A dyno graph worth a 1000 words: 362 rwhp / 344 rwtq
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CLS55 Designo 030
A dyno graph worth a 1000 words: 362 rwhp / 344 rwtq
Yesterday, I did 3 Dynojet runs at Hennessey Performance. My numbers were: 362.37, 349.83 (2 minutes later) & 357.86 rwhp; and 340.27, 341.91 & 344.22 rwtq accordingly. My printed out graphs are not the same as the ones given to me in a CD... I'm missing something here using the dynojet software to get to 362.37. First attempt:
Mr. Hennessey himself told me to consider a 19-20% drivetrain loss... which equates to 440-450 HP at the crank... not too bad for a 5 year old car with 101,000 miles...
I'm not a dyno expert but Dynojets are supposed to be optimistic. I'm very happy with the car overall; power is very linear and consistent. The correction factor used was by SAE: .99; temperature ranged in the mid 60s and humidity was about 12%. Pulls were done on dyno mode, 3rd gear and over 3,500 rpm punch.
I'm going to the track this weekend if the rain lets me (I tried Sunday) so I'm hoping to at least get a decent 12.7-12.8 run.
Mr. Hennessey himself told me to consider a 19-20% drivetrain loss... which equates to 440-450 HP at the crank... not too bad for a 5 year old car with 101,000 miles...
I'm not a dyno expert but Dynojets are supposed to be optimistic. I'm very happy with the car overall; power is very linear and consistent. The correction factor used was by SAE: .99; temperature ranged in the mid 60s and humidity was about 12%. Pulls were done on dyno mode, 3rd gear and over 3,500 rpm punch.
I'm going to the track this weekend if the rain lets me (I tried Sunday) so I'm hoping to at least get a decent 12.7-12.8 run.
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From: Maine
Not an AMG :(
Yesterday, I did 3 Dynojet runs at Hennessey Performance. My numbers were: 362.37, 349.83 (2 minutes later) & 357.86 rwhp; and 340.27, 341.91 & 344.22 rwtq accordingly.........
..........I'm going to the track this weekend if the rain lets me (I tried Sunday) so I'm hoping to at least get a decent 12.7-12.8 run.
..........I'm going to the track this weekend if the rain lets me (I tried Sunday) so I'm hoping to at least get a decent 12.7-12.8 run.
Did you get to monitor the AFR also?
[Edit] - sorry - I see you have Renntech mods!
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CLS55 Designo 030
Oh, forgot to list the current mods. Pretty straight forward stuff:
Performance:
Renntech Pulley & ECU
Full 55 Intake Setup (Boxes & Splitter)
K&N Filters
Resonator Delete
Cooling:
LET FMIC Heat Exchanger
Johnson CM30 Pump
Phenolic Spacers
I'm not sure if the sprint booster is consider a performance mod but I have it as well.
Thanks to all of you guys for the usual help and advice.
Performance:
Renntech Pulley & ECU
Full 55 Intake Setup (Boxes & Splitter)
K&N Filters
Resonator Delete
Cooling:
LET FMIC Heat Exchanger
Johnson CM30 Pump
Phenolic Spacers
I'm not sure if the sprint booster is consider a performance mod but I have it as well.
Thanks to all of you guys for the usual help and advice.
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CLS55 Designo 030
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From: Miami, FL
02 C32 AMG sold!
tuned hogged up the dyno. Going back Monday. Those fans
PUSHES alot MORE air than the fan used in my dynojet:
ALSO have the fan hitting the heat exchanger! That's why
the car is running rich! The HE isn't getting any air so the
IAT IS OFF THE ROOF!
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CLS55 Designo 030
Thanks for the input Rey. I'm going to keep that in mind for next time. And no, I haven't change the spark plugs & wires yet.
I took the name and number of the operator to make sure next time we simulate the procedure as close as possible. The people at HPE were really nice and professional, I was sorrounded by 1000 hp snakes.
