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Rev Matching Retrofit

Silver Bullitt

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It doesn't require rotating anything. "Heel & toe" is a misnomer, it's actually "Big toe & right side of foot", no contortions are necessary.
img145335495937456a06fce4bf118093b7c1420.jpg





Well, obviously that's not true.
Well, obviously that guy is clueless. He forgot to mash the clutch.
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NoVaGT

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It's just a blip.



Jesus!!! My car is filthy!!!:cwl::cwl:
 

Condor1970

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I don't mean to get bent out of shape. Well, yeah I guess I do. Same bloody thing happened on YouTube, when some jerk comes on complaining about rev matching on the 2019's. Saying it ruins the car with too many gadgets, and we should all just learn to how to drive, when all you have to do is turn it off if you don't want to use it. But I'll let it go, take a breath and meditate before I give myself a coronary.

That said, the "auto blip" is pretty nice. But the factory rev matching I believe is the best option, since it will change and match the rpm for every gear. Thus allowing a jump from say 5th to 3rd without a sequential shift. Gotta admit, that's pretty sweet.
I don't think auto blip does that. Does it?
 

Norm Peterson

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Life is too short to get bent out of shape over every imagined slight.
Didn't take it as an intentional slight and I certainly wasn't "bent out of shape" over it. Just that "easy-peasy" isn't so easy-peasy when you've got a joint that says "nope, we're not doing that".


Norm
 

boB

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I have experience with heel and toe but the factory rev-matching works so well I don't see any reason not to use it. If the OP can find a way to retro-fit it I say go for it. It may not be that difficult, the only xmsn sensor I see is the OSS (output shaft speed) and that should be on all MT-82s. The PCM may need to be replaced. :(
 

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Condor1970

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I have experience with heel and toe but the factory rev-matching works so well I don't see any reason not to use it. If the OP can find a way to retro-fit it I say go for it. It may not be that difficult, the only xmsn sensor I see is the OSS (output shaft speed) and that should be on all MT-82s. The PCM may need to be replaced. :(
I believe the PCM is physically the same. From what I understand, it's a sensor added to the shifter, and a software upgrade.
 

JohnD

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I'm 67 with a severely torn up right ankle and I can toe the brake pedal/roll the side of the foot to blip as good as I ever could. We need to come up with a better name than heel/toe since that's not the way most people do it these days. Even when I was young with great flexibility I never heel/toed, I always rolled the foot to blip.
 

boB

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I believe the PCM is physically the same. From what I understand, it's a sensor added to the shifter, and a software upgrade.
I looked in the Ford service manual and found no sensors in the shifter and none other than the OSS in the xmsn. *But* the electrical portion shows a connector C1854 that goes to a"Selected Gear Sensor" on the xmsn or shifter.
 

jacknifetoaswan

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The only trouble is that in the Mustang the pedals really aren't aligned correctly for this unless you're stabbing the brakes hard. The brake is too high relative to the gas. So you still have to either twist your ankle or rotate it so you can pivot instead of twist, for most downshifts.
It's very easy to adjust this. There's a thread on here about installing nylon washers behind the gas pedal assembly to raise it, relative to the brake pedal. The Brembo brakes are VERY hard with little travel on the stock pads, and I found that putting the washers in (takes all of two minutes under the dashboard) and installing different pads made the car perfect for heel/toe braking. I went from the stock pads to Power Stop Z23s, and while they don't have as much initial bite as the stock PP pads, I think they're every bit as good overall.

JR
 

Condor1970

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I looked in the Ford service manual and found no sensors in the shifter and none other than the OSS in the xmsn. *But* the electrical portion shows a connector C1854 that goes to a"Selected Gear Sensor" on the xmsn or shifter.
Well, logic tells me that if it uses the two signals from the speed sensor (ie, drive shaft RPM) and Engine RPM, then the computer immediately calculates the gear you are in. When you press the clutch in, the clutch sensor tells the computer it's out of gear, thus activating the rpm control. What baffles me, is how it knows which gear you are switching into while the clutch is pressed in. Because with the clutch pressed in, you can change gears, and the engine RPM immediately changes to match. So, it must somehow know which gear you are shifting to at all times. If there's no sensor on the shifter, then maybe the speed sensor in the transmission somehow also doubles as a gear sensor? Outside of that, I have no idea.
 

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boB

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Well, logic tells me that if it uses the two signals from the speed sensor (ie, drive shaft RPM) and Engine RPM, then the computer immediately calculates the gear you are in. When you press the clutch in, the clutch sensor tells the computer it's out of gear, thus activating the rpm control. What baffles me, is how it knows which gear you are switching into while the clutch is pressed in. Because with the clutch pressed in, you can change gears, and the engine RPM immediately changes to match. So, it must somehow know which gear you are shifting to at all times. If there's no sensor on the shifter, then maybe the speed sensor in the transmission somehow also doubles as a gear sensor? Outside of that, I have no idea.
The "Selected Gear Sensor" appears to mounted to the xmsn or the shifter. It has a 6 pin connector, three or four of the pins appear to let the PCM know what gear we selected. I plan to change my oil today or tomorrow and will try to locate the part and hope to get a photo of it.

Your wiring harness probably does not have this connector but it is only six wires that all go to the PCM.
 
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Norm Peterson

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I looked in the Ford service manual and found no sensors in the shifter and none other than the OSS in the xmsn. *But* the electrical portion shows a connector C1854 that goes to a"Selected Gear Sensor" on the xmsn or shifter.
So, it must somehow know which gear you are shifting to at all times. If there's no sensor on the shifter, then maybe the speed sensor in the transmission somehow also doubles as a gear sensor? Outside of that, I have no idea.
Off the top of my head, I'm thinking there would be some sort of position sensing that works off the shifter rail inside the transmission case/tailhousing. Detecting where the shifter rail moved to (in/out/rotational) would define the gear you're intending to use next.


Norm
 

jake_zx2

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It doesn't require rotating anything. "Heel & toe" is a misnomer, it's actually "Big toe & right side of foot", no contortions are necessary.
img145335495937456a06fce4bf118093b7c1420.jpg




Well, obviously that's not true.
Sure, it's totally easy to downshift like this... when you don't actually drive on a track

 

NoVaGT

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Sure, it's totally easy to downshift like this... when you don't actually drive on a track

That's completely retarded. There's someone that needs their vehicle set-up better.

Or they have extremely tiny feets.
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