Pedal stomp downshift (6MT only)

Gaiiden · 09-27-2009, 02:26 AM

I noticed recently that if I give the gas pedal a firm stomp (like pumping the clutch) all the way to the floor and release it while shifting it pretty much always sets me up for a smooth shift down one gear. If I hold the stomp barely a second longer it gives me a good segue down two gears. I haven't done any serious experimentation with it like turning the VDC on and off or anything, it's just something I've picked up under normal driving conditions. I also think it works best if you constantly drive aggressively (around 3k RPM) so the car actually revs when you stomp your foot. This lets me downshift without having to look at my RPM gauge to see what I'd have to do to match.

Like I said, haven't really experimented with it but it's happened often enough when I try it for me to think it's worth mentioning.

kenchan · 09-27-2009, 09:45 AM

are you saying that you finally figured out wat blip throttle is (considering your sig pict you seem to race cars???)

bullitt5897 · 09-27-2009, 11:07 AM

He was in the Bull Run all you need is money to get in the race... and yes thats called rev matching! thats what the Synchro rev match does for you so you dont have too. not only is it faster than you in doing it but it also allows you to focus on more important things like your braking points! lol I dont brake until I see Jesus!

Togo · 09-27-2009, 02:52 PM

Yeah sounds like rev matching to me...

JoeD · 09-27-2009, 02:55 PM

SpawnAeroJohn · 09-27-2009, 04:26 PM

Quote:

Originally Posted by bullitt5897

He was in the Bull Run all you need is money to get in the race... and yes thats called rev matching! thats what the Synchro rev match does for you so you dont have too. not only is it faster than you in doing it but it also allows you to focus on more important things like your braking points! lol I dont brake until I see Jesus!

How often do you see Jesus?

spearfish25 · 09-27-2009, 04:42 PM

First vote to close this thread...

shumby · 09-27-2009, 04:48 PM

i second that motion

Gaiiden · 09-27-2009, 05:00 PM

Geez. Tough crowd.

Either my past experience with manual cars is different than I remember OR none of you bothered to really read what I was saying. Of course it's rev matching and throttle blipping - DUH. That's not what I'm asking about.

What I'm saying is that in my past 350 and Tiburon GT (both manuals) I always had to modulate the throttle differently depending on my RPMs to match revs properly for a good downshift. With my 370, I've found that the pedal stomp, no matter where I am on the tach, gives me a great match. I didn't opt for the SynchroMatch but I'm wondering if the ECU still plays a hand, because I've never had the pedal pushed to the floor like that without the revs jumping way too high for a smooth downshift

shumby · 09-27-2009, 05:04 PM

ok now i see what you are saying. don't close the thread

semtex · 09-27-2009, 05:36 PM

Hmm...interesting. So you're saying that it's impossible to over-rev when blipping for a downshift?

RCZ · 09-27-2009, 09:51 PM

IMO....feels like that because its a heavy flywheel...the stomp gets the revs up and then the weight of the flywheel lessens the shock of being in the wrong RPM. What you are doing is just blipping the throttle...nothing more to it. Its just a heavy flywheel..

Nick911sc · 09-27-2009, 10:01 PM

Quote:

Originally Posted by RCZ

IMO....feels like that because its a heavy flywheel...the stomp gets the revs up and then the weight of the flywheel lessens the shock of being in the wrong RPM. What you are doing is just blipping the throttle...nothing more to it. Its just a heavy flywheel..

I agree, it is quite possible to still over-rev the downshift. I know I did it once by accident. But still, it's much easier to take your time since the revs come back down due to the heavier flywheel if you over rev it. Just take your time and it'll become easier and easier. I was actually quite shocked how hard I had to blip in order for it to match properly.