I took the name and number of the operator to make sure next time we simulate the procedure as close as possible. The people at HPE were really nice and professional, I was sorrounded by 1000 hp snakes.
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From: Miami, FL
02 C32 AMG sold!
Loose 17% and you get 289.67rwhp & 275.56rwtq
NOW multiply that by 1.17 you get 338.91HP & 324.74TQ
NOW multiply that by 1.21 you get 350.50HP & 333.42TQ
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From: California, USA
E63 P30, CL500 Sport
C32 AMG Dyno 362 whp 350 wtq !!!!
Very impressive numbers. You're car is running really strong. You need to hit the tracks as soon as you can, I garauntee you'll see upper to mid 12 seconds 
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CLS55 Designo 030
I'll do my best to go this weekend.
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From: California, USA
E63 P30, CL500 Sport
At one point, my C32 was putting down 335 whp and I still was able to pull 12.7 seconds at 109 mph, I'm confident, you'll be able to hit 12.5 with a good launch 
and maybe even better 
and maybe even better
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From: PA
S600, GL450, GLC 43
I couldn't make it yesterday, the SRT4 that was being dyno
tuned hogged up the dyno. Going back Monday. Those fans
PUSHES alot MORE air than the fan used in my dynojet:
ALSO have the fan hitting the heat exchanger! That's why
the car is running rich! The HE isn't getting any air so the
IAT IS OFF THE ROOF!
tuned hogged up the dyno. Going back Monday. Those fans
PUSHES alot MORE air than the fan used in my dynojet:
ALSO have the fan hitting the heat exchanger! That's why
the car is running rich! The HE isn't getting any air so the
IAT IS OFF THE ROOF!
I would HARDLY call 13.0-13.5 A/F ratio RICH for a forcedinduction engine. IF anything, I would same thats as LEAN as I would won't to go. I ran my 5.0 race car with a whipple around 12.0. Keep in mind that 14.6 is perfect real world conditions, but almost EVERY race car runs ALOT less than this for power and safety factors.
I would say that WHOEVER did his tune, DID ONE GREAT JOB ON HIS ECU
See yeah
PS: GRAET numbers!!!
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From: Miami, FL
02 C32 AMG sold!
Hey there neihouma:
I would HARDLY call 13.0-13.5 A/F ratio RICH for a forcedinduction engine. IF anything, I would same thats as LEAN as I would won't to go. I ran my 5.0 race car with a whipple around 12.0. Keep in mind that 14.6 is perfect real world conditions, but almost EVERY race car runs ALOT less than this for power and safety factors.
I would say that WHOEVER did his tune, DID ONE GREAT JOB ON HIS ECU
See yeah
PS: GRAET numbers!!!
I would HARDLY call 13.0-13.5 A/F ratio RICH for a forcedinduction engine. IF anything, I would same thats as LEAN as I would won't to go. I ran my 5.0 race car with a whipple around 12.0. Keep in mind that 14.6 is perfect real world conditions, but almost EVERY race car runs ALOT less than this for power and safety factors.
I would say that WHOEVER did his tune, DID ONE GREAT JOB ON HIS ECU
See yeah
PS: GRAET numbers!!!
Carlos dynoing his car at WOT on 3rd gear to 105mph and
no air hitting the heat exchanger would make the car run
rich because the coolant in the aftercooler between the
supercharger and engine is hot beyond specs, making the
car run rich just in case.
But in the graph DOES show it's running lean, my C32 is
running consistant low 12's in AFR.
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From: PA
S600, GL450, GLC 43
You're right, I didn't look at the chart correctly, but when
Carlos dynoing his car at WOT on 3rd gear to 105mph and
no air hitting the heat exchanger would make the car run
rich because the coolant in the aftercooler between the
supercharger and engine is hot beyond specs, making the
car run rich just in case.
But in the graph DOES show it's running lean, my C32 is
running consistant low 12's in AFR.
