley I want to see how it compares to my local Supercar Sunday.

And yes, Ive got your number so I will give you a call to schedule those dyno runs once I get through the break-in period.
Oh thats a that's optical illusion that happens in lots of photos......
Neven been to C&C...but it looks like this Sat will be my first time. Text me...
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Old Jun 29, 2012 | 03:00 AM
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Originally Posted by keith58
Saw the same power loss at the high end. Kleemann thought the turbo's might be on the small side at the power. Also- read somewhere that using a higher gear and letting the exhaust hit the turbos longer might give a higher but unrealistic number. Have not tried...
Do you have any idea what your highest intake temp was?
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Old Jun 29, 2012 | 06:35 AM
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Originally Posted by keith58
Saw the same power loss at the high end. Kleemann thought the turbo's might be on the small side at the power. Also- read somewhere that using a higher gear and letting the exhaust hit the turbos longer might give a higher but unrealistic number. Have not tried...
Did you tune your ECU with Kleemann? I was to do it this week but the wild fire in Colorado stopped me. Next week maybe. Just let me know.

Just read your other post. Never mind. You might be the first on this forum with the kleemann the tune. Hope I'll be the second one very very soon!

Last edited by Mr. Happy; Jun 29, 2012 at 06:48 AM.
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Old Jul 6, 2012 | 05:16 PM
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Just an update - I am going back and forth with Renntech and they are being great in helping me figure out this lose at the higher end. The two culprits by opinion are heat and the turbos pooping out. I will get to the bottom of this....lol
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