06-26-2022, 08:50 PM | #1 |
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F90 M5 Dyno - pulling torque, unhappy - resolved
Hi Friends,
Just threw my Launch Edition M5 on a dyno as a baseline prior to going down the carbahn stage 3 path (only current mod is Eventuri Gen 2 intakes) - we're noticing some weirdness though on a Dyno Dynamics AWD dyno. Essentially the car in dyno mode starts off RWD, then the front kicks in, so we're having a bunch of trouble ramping up in 5th. Best run we got was below: Looking at other graphs - particularly Evolves it seems we're hitting peak torque on point (~550lb ft / 750-770nm) then its pulling for the remainder of the run, with a pretty average showing of ~322awkw (430hp ATW). Car drives fine, and will happily snap off a 3.1 to 100km/h. Any thoughts here? ** edit ** resolved Last edited by nsanity; 06-28-2022 at 01:10 AM.. |
06-26-2022, 09:17 PM | #2 | |
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06-26-2022, 09:26 PM | #3 |
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06-26-2022, 10:07 PM | #4 | |
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Did they have it in Shootout Mode v8 Turbo ? The ramp rate is critical too. You had the trans in manual mode ? |
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06-26-2022, 10:30 PM | #5 | |
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2. It was in shootout mode, not sure on the mode. 3. We ran 200 Ramp, 80kg inertia, Evolves graph ramp looks to be 100, but the feedback is that seems low - will run again tomorrow before we pull the ECU's. 4. Yep - running 5th gear. Thanks for the heads up |
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06-27-2022, 08:24 AM | #6 | |
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Try 100 ramp as well before you give up. Nothing is wrong with the car, it’s all in the dyno settings. |
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06-28-2022, 08:01 AM | #8 |
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06-28-2022, 06:00 PM | #9 |
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Yep, happy with the baseline here - pretty on point for AUS deliver 98 Ron (93 AKI) fuel on a 35000km car. Torque line looks bang on.
Trans still not happy on the dyno (front wheels often refusing to engage), but we got 2 pulls that looked right. |
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