Help w/Dyno reading
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that dyno reading seems weird for a E55
Tq is way late and never cross he HP line. I think the peak TQ should be somewhere in the 2000-3000 rpm range and slop down from there. HP should cross somewhere around 5500 i think or less. something is not quite right there
Tq is way late and never cross he HP line. I think the peak TQ should be somewhere in the 2000-3000 rpm range and slop down from there. HP should cross somewhere around 5500 i think or less. something is not quite right there
Last edited by Mad TKD; Jan 22, 2007 at 04:55 PM.
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'14 ML BT
Looks like you did a stage 1 mod and picked up 35 hp and 81 lbs of torque.
Pretty darn good.
You should certainly feel that difference.
What work was done on the stage 1 and what make? Pulley and ecu?
Pretty darn good.
You should certainly feel that difference.
What work was done on the stage 1 and what make? Pulley and ecu?
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BMW E39
Torque does peak a bit high, but the tq and hp lines do cross. With the stage 1, she's a monster.
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Thanks again.
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dyno dynamics dyno might be the issue. Not the car. Operator could have applied the load on the car I guess.
I also had my car dynoed on the Dyno Dynamics Dyno. My TQ peaked way sooner. I wish I could find it to post ..........
I also had my car dynoed on the Dyno Dynamics Dyno. My TQ peaked way sooner. I wish I could find it to post ..........
Last edited by Mad TKD; Jan 22, 2007 at 05:19 PM.
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Out Of Control!!
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2015 S212
Screw Charles, I'm interested. Those numbers are so low that I get scared. Can we get these numbers in electronic format so we can do a car to car comparison? What did Jay's numbers look like? we all know Jeff's is "sick" 
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06 EuroElites E55
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SAE correction Factor basically is a way to keep dynojet numbers constant. What this allows is for you to be able to dyno at another dynojet and get similar numbers. The SAE - corrected #'s use this mode to correct the hp #'s using 77F as temperature, 29.23 as the barometric pressure and zero humidity.
Last edited by James@Creative; Jan 22, 2007 at 08:07 PM.
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From: San Diego, CA
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Jangy the numbers really arent that low considering 15% powertrain lose, and the fact that they dumb asses at JBA didnt use a fan. We all know how much the 55's love cold air.
If you look at Jeff's numbers heres what you get.
Stock is 469HP Jeff ran a 393HP baseline which equals a 16.2% powertrain lose.
RENNTech stage 1 numbers are an additional 45 hp, which should be 514hp. Use the 16.2% lose and you get should get 430 to the wheels. Jeff landed right at 428hp with out a FAN!!!
Honestly if we ran it again with the fan on, I'm sure he would have gain another 5 to 10. Looking at his A/F numbers looks like the car started to dump fuel to help cool the car down as the IAT went up.
Last edited by James@Creative; Jan 22, 2007 at 08:08 PM.
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The CF is correction factor and you have a variety of choices, such as SAE, DIN, EEC, STD and None. My understanding is that this tries to account for US vs EU standards and atmospheric variables.
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2K6E55 look at the dyno that was posted. It doesnt matter that it is a dyno jet. Do you see how soon the TQ peak is in that dyno. Every other dyno I have seen has had TQ peak in same area for a E55. The TQ curve in your dyno is about 1000+ rpm late.
also notice how in the dyno jet dyno the lines cross at about 5200-5300rpm. The lines do not cross at all in your dyno.
also notice how in the dyno jet dyno the lines cross at about 5200-5300rpm. The lines do not cross at all in your dyno.
Last edited by Mad TKD; Jan 22, 2007 at 08:20 PM.
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2K6E55 look at the dyno that was posted. It doesnt matter that it is a dyno jet. Do you see how soon the TQ peak is in that dyno. Every other dyno I have seen has had TQ peak in same area for a E55. The TQ curve in your dyno is about 1000+ rpm late.
also notice how in the dyno jet dyno the lines cross at about 5200-5300rpm. The lines do not cross at all in your dyno.
also notice how in the dyno jet dyno the lines cross at about 5200-5300rpm. The lines do not cross at all in your dyno.
On 2K6E55 his curves actually cross right after 5200 RPM. AS for the late tq numbers that's actually really odd as our other graphs have TQ peaking between 3200-3400
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I wasn't meaning to imply that the bump was low, I was talking about his baseline numbers. I'm used to E55s running closer to 420 at the wheel. I sure don't believe the 469hp part, since I've smoked plenty of other 55s. Jeff's description of the butt dyno is good enough for me to know that the pulley and ECU makes a difference as does the other feedback I've gotten from RENNTech customers. That is why i am so curious to hear about Jay's ride.
The TQ curve looks really off to me. I'm used to E55s having MUCH more low end grunt and it barely tapering off. This run looks more like an M powered car. I wonder if there is some reason why Jeff's looks like its dumping at higher revs? Maybe a fan, but also maybe the car? was he on the 19s, still?
Also, again is it possible to get the data when we run a dyno? I'd like to be able to analyze mine more than just on paper.
Guess there's only one sure way to tell and that's for us to go for a fun ride before I get done up!!
Sweet!! Let the RENNing begin.
The TQ curve looks really off to me. I'm used to E55s having MUCH more low end grunt and it barely tapering off. This run looks more like an M powered car. I wonder if there is some reason why Jeff's looks like its dumping at higher revs? Maybe a fan, but also maybe the car? was he on the 19s, still?
Also, again is it possible to get the data when we run a dyno? I'd like to be able to analyze mine more than just on paper.
Guess there's only one sure way to tell and that's for us to go for a fun ride before I get done up!!
Sweet!! Let the RENNing begin.
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so James@Creative? When did the HP and TQ cross? If I am going by the dyno posted it is after 6000rpm? The lines are not crossing in the dyno posted
The numbers seem to be fine its just where they are
The numbers seem to be fine its just where they are
Last edited by Mad TKD; Jan 22, 2007 at 09:46 PM.
Out Of Control!!
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From: San Diego
2015 S212
The crossing we talk about is actually different. The thing to keep in mind is that all runs are relative to that point in time. Setup, calibration, etc can be a huge factor. I guess my point is that there are such gross differences in 2k6e55's dyno run as compared to what we are used to seeing that analyzing the nuances is a bit falacious. As Jeff said, something ain't right. If its the car, it is likely a simple cooling thing. Other than that, he just got a pretty clean bill of health. My guess is that something is odd on the dyno setup and run. In either case, we can see and he can feel the Stage 1 mods. I would just personally like a cleaner dyno run.
