63 all models BEST 1/4, 1/8
I am going to have to agree with you on this one. All tunes I have ever had have some minor initial impact, but have always had to put a couple hundred miles on a tune to realize its maximum potential.
You would really want to test this on separate days to get those additional miles.
Since you probably already know how your car has been running off your original ECU you should just go ahead and put the new one in and break it in. See if your times at the next track event break your best times from before and by how much. Just an idea IMO.
I had the 11.4 on my 9th run in a row!
only stopping to swap tires - first time to the drag strip in 15 yrs and a slammed suspension and 1100 miles on the motor.
I'll have the proper tires a better ride height and a more broken in motor.
and maybe some more tricks up my sleeve.
But it will prob. be moot by then Jim will prob. be running 9's by March.
I def. left some on the table.

I agree with Mo in that taking the average of a number of runs with both ECUs (fully learned) on different nights is the best overall way to test tune A v tune B.
Again I applaud your enthusiasim but the results will be anything but concrete if the above method is used.
I have chosen to maintain a neutral "Higher Ground" No Opinion, here on the Forum, until the ECU testing is completed.
And add to that fact, I'm also one of the most consistent ET drivers you'll ever meet on a drag strip will only add to the real numbers achieved.
But to say SORRY..
, and start casting doubt on "Back to Back" ECU testing before learning of the results, says volumes to many on the Forum.Andy, The testing may show great results for the MHP ECU tune...
So until then, let's stop all the Bench Racing and posturing on one side or the other until we all know what the results are...
Jim
I have chosen to maintain a neutral "Higher Ground" No Opinion, here on the Forum, until the ECU testing is completed.
And add to that fact, I'm also one of the most consistent ET drivers you'll ever meet on a drag strip will only add to the real numbers achieved.
But to say SORRY..
, and start casting doubt on "Back to Back" ECU testing before learning of the results, says volumes to many on the Forum.Andy, The testing may show great results for the MHP ECU tune...
So until then, let's stop all the Bench Racing and posturing on one side or the other until we all know what the results are...
Jim
GL with your findings....
I have chosen to maintain a neutral "Higher Ground" No Opinion, here on the Forum, until the ECU testing is completed.
And add to that fact, I'm also one of the most consistent ET drivers you'll ever meet on a drag strip will only add to the real numbers achieved.
But to say SORRY..
, and start casting doubt on "Back to Back" ECU testing before learning of the results, says volumes to many on the Forum.Andy, The testing may show great results for the MHP ECU tune...
So until then, let's stop all the Bench Racing and posturing on one side or the other until we all know what the results are...
Jim
I have chosen to maintain a neutral "Higher Ground" No Opinion, here on the Forum, until the ECU testing is completed.
And add to that fact, I'm also one of the most consistent ET drivers you'll ever meet on a drag strip will only add to the real numbers achieved.
Jim, in all honesty, records are not set by making 33 passes in one day. That may be how you drive your car but you're leaving .2 and 1.5-2mph in it by not letting it cool off. When ECTs go over 190F the ECU starts pulling timing, both stock and with our tuning, except with our tuning, more timing gets pulled since there's more base/advance in there anyway.
, and start casting doubt on "Back to Back" ECU testing before learning of the results, says volumes to many on the Forum.
I preach the same to all our customers including you many times, 30-40 hard miles in manual then the rest (up to 200 total) hard in sport. Do not test until then.
You simply can't swap ECUs at the track and see the true potential of either, again it's just a fact that cannot be denied.
This much rings true doing both the uncorrected and corrected math.
You ran at ATCO with N/A cars that also ran at MIR and were running .2 and 1-2mph slower than they had the week earlier in MD. Meaning you're within a tenth of a second and less than 1mph than the two quickest/fastest CLK 63 BSs with your mods plus a complete longtube to tailipe full exhaust, and they made less than 10 passes at the entire event...
What exactly were you expecting? Jim
Nevertheless, do what you want.
At this point I'd like to offer you a refund in exchange for us taking you back to stock, you obviously aren't happy with your ECU/TCU gains, as such you can always run stock again or maybe try a PC tune? We have all the objective and accurate CLK BS 63 data we need at this point.
Thanks
Last edited by MHP; Dec 9, 2008 at 01:47 PM.

I hate to break this to you, but results have been and will continue to come in regardless of whether or not you attempt to complete the flawed test above. I don't mean this in a disrespectful manner but you posting said results would just result in more misinformation on this site, which we definitely don't need.
Nevertheless, do what you want.
At this point I'd like to offer you a refund in exchange for us taking you back to stock, you obviously aren't happy with your ECU/TCU gains, as such you can always run stock again or maybe try a PC tune? We have all the objective and accurate CLK BS 63 data we need at this point.
Thanks[/QUOTE]
Andy,
Let me mull over the generous offer to put me back to stock, with a full refund, as I'm out of town on business this week, and I'll get back to you...
Jim
The Best of Mercedes & AMG
I hope you guys can work things out and come to an agreement.



