Dyno results
#1
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Dyno results
Finally had an opportunity to strap my bone stock '05 onto a Dynojet this morning. Run was done in dyno mode, 4th gear. Do these results look about right?
![](http://images.andale.com/f2/115/106/1101220/2007/11/12/dyno_1024.jpg)
#2
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Join Date: May 2004
Location: orange county, ca
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2006 E55
hopefully this dyno will lead to another very soon
![Wink](https://mbworld.org/forums/images/smilies/wink.gif)
![Wink](https://mbworld.org/forums/images/smilies/wink.gif)
looks OK to me. Thats about what I dynoed at with renntech stage 1, but no cooling fans at all.
![Wink](https://mbworld.org/forums/images/smilies/wink.gif)
![Wink](https://mbworld.org/forums/images/smilies/wink.gif)
looks OK to me. Thats about what I dynoed at with renntech stage 1, but no cooling fans at all.
#4
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#7
That's warmer than I was thinking. The torque looks high to me also. Are you sure the ECU has not been modified (are you the original owner?). I would be very happy with those numbers especially if the car is stock.
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#10
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As for the torque, I have no explanation other than noting it was pretty consistent for all three pulls we did.
Finally, I can say that having the car on the dyno and just flooring it and letting it accelerate up to where the speed limited kicked in at around 160mph is most definitely the hardest the engine has been pushed during my ownership of the car. I'm amazed with the car more than ever now.
#12
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#14
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It doesn't. In fact, according the MB's published ratings, peak HP is at 6,100 rpm, while max torque is supposed to be at 2,650 rpm, so it's clear that the top speed limiter cut in before my engine reached peak HP.
What this suggests is the need to do the dyno runs in 3rd gear so that the engine speed can get up to over 6,100 rpm.
Anyone have any thoughts on the relative merits of doing 3rd gear pulls versus 4th gear pulls? I assumed that since 4th gear is a 1:1 ratio, it was best to use, but it's clear that the top speed limiter kicks in in fourth gear before the engine can reach its peak HP engine speed of 6,100.
Once you start modding, then torque and HP peaks will occur at rpms other than the published engine specs.
What this suggests is the need to do the dyno runs in 3rd gear so that the engine speed can get up to over 6,100 rpm.
Anyone have any thoughts on the relative merits of doing 3rd gear pulls versus 4th gear pulls? I assumed that since 4th gear is a 1:1 ratio, it was best to use, but it's clear that the top speed limiter kicks in in fourth gear before the engine can reach its peak HP engine speed of 6,100.
Once you start modding, then torque and HP peaks will occur at rpms other than the published engine specs.
#16
MBWorld Fanatic!
Sorry, don't catch the reasoning ..perhaps because here's very late now
but in my mind if you can't reach 6100 rpm because of the speed limiter in fourth gear (or whatelse reason), this means either that you didn't reach your real max power, or that the engine is no more stock and its max power is no more at, say 6100rpm but at 5600![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
Further 1:1 gear ratio in 4th, needs in any case to be multiplied by 2.65
but in my mind if you can't reach 6100 rpm because of the speed limiter in fourth gear (or whatelse reason), this means either that you didn't reach your real max power, or that the engine is no more stock and its max power is no more at, say 6100rpm but at 5600
![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
Further 1:1 gear ratio in 4th, needs in any case to be multiplied by 2.65
It doesn't. In fact, according the MB's published ratings, peak HP is at 6,100 rpm, while max torque is supposed to be at 2,650 rpm, so it's clear that the top speed limiter cut in before my engine reached peak HP.
What this suggests is the need to do the dyno runs in 3rd gear so that the engine speed can get up to over 6,100 rpm.
Anyone have any thoughts on the relative merits of doing 3rd gear pulls versus 4th gear pulls? I assumed that since 4th gear is a 1:1 ratio, it was best to use, but it's clear that the top speed limiter kicks in in fourth gear before the engine can reach its peak HP engine speed of 6,100.
Once you start modding, then torque and HP peaks will occur at rpms other than the published engine specs.
What this suggests is the need to do the dyno runs in 3rd gear so that the engine speed can get up to over 6,100 rpm.
Anyone have any thoughts on the relative merits of doing 3rd gear pulls versus 4th gear pulls? I assumed that since 4th gear is a 1:1 ratio, it was best to use, but it's clear that the top speed limiter kicks in in fourth gear before the engine can reach its peak HP engine speed of 6,100.
Once you start modding, then torque and HP peaks will occur at rpms other than the published engine specs.