Flatfoot or powershifting

[SSMS3]

Powershifted this car for the first time today and it makes a huge difference with uninterupted power delivery after the gear change by holding boost, but...
I have to wonder how much this helps because the car spins the tires completely thru 2nd and a portion of 3rd gear which seems counterproductive to forward motion

Has anyone compared shifting techniques back to back at the track or with a Gtech to be sure this is the quickest way to shift this car? (powershifting compared to throttle lift shifts)

Before anyone says it, I know this is hard on the driveline and would never practice this on a regular basis. If you powershift any stock-type car regularly, you will break something, I know from experience lol

 

[Karma_hunden]

it is the quicklest way. Just the fact you are not lifting the throttle and fallin into lower rpms/boost makes you quicker...no lifting, no pause/interval=faster.

and yes, like you said, its bad for the car. Especially if you do it to 1st and 2nd gear when going from a dig.

 

[oskinosmee]

i do it all the time ive raced a speed 3 stock and i have is an intake and i torn him a new ass by like 4-6 cars im not sure what he did or what the case was but he sworn me up and down that i had more work.

 

[blackshine007]

Mazda says that if you're gonna flat shift, do it from 2nd to 3rd, 3rd to 4th and so forth. I do it all the time. It's not bad on the car as long as you have good mounts and not grinding gears

 

[Karma_hunden]

Mazda says that if you're gonna flat shift, do it from 2nd to 3rd, 3rd to 4th and so forth. I do it all the time. It's not bad on the car as long as you have good mounts and not grinding gears

it is dude. I have seen toothless STi trannies because of it, and as we all know STi tranny > MS3 tranny. So you can only imagine. You can reduce the damage but not avoid it.

 

[Karma_hunden]

i do it all the time ive raced a speed 3 stock and i have is an intake and i torn him a new ass by like 4-6 cars im not sure what he did or what the case was but he sworn me up and down that i had more work.

you only have an intake huh? may I ask what you drive? a ///M5?

are you sure the "MS3" wasnt parked?

 

[ForceFed]

it is dude. I have seen toothless STi trannies because of it, and as we all know STi tranny > MS3 tranny. So you can only imagine. You can reduce the damage but not avoid it.

This is really not "Factual" Info..It is your opinion.

I have powershifted every car I have owned and if done correctly..you are no more likely to break anything than when standard shifting (lift to shift) the car.
The biggest jolt to the drivetrain is on the initial launch in first...Not many people know how to feather a clutch out of the hole well enough to reduce drivatrain impact yet still minimize wheel spin and get maxmun RPM's on the launch for best power.


Don't speak as if you are an authority on the subject.


Alos, An STi is also an AWD vehichle which puts even more stress on its components because it must overcome the traction of four tires Vs. two. Instead of just going up in smoke..they tend to break teeth.
Wrong comparison for this subject.
``

 

[Karma_hunden]

so when you are doing 50mph or more, where does that tension go, because you sure as hell arent burning rubber. the tranny absorbs it just like the STi's, regardless of the drivetrain. Yes, from a dig it would be different. But not from a roll. How would you minimize the damage of powershifting [to none] from a roll? please educate me.

 

[oskinosmee]

you only have an intake huh? may I ask what you drive? a ///M5?

are you sure the "MS3" wasnt parked?

look main man i just telling you what happened if u choose not to believe whatever but keep your mouth shut. i didnt say any about you or to why must you make comments like that.

 

[ForceFed]

so when you are doing 50mph or more, where does that tension go, because you sure as hell arent burning rubber. the tranny absorbs it just like the STi's, regardless of the drivetrain. Yes, from a dig it would be different. But not from a roll. How would you minimize the damage of powershifting [to none] from a roll? please educate me.

When powershifting from a roll..If done Smooth and right..there is almost no drivetrain impact...The RPM's stay up..They dont increase but by a few hunred if you are quick and the clutch engagement is quick,no slipping and precise. The gearing is close enough together at that speed that there is no "JOLT" or impact.

Taking off from a dig has the potential to do more damage than a powershift done right.

PERIOD.

 

[Karma_hunden]

look main man i just telling you what happened if u choose not to believe whatever but keep your mouth shut. i didnt say any about you or to why must you make comments like that.

what car do you have?

 

[oskinosmee]

what car do you have?