Gaiiden · 09-28-2009, 12:27 AM

Ah! Flywheel. That's certainly a more plausible explanation. I really like the effect, it's made driving manual a lot more fun compared to my previous cars, where rev matching on the downshift required a lot more attention to the throttle

CrownR426 · 09-28-2009, 12:35 AM

09-27-2009, 02:26 AM	#1 (permalink)
Gaiiden Base Member Join Date: Aug 2009 Location: Jersey Shore Posts: 227 Drives: 09 370Z Touring 6sp Rep Power: 16	Pedal stomp downshift (6MT only) I noticed recently that if I give the gas pedal a firm stomp (like pumping the clutch) all the way to the floor and release it while shifting it pretty much always sets me up for a smooth shift down one gear. If I hold the stomp barely a second longer it gives me a good segue down two gears. I haven't done any serious experimentation with it like turning the VDC on and off or anything, it's just something I've picked up under normal driving conditions. I also think it works best if you constantly drive aggressively (around 3k RPM) so the car actually revs when you stomp your foot. This lets me downshift without having to look at my RPM gauge to see what I'd have to do to match. Like I said, haven't really experimented with it but it's happened often enough when I try it for me to think it's worth mentioning. __________________ Drew Sikora Bullrun 2009 participant

09-27-2009, 11:07 AM	#3 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	He was in the Bull Run all you need is money to get in the race... and yes thats called rev matching! thats what the Synchro rev match does for you so you dont have too. not only is it faster than you in doing it but it also allows you to focus on more important things like your braking points! lol I dont brake until I see Jesus! __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

09-27-2009, 04:48 PM	#8 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	i second that motion __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

09-27-2009, 05:00 PM	#9 (permalink)
Gaiiden Base Member Join Date: Aug 2009 Location: Jersey Shore Posts: 227 Drives: 09 370Z Touring 6sp Rep Power: 16	Geez. Tough crowd. Either my past experience with manual cars is different than I remember OR none of you bothered to really read what I was saying. Of course it's rev matching and throttle blipping - DUH. That's not what I'm asking about. What I'm saying is that in my past 350 and Tiburon GT (both manuals) I always had to modulate the throttle differently depending on my RPMs to match revs properly for a good downshift. With my 370, I've found that the pedal stomp, no matter where I am on the tach, gives me a great match. I didn't opt for the SynchroMatch but I'm wondering if the ECU still plays a hand, because I've never had the pedal pushed to the floor like that without the revs jumping way too high for a smooth downshift __________________ Drew Sikora Bullrun 2009 participant

09-27-2009, 05:04 PM	#10 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	ok now i see what you are saying. don't close the thread __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

09-27-2009, 09:45 AM	#2 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	are you saying that you finally figured out wat blip throttle is (considering your sig pict you seem to race cars???)

09-27-2009, 02:52 PM	#4 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 657	Yeah sounds like rev matching to me...

09-27-2009, 02:55 PM	#5 (permalink)
JoeD Banned Join Date: Aug 2009 Location: CA Posts: 495 Drives: Z Rep Power: 0

09-27-2009, 04:42 PM	#7 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	First vote to close this thread...

09-27-2009, 05:36 PM	#11 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Hmm...interesting. So you're saying that it's impossible to over-rev when blipping for a downshift? __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

09-27-2009, 09:51 PM	#12 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	IMO....feels like that because its a heavy flywheel...the stomp gets the revs up and then the weight of the flywheel lessens the shock of being in the wrong RPM. What you are doing is just blipping the throttle...nothing more to it. Its just a heavy flywheel..

09-28-2009, 12:27 AM	#14 (permalink)
Gaiiden Base Member Join Date: Aug 2009 Location: Jersey Shore Posts: 227 Drives: 09 370Z Touring 6sp Rep Power: 16	Ah! Flywheel. That's certainly a more plausible explanation. I really like the effect, it's made driving manual a lot more fun compared to my previous cars, where rev matching on the downshift required a lot more attention to the throttle __________________ Drew Sikora Bullrun 2009 participant

09-28-2009, 12:35 AM	#15 (permalink)
CrownR426 A True Z Fanatic Join Date: Nov 2008 Location: South Korea Posts: 4,676 Drives: Manual Rep Power: 848	__________________ Love + Hardwork + Passion RIP SVTRacer

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