Carlos dynoing his car at WOT on 3rd gear to 105mph and
no air hitting the heat exchanger would make the car run
rich because the coolant in the aftercooler between the
supercharger and engine is hot beyond specs, making the
car run rich just in case.
But in the graph DOES show it's running lean, my C32 is
running consistant low 12's in AFR.
Thats what we are all here for my friend, and your right about the air blower
See yeah
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From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
Last edited by c32AMG-DTM; Dec 5, 2007 at 07:35 PM.
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From: Oakland, California
07 E550, 02 C32, 91 300E
I get your initial conversion (assume 349 crank hp to be accurate, so if stock rwhp dyno figure is high 280s, you're looking at 17% driveline loss), but I don't get the following multiplication factors you're using.
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
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From: Miami, FL
02 C32 AMG sold!
I get your initial conversion (assume 349 crank hp to be accurate, so if stock rwhp dyno figure is high 280s, you're looking at 17% driveline loss), but I don't get the following multiplication factors you're using.
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
this multiply ratio from Maximum Performance, Victor and his brother. Now
the shop is South Florida Performance, I forgot how it was said but it was
explained to me once and I accepted it.
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CLS55 Designo 030
The real dyno will be at the track. Hopefully Erick will come along so he can drive the car as well... I've only been to the track once... 13.2 @ 109 was my best run with RT ECU and green filters. If I shave .5 seconds out of that time, I'll be extremely happy. Maybe it's too optimistic so we'll see.
I've also concluded that if you want to feel good about the car, no matter what mods you have, then dyno it on a cold day.
If you see all the correction factors this software has, some of them takes you to 378 rwhp, lol... I guess from a selling stand point that's something you can brag about...
I've also concluded that if you want to feel good about the car, no matter what mods you have, then dyno it on a cold day.
If you see all the correction factors this software has, some of them takes you to 378 rwhp, lol... I guess from a selling stand point that's something you can brag about...
Last edited by ///AMG4EVER; Dec 5, 2007 at 10:30 PM.
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CLS55 Designo 030
I get your initial conversion (assume 349 crank hp to be accurate, so if stock rwhp dyno figure is high 280s, you're looking at 17% driveline loss), but I don't get the following multiplication factors you're using.
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
If AMG4EVER's looking to ballpark crank hp, he just needs to take actual rwhp and divide by 1-driveline loss (that is, 0.83). 362/.83 = 436 hp at the crank, roughly. Not too shabby for a Stage I (or I+ maybe?) C32...
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LET C32 2002
Great numbers!
If I was able to do 13.29@105.89 in stock form with Magnecor wires, Denso IK20 Iridium plugs and Green filters at 299 RWHP/290 RWTQ with Dunlop Sport SP 8000 235/45/17 all around I don't see a reason why you couldn't hit low to mid 12s with essentially 60 RWHP more then me. Unless your weather and elevation really hold your car back.
I feel with just the ASP pulleys I can pull mid to high 12s now but since Evotech is reflashing my ECU I feel with getting larger Heat Exchanger and Larger Cap Johnson CM30 pump installed maybe low to mid 12s now.....can't wait til Spring for private drag race session with the usual suspects....
If the new Kumho Ecsta don't put me in the low 12s I feel the Nitto 555R will..
If I was able to do 13.29@105.89 in stock form with Magnecor wires, Denso IK20 Iridium plugs and Green filters at 299 RWHP/290 RWTQ with Dunlop Sport SP 8000 235/45/17 all around I don't see a reason why you couldn't hit low to mid 12s with essentially 60 RWHP more then me. Unless your weather and elevation really hold your car back.
I feel with just the ASP pulleys I can pull mid to high 12s now but since Evotech is reflashing my ECU I feel with getting larger Heat Exchanger and Larger Cap Johnson CM30 pump installed maybe low to mid 12s now.....can't wait til Spring for private drag race session with the usual suspects....
If the new Kumho Ecsta don't put me in the low 12s I feel the Nitto 555R will..
Last edited by c32used; Dec 6, 2007 at 12:25 AM.
