Welcome to the North American Subaru Impreza Owners Club Tuesday February 18, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > FA Series Factory 2.0L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 02-14-2020, 07:41 PM   #26
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

Why would it make a difference? What becomes exasperated by shifting slowly?

FFS is dumb for 99.9999% of applications, I dont see how a longer shift somehow makes this worse.
* Registered users of the site do not see these ads.
GlarryHoodDIT is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-14-2020, 08:36 PM   #27
noobultimatum
Scooby Newbie
 
Member#: 431550
Join Date: Oct 2015
Location: South Florida
Vehicle:
2016 WRX
ALL THE STAGES

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
Why would it make a difference? What becomes exasperated by shifting slowly?

FFS is dumb for 99.9999% of applications, I dont see how a longer shift somehow makes this worse.
Unnecessarily revving the engine to a set speed only to essentially clutch kick it doesn't sound like it would be worse than just regular ol' FFS?

I agree with you on FFS being dumb for damn near every application, but you're debating me on a hypothetical that would obviously make the FFS strain worse. lol
noobultimatum is offline   Reply With Quote
Old 02-14-2020, 09:09 PM   #28
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

Quote:
Originally Posted by noobultimatum View Post
Unnecessarily revving the engine to a set speed only to essentially clutch kick it doesn't sound like it would be worse than just regular ol' FFS?

I agree with you on FFS being dumb for damn near every application, but you're debating me on a hypothetical that would obviously make the FFS strain worse. lol
It seems like you dont understand what a clutch kick is either. Or granny shifting for that matter (did you think Vin Diesel was telling Paul Walker to shift quicker instead of granny shifting? ).

Unnecessarily revving the engine? What in the world are you talking about? Your first argument was that granny shifting too slow during a FFS is somehow worse than a regular FFS. I asked for clarification and you have in no way answered this.

I'll ask again. What does shifting slower have anything to do with making the effects worse? Why would it be a "clutch kick" if you're shifting slower and not if you shift fast? The RPMs literally stay the exact same and there isnt more load on the engine, what is the difference mechanically between a fast and short FFS?

Last edited by GlarryHoodDIT; 02-14-2020 at 09:31 PM.
GlarryHoodDIT is offline   Reply With Quote
Old 02-16-2020, 11:01 AM   #29
noobultimatum
Scooby Newbie
 
Member#: 431550
Join Date: Oct 2015
Location: South Florida
Vehicle:
2016 WRX
ALL THE STAGES

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
It seems like you dont understand what a clutch kick is either. Or granny shifting for that matter (did you think Vin Diesel was telling Paul Walker to shift quicker instead of granny shifting? ).

Unnecessarily revving the engine? What in the world are you talking about? Your first argument was that granny shifting too slow during a FFS is somehow worse than a regular FFS. I asked for clarification and you have in no way answered this.

I'll ask again. What does shifting slower have anything to do with making the effects worse? Why would it be a "clutch kick" if you're shifting slower and not if you shift fast? The RPMs literally stay the exact same and there isnt more load on the engine, what is the difference mechanically between a fast and short FFS?
Well this has dragged out for absolutely no reason considering i was talking hypotheticals.

FFS is meant to be done quick. You Hold gas down while clutch is in = RPM stay constant at a set RPM.

You are telling me... that you think... that taking longer to shift to the next gear while the engine speed is at a constant is not going to strain the motor unnecessarily MORE SO THAN just good ol' fashioned FFS?

Holding the RPMs at 5 or 6 for any prolonged time frame is not in anyway worse, to you or in reality, than holding it for the split second a FFS should take?

I seriously don't understand your argument here. Are we arguing semantics? technical definitions of slang terms like "granny shifting"? FOH guy lmao relax. OP has pops on a stock exhaust. Did 2020 models have a change in tuning and exhaust hardware? Or is OP doing something that can cause this audible pop on stock exhaust... I merely presented a hypothetical.

Most ridiculous "debate" i have ever participated in -- let alone witnessed.
noobultimatum is offline   Reply With Quote
Old 02-16-2020, 12:29 PM   #30
GlarryHoodDIT
Scooby Specialist
 
Member#: 460907
Join Date: Jan 2017
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2016 WRX

Default

If you dont wanna post then dont post. It's simple. If you cant control yourself that's on you.


An extra second at WOT is going to do nothing averse to the engine. Who cares about it? Extra strain on the engine? Lol, what a joke. People go on track days, canyon runs, spirited drives, countless pulls, etc., and you wanna sit there with a straight face and tell me an extra half second between a quick and slow shift is gonna strain the engine? If anything, for the overall health of the entire powertrain it's probably better to shift slowly them slamming it in and out of gear at full load.
GlarryHoodDIT is offline   Reply With Quote
Old 02-16-2020, 01:32 PM   #31
noobultimatum
Scooby Newbie
 
Member#: 431550
Join Date: Oct 2015
Location: South Florida
Vehicle:
2016 WRX
ALL THE STAGES

Default

Quote:
Originally Posted by GlarryHoodDIT View Post
If you dont wanna post then dont post. It's simple. If you cant control yourself that's on you.


An extra second at WOT is going to do nothing averse to the engine. Who cares about it? Extra strain on the engine? Lol, what a joke. People go on track days, canyon runs, spirited drives, countless pulls, etc., and you wanna sit there with a straight face and tell me an extra half second between a quick and slow shift is gonna strain the engine? If anything, for the overall health of the entire powertrain it's probably better to shift slowly them slamming it in and out of gear at full load.
Lol ok. sure thing.
noobultimatum is offline   Reply With Quote
Old Yesterday, 01:17 PM   #32
rtv900
Scooby Guru
 
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:
2016 STI

Default

Quote:
Originally Posted by noobultimatum View Post
Unnecessarily revving the engine to a set speed only to essentially clutch kick it doesn't sound like it would be worse than just regular ol' FFS?
I'm even more confused after reading all these replies as to what you are thinking FFSing is.
And I'm seriously not trying to trash talk you.

You keep referring to "good old fashioned" flat foot shifting????? What do you mean? The only difference between 'old fashioned' flat foot shifting and modern vehicles that have the feature is that modern vehicles can do it without the risk of blowing up the engine if you are not LIGHTENING fast getting into gear.

I mean really, if you are doing this obviously it is going to be in a racing application, so presumably you are shifting pretty much at redline. If you are WOT at or close to redline and you depress the clutch full on WOT you are going to have a friggin nanosecond to get in gear before the motor blows straight through redline.

And either method, computer controlled or not, still does a 'clutch kick' or whatever you want to call it. You are just popping right out on the clutch and slamming into gear. So 'old fashioned' or not there's no difference there.

And 'holding at WOT' for a long period of time????? That's the whole point, you are holding down on the gas but the computer overrides that input and controls the throttle to maintain a set rpm, and the instant the clutch re-engages it allows true WOT at that point.
Nobody is talking about taking 5 or 6 seconds to do this, but even if you did, ok fine, the computer will just hold it at the set point.

This is the exact same feature as a modern launch control, which is nothing more than a computer letting a less skilled driver launch. You hold down the gas to the floor, the computer pulls back throttle at say 5000 rpm's to just hold that and then releases to full throttle when you let off the brake or the clutch depending.
It's the same concept, obviously you aren't truly at WOT while sitting still or the engine would just overrev and blow up or continually slam the rev limiter again and again.
rtv900 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 03:13 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.