Ms3

 

[Karma_hunden]

When powershifting from a roll..If done Smooth and right..there is almost no drivetrain impact...The RPM's stay up..They dont increase but by a few hunred if you are quick and the clutch engagement is quick,no slipping and precise. The gearing is close enough together at that speed that there is no "JOLT" or impact.

Taking off from a dig has the potential to do more damage than a powershift done right.

PERIOD.

Hm, I have to disagree, i still think that no matter how smoothly it is done, it will still do some damage, because you are not forcing the clutch to adjust to the rpms you are just slamming it into an immediate force/rpm. If it was so good, then I believe it would be a popular way to drive [at WOT] and not a 'choice' IF you wish to go a bit quicker.

Just out of curiousity, do you think ripping shift it good? Do you do it?

no sarcasm in that btw, legitimate question.

 

[Karma_hunden]

Ms3

oh, i thought you were another guy spouting off about how the car on your sig with just an intake beat an MS3. I still doubt you couldve pulled him that bad with just a CAI. but oh well, it is possible, bad drivers are everywhere...

 

[oskinosmee]

my sentra was faster than my ms3 is at the time

 

[Karma_hunden]

true but i doubt it would be with an intake only lol

what were your mods?

 

[blackshine007]

Hm, I have to disagree, i still think that no matter how smoothly it is done, it will still do some damage, because you are not forcing the clutch to adjust to the rpms you are just slamming it into an immediate force/rpm. If it was so good, then I believe it would be a popular way to drive [at WOT] and not a 'choice' IF you wish to go a bit quicker.

Just out of curiousity, do you think ripping shift it good? Do you do it?

no sarcasm in that btw, legitimate question.

Ok, this quote basicly says that slipping the clutch is good. Which in reality, it heats it up causing more wear. That's not good. Stripped teeth on the STi's is mainly from idiots that sometimes use the clutch to get into gear. And when they were slamming into gear, they were not only taking out synchros, but grinding the corners of the gears right off in the process. I just tore up my trans recently from "ripping" the gears, which is basicly quick shifting but shifting hard into gears. I broke the coupler that holds the 1-2 shift fork. The gears from all my countless times of flat shifting were fine. So I won't be ripping it no time soon. But I will continue to flat shift because there's no more initial stress on the gears for me shifting at 8k rpm foot to the floor vs. taking it to 8k rpm, releasing the gas and shifting into gear. When you release, it's putting that same bit of torque back on the gears anyways. That's why my gears still looked good.

 

[SSMS3]

This whole ordeal has me looking into drag radials already lol
Definitely make some passes on the Bridgstones, but I know from experience that traction will be even worse at the track. BFG makes a 245-45-17 drag radial, hmmm...

On powershifting. Even if you know how to shift like a mofo, you will eventually break something if you do it repeatedly, I've seen it happen to many times with all brands of cars

Clutch slip, agree 100% with blacksunshine. You build more heat using that method, period. It's the quickest way to 60' on street tires, but it's also the hardest on the clutch. However, as others have said, personally I'd rather wear the clutch a bit by slipping it at launch than break a halfshaft, trans etc from clutch dumps

 

[blackshine007]

This whole ordeal has me looking into drag radials already lol
Definitely make some passes on the Bridgstones, but I know from experience that traction will be even worse at the track. BFG makes a 245-45-17 drag radial, hmmm...

On powershifting. Even if you know how to shift like a mofo, you will eventually break something if you do it repeatedly, I've seen it happen to many times with all brands of cars

Clutch slip, agree 100% with blacksunshine. You build more heat using that method, period. It's the quickest way to 60' on street tires, but it's also the hardest on the clutch. However, as others have said, personally I'd rather wear the clutch a bit by slipping it at launch than break a halfshaft, trans etc from clutch dumps

You're funny (spin)

I guess you haven't heard that Mazda's have durable drive shafts. We don't have the problems with drive shafts that Honda and others have. There's guys with Turbo Probes with over 400 hp still running the stock CV axles that haven't broken yet. Flatshifting won't hurt those axles

 

[SSMS3]

You're funny (spin)

I guess you haven't heard that Mazda's have durable drive shafts. We don't have the problems with drive shafts that Honda and others have. There's guys with Turbo Probes with over 400 hp still running the stock CV axles that haven't broken yet. Flatshifting won't hurt those axles

That's good to know!
I was referring to clutch dumps which can cause bad wheelhop and hop is what typically breaks halfshafts. I didn't mean to imply shifting would hurt them