I hope you guys can work things out and come to an agreement.
Maybe we are all reading too much into this and James simply want's imperical data to further solidify the MHP tune results.
Andy has done the right thing by offering a full refund and stock flash, really no one loses here as the data will be at the very least interesting and likely help MHP after results are in. Seems like most MHP cars have done well but as with all tuning there will be unsatisfied customers etc..
So do we all agree the ECU needs to be "adapted" prior to use?
I know my ecu , seems stock although tuned needs retraining after the wife drives

Jim great post , and attitude.
After Saturday the 13th hopefully the "list" has some new elevens
I hope you guys can work things out and come to an agreement.
I wish my car would be as consistent as his. Everytime I run the car back to back, I lose 0.1 seconds in E.T. up to about 0.4 seconds
then it stablizes. I think the average of his runs before were 12.0 while the average of his runs now are 11.7
However, his test would still be awesome to see...... it will show how much the ECU adaptations affect (or doesn't affect) the performance. It should also give a good idea on the difference between the two tunes.

Josh, make sure you get this guy to send you timeslips. I think that makes 10 63's in the 11's now after you update the list with this weekends times?
https://mbworld.org/forums/c63-amg-w...s-122-mph.html

Josh, make sure you get this guy to send you timeslips. I think that makes 10 63's in the 11's now after you update the list with this weekends times?
https://mbworld.org/forums/c63-amg-w...s-122-mph.html
He's running a MKB ECU, filters, and headers and just removed his secondary cats prior to saturdays racing.
Hopefully he can make MIR in the spring.

Josh,
Keith and I were talking about our 1/8 mile traps. He seemed to be in the 93-94 range while I was in the 95-96 range despite some of his 1/4 traps going 120-122. I think the stock exhaust (specifically the 2 3/8" neckdown in the OEM exhaust manifolds and 4 cats) are playing a fairly significant role in choking my car in the backhalf.
Last edited by MHP; Dec 15, 2008 at 07:22 PM.



He's running a MKB ECU, filters, and headers and just removed his secondary cats prior to saturdays racing.
Hopefully he can make MIR in the spring.

Josh,
Keith and I were talking about our 1/8 mile traps. He seemed to be in the 93-94 range while I was in the 95-96 range despite some of his 1/4 traps going 120-122. I think the stock exhaust (specifically the 2 3/8" neckdown in the OEM exhaust manifolds and 4 cats) are playing a fairly significant role in choking my car in the backhalf.
Amazing just amazing. pretty soon I wont even be on the flippin list, Rick wheres your slips brah



yeah man Im not feeling so good now....Im gonna really need to step it up.
I guess if you drive my car to the 11's at least my car will be on the list !!
I am fairly certain I can reclaim the CLS crown at least with a few choice m o d s.
Man I need to update the list but I dont wanna knock my car that far down LOL

1/8 96.04
1/4 11.75@122.86
NOS RUN/Just the tip lots more left
Puts This CLS63 #2 on the NOS list
1/4 12.04@117.27 N/A
1/4 12.08@118.26 N/A
WITH STOCK ECU
SHOULD PUT US UP ON THE LIST
All these while hot lapping. Only cooled the car down twice all day at Famoso




1/8 96.04
1/4 11.75@122.86
NOS RUN/Just the tip lots more left
Puts This CLS63 #2 on the NOS list
1/4 12.04@117.27 N/A
1/4 12.08@118.26 N/A
WITH STOCK ECU
SHOULD PUT US UP ON THE LIST
All these while hot lapping. Only cooled the car down twice all day at Famoso
Definately there is a few ticks left in the CLS.
even a 1.85 60 gets you in the 11's
Definately there is a few ticks left in the CLS.
even a 1.85 60 gets you in the 11's
I had the 11.4 on my 9th run in a row!
only stopping to swap tires - first time to the drag strip in 15 yrs and a slammed suspension and 1100 miles on the motor.
I'll have the proper tires a better ride height and a more broken in motor.
and maybe some more tricks up my sleeve.
But it will prob. be moot by then Jim will prob. be running 9's by March.
I def. left some on the table.
I saw the video and it looked like the ride height worked quite well since there was very little squat when you launched. I think that helped you run that record breaking time that you did.
How about running some NOS? HP/TQ in a bottle!
Josh, my run was so close to what I had before, so I don't think it's worth it to update my spot. Maybe next time, I can shave another 0.1 or so if DA is good and it doesn't rain.



