ECU Blips the throttle at shift
07-29-2005, 08:24 AM
#42
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lol rev matching on the 6MT, now ive heard it all
blipping the throttle on downshifts doesnt mean an rpm rise by 100. If Nissan somehow were the innovators here and worked out how to do it on a driver controlled clutch (i.e; not semi manual) then im sure they would have programmed it to rev a bit more so that everyone would know about it, and theyd have more text to fill the brochure
blipping the throttle on downshifts doesnt mean an rpm rise by 100. If Nissan somehow were the innovators here and worked out how to do it on a driver controlled clutch (i.e; not semi manual) then im sure they would have programmed it to rev a bit more so that everyone would know about it, and theyd have more text to fill the brochure
07-29-2005, 08:37 AM
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Originally Posted by Kolia
The flywheel will never accelerate on it’s own when you unload it.
Originally Posted by Kolia
You’re basically saying that an engine kept at 40% throttle will spin faster with zero load than one fighting mechanical and aero drag? I think it’s pretty obvious to everybody.
Last edited by Aggro_Al; 07-29-2005 at 08:50 AM.
07-29-2005, 08:41 AM
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I find the blip to be pretty annoying because it never matches up during regular driving without a delay. It results in rough shifting during normal driving. Maybe I'll just get a lightweight flywheel, 
.
.
07-29-2005, 09:28 AM
#45
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Originally Posted by Aggro_Al
What I wanted to show is that there is a loss between the flywheel and the drivewheels that we attribute to drivetrain loss.
The original poster said that the increase in RPM is due to the 6MT ECU's ability to automatically blip the throttle while shifting. I'm trying to say that the increase in RPM was not due to the ECU automatically blipping because the 6MT doesn't have automatic rev-matching or blipping.
The original poster said that the increase in RPM is due to the 6MT ECU's ability to automatically blip the throttle while shifting. I'm trying to say that the increase in RPM was not due to the ECU automatically blipping because the 6MT doesn't have automatic rev-matching or blipping.
Drivetrain loss is irrelevant to this discussion and so is Power equation.
Originally Posted by Kolia
Rather, just a "lag" when comming off the throttle.
And this lag is because of the ECU. My pedal is all the way up when shifting, so its not me. So if I wait long enough, the ECU catches up and there is no blip.
Originally Posted by Kolia
In which case, when we depress the clutch, the rpm drops immediately because the inertia of the car was what was keeping the engine spinning.
Last edited by spacemn_spiff; 07-29-2005 at 09:34 AM.
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