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Title: Tuning for quick reving Post by: martin2day on June 18, 2021, 04:32:31 AM Hello,
is it possible to tune for quicker reving an the ME7.5... is there a chance to change some paramater i can tune for quicker throttle response. Have a nice day Martin Title: Re: Tuning for quick reving Post by: BlackT on June 18, 2021, 04:52:45 AM Put lighter flywheel
Title: Re: Tuning for quick reving Post by: jahko on June 18, 2021, 06:13:00 AM Run it on high octane fuel and get the timing bang on, free flowing intake and exhaust, other than that, lightening and balancing.
Title: Re: Tuning for quick reving Post by: prj on June 18, 2021, 06:32:06 AM Run it on high octane fuel and get the timing bang on, free flowing intake and exhaust, other than that, lightening and balancing. This makes 1% of difference.The 99% is flywheel weight and making sure LSD is not too aggressive in ECU. Title: Re: Tuning for quick reving Post by: martin2day on June 19, 2021, 02:11:48 AM Hello,
Thank you for your answers. I run 102 octan… Is there some Parameter to looking for in the ECU? At cold Start the Engine revs quicker… warm i feeling it is Slower. KFWDKSMX Is all cells at FF… Martin Title: Re: Tuning for quick reving Post by: jahko on June 19, 2021, 07:04:40 AM This makes 1% of difference. The 99% is flywheel weight and making sure LSD is not too aggressive in ECU. totally agree Title: Re: Tuning for quick reving Post by: martin2day on June 19, 2021, 11:39:05 AM What do you mean with Not so aggressiv LSD?
What Parameter i have to looking for? Have a nice day Martin Title: Re: Tuning for quick reving Post by: martin2day on June 20, 2021, 11:53:08 PM Hello,
i find some other parts: Throttle Response improve There are a bunch of delays stacking there 1) ME7 slow torque path (most of it) 2) throttle plate actuator/servo control (probably a few ms) 3) throttle plate angle sensor sampling (should be less than 10 ms, unless the ADC doesn't work like i think it should, would have to look it up) Can someone explain what slow tourque path mean... is this the ASR? Have a nice day Martin Title: Re: Tuning for quick reving Post by: jahko on June 21, 2021, 01:03:50 AM Because you're not directly asking the throttle to open, it goes through a circuit. You are not gona make that faster.
How quick an engine revs is how quickly it can get air in and out and rotate the mass of the crank through to the drivetrain. Unless it is running really badly, you're not gona tune it to rev noticeably any faster. The manufacturer didn't set revving speed to 70% or something you can turn up. It is the efficiency of the engine that dictates. It just does what it can do. Title: Re: Tuning for quick reving Post by: martin2day on June 21, 2021, 02:07:09 AM Hello,
i understand... if i change the flywheel then i have less intern weight... I found many videos were i can see the car is revving very slow: https://www.youtube.com/watch?v=ob1a5Qn2gQg (https://www.youtube.com/watch?v=ob1a5Qn2gQg) and than some were it revvs very quick: https://www.youtube.com/watch?v=WwCUAbDW6HQ (https://www.youtube.com/watch?v=WwCUAbDW6HQ) Have a nice day Martin Title: Re: Tuning for quick reving Post by: prj on June 21, 2021, 02:26:40 AM 1. Should be moved to noob section.
2. Not a single log is posted, just bs theorycraft. Post high-speed log of revving engine with throttle floored. Although that too is a waste of time. Fit a lighter flywheel. Title: Re: Tuning for quick reving Post by: nyet on June 21, 2021, 11:00:48 AM I agree. Without logs this thread is utterly pointless.
Title: Re: Tuning for quick reving Post by: Blazius on June 21, 2021, 11:57:43 AM After the throttle servo delay there is nothing stopping you from revving, except if your ignition for some reason is very retarded or your mixture is fooked that it sputters for a bit before correcting itself. Otherwise fit a lighter flywheel, like others said :D
Title: Re: Tuning for quick reving Post by: dream on June 25, 2021, 12:46:57 PM Although that too is a waste of time. Fit a lighter flywheel. That in particular. |