SL55/63/65/R230 AMG: SLR Cams Dyno
Thread Starter
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Joined: Dec 2005
Posts: 1,653
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From: Ann Arbor
'03 SL55
SLR Cams Dyno
Well, I've got some data but there are a few caveats:
1) I don't have a baseline dyno. Just the current.
2) The car has two mods: SLR cams and VRP 80 mm throttle body.
3) The dyno unit was a Mustang. Conventional wisdom is to increase the horsepower 8% (or more) when comparing to Dynojet results.
4) The unit was acting a little finicky so one of the runs stopped at 5,000 RPM and the other run had RPMs inflated by 25%. (No, my SL doesn't redline at 7,300 RPMs).
With those caveats, the results were 439 HP and 443 ft lbs TQ. Woohoo! I wasn't expecting them to be that strong!
Thanks again to fellow modders VRUS, Jakpro1, and Chromikey as well as the guys at Motorwerks.
(Copy of dyno slip attached. )
1) I don't have a baseline dyno. Just the current.
2) The car has two mods: SLR cams and VRP 80 mm throttle body.
3) The dyno unit was a Mustang. Conventional wisdom is to increase the horsepower 8% (or more) when comparing to Dynojet results.
4) The unit was acting a little finicky so one of the runs stopped at 5,000 RPM and the other run had RPMs inflated by 25%. (No, my SL doesn't redline at 7,300 RPMs).
With those caveats, the results were 439 HP and 443 ft lbs TQ. Woohoo! I wasn't expecting them to be that strong!
Thanks again to fellow modders VRUS, Jakpro1, and Chromikey as well as the guys at Motorwerks.
(Copy of dyno slip attached. )
Last edited by jmf003; Apr 19, 2007 at 10:45 PM.
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Joined: Aug 2006
Posts: 2,915
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From: Fremont, Ca
EVOTECH Mercedes AMG
Well, I've got some data but there are a few caveats:
1) I don't have a baseline dyno. Just the current.
2) The car has two mods: SLR cams and VRP 80 mm throttle body.
3) The dyno unit was a Mustang. Conventional wisdom is to increase the horsepower 8% (or more) when comparing to Dynojet results.
4) The unit was acting a little finicky so one of the runs stopped at 5,000 RPM and the other run had RPMs inflated by 25%. (No, my SL doesn't redline at 7,300 RPMs).
With those caveats, the results were 439 HP and 443 ft lbs TQ. Woohoo! I wasn't expecting them to be that strong!
Thanks again to fellow modders VRUS, Jakpro1, and Chromikey as well as the guys at Motorwerks.
(Copy of dyno slip attached. )
1) I don't have a baseline dyno. Just the current.
2) The car has two mods: SLR cams and VRP 80 mm throttle body.
3) The dyno unit was a Mustang. Conventional wisdom is to increase the horsepower 8% (or more) when comparing to Dynojet results.
4) The unit was acting a little finicky so one of the runs stopped at 5,000 RPM and the other run had RPMs inflated by 25%. (No, my SL doesn't redline at 7,300 RPMs).
With those caveats, the results were 439 HP and 443 ft lbs TQ. Woohoo! I wasn't expecting them to be that strong!
Thanks again to fellow modders VRUS, Jakpro1, and Chromikey as well as the guys at Motorwerks.
(Copy of dyno slip attached. )
What was the gasoline used on this dyno runs?
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Joined: Jan 2002
Posts: 1,130
Likes: 36
From: Carefree az usa
2020 S560,14 ml350, 03 sl55, silver, pano, slr cams, evo headers, lsd, 2019 s63 cab.
jmf003- yes you really need to get asp pulley system installed. this will make a huge difference.
Thread Starter
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Joined: Dec 2005
Posts: 1,653
Likes: 5
From: Ann Arbor
'03 SL55
Hi, Adam. It was 93 octane.
Thanks for the recommendations, guys. It turns out I'm a mod junky. I really enjoy reading about the mods other people are trying, then picking and choosing what to do on my car.
A VRP airbox will be the the very next mod. Next is probably headers. I'm curious to see how the 55K motor runs with just airflow mods (intake, TB, cams, headers).
I know that a lot of people have gotten good results from the pulley upgrades. The ASP unit is very strong, of course. The new pulley from Euroelites also looks very interesting.
A VRP airbox will be the the very next mod. Next is probably headers. I'm curious to see how the 55K motor runs with just airflow mods (intake, TB, cams, headers).
I know that a lot of people have gotten good results from the pulley upgrades. The ASP unit is very strong, of course. The new pulley from Euroelites also looks very interesting.
Last edited by jmf003; Apr 20, 2007 at 08:59 AM.
MBWorld Fanatic!
Joined: Jan 2002
Posts: 1,130
Likes: 36
From: Carefree az usa
2020 S560,14 ml350, 03 sl55, silver, pano, slr cams, evo headers, lsd, 2019 s63 cab.
the pulleys, about $960.00 from asp,would be much more bang for the buck than the headers. do pulleys then headers.
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Joined: Mar 2007
Posts: 1,063
Likes: 2
From: Charlotte, NC
2002 S430, 2004 Cobra, 2004 Tahoe
Nice results, but I would look in to a custom tune before anything...you're lean up until about 4500 RPM's, then it goes rich on the top end...if you flattened that curve out, i know you'll gain some power and be safe at the same time...other than that, happy modding.
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Thread Starter
MBWorld Fanatic!
Joined: Dec 2005
Posts: 1,653
Likes: 5
From: Ann Arbor
'03 SL55
Nice results, but I would look in to a custom tune before anything...you're lean up until about 4500 RPM's, then it goes rich on the top end...if you flattened that curve out, i know you'll gain some power and be safe at the same time...other than that, happy modding.
Last edited by jmf003; Apr 20, 2007 at 09:44 AM.
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MBWorld Fanatic!
Joined: Jan 2002
Posts: 1,130
Likes: 36
From: Carefree az usa
2020 S560,14 ml350, 03 sl55, silver, pano, slr cams, evo headers, lsd, 2019 s63 cab.
no heat problems. also, i recommend speedtuningusa.com, talk to oliver. some people didn't like his program, but it is now up to date works fine on my sl55.
