The "Pedal Dance" testing

[chris912]

idk if anyone has seen this because frankly i didn't look through all the posts on this thread, but i found this on youtube for those that wanted a video…

[ame="http://https://www.youtube.com/watch?v=CWXv7UNA7hg"]http://https://www.youtube.com/watch?v=CWXv7UNA7hg[/ame]

[DriftEm]

it looks like pedal dance is rpm sensitive, I had my tuner raise my idle rpm to 950 (got a light weight flywheel and it idles better at 950) and now pedal dance doesn't work

[200HP]

This is very helpful for those of us looking to track/autox the BRZ... thanks to all the contributors!

[glamcem]

Pedal dance worked for me yesterday with no problem.. I ended improving my best time by 1 second at Ridge Motorsports Park yesterday but I am not sure if it was the pedal dance or the ST43s or maybe combination of both

[Roadcone]

I'm wondering if this will fix my issue on hairpins in the mountains... at WOT on tight turns in 2nd gear the traction light will come on. I can feel it hoping and binding but the car bogs pretty hard when this happens and the last time i did this i thought i was going to have my buddies C6Z crawl straight up my tail pipe. I'm going to test this soon.

[???]

Hey this isn't exactly the right place to ask this question but I figured since it's a brake thread and u guys were mentioning ebd here I might as well ask here.... Apparently 08+ sti Brembo brakes for this car so long as u drill new holes in the rotors. I was told that sti brakes were heavily front biased vs the stock frs brakes. Also, improving brakes isn't as simple as just spending 7k on big brakes for front and rear. In fact, sometimes it worsen performance but prolongs consistency which isn't so important on a street car or on a car that isn't heavily tracked. Would there be any benefit to upgrading to those brakes or another bbk assuming you already have the tire problem taken care of? (since tires stop the car) this car is also light to it doesn't take a tremendous amount of effort to stop it. Say the car is a dd with several track days every year (10 for example) is there any upgrades available for master cylinders? How would a bbk affect performance with ebd and abs on and with the pedal dance?


For me, there is no glide in pulse and glide :p

[???]

I was also told the sti components were heavier which adds to rotational mass. Correct me if I'm wrong.


For me, there is no glide in pulse and glide :p

[CSG Mike]

Originally Posted by Roadcone

I'm wondering if this will fix my issue on hairpins in the mountains... at WOT on tight turns in 2nd gear the traction light will come on. I can feel it hoping and binding but the car bogs pretty hard when this happens and the last time i did this i thought i was going to have my buddies C6Z crawl straight up my tail pipe. I'm going to test this soon.

It sure will. So will an LSD :p

[CSG Mike]

Originally Posted by ???

Hey this isn't exactly the right place to ask this question but I figured since it's a brake thread and u guys were mentioning ebd here I might as well ask here.... Apparently 08+ sti Brembo brakes for this car so long as u drill new holes in the rotors. I was told that sti brakes were heavily front biased vs the stock frs brakes. Also, improving brakes isn't as simple as just spending 7k on big brakes for front and rear. In fact, sometimes it worsen performance but prolongs consistency which isn't so important on a street car or on a car that isn't heavily tracked. Would there be any benefit to upgrading to those brakes or another bbk assuming you already have the tire problem taken care of? (since tires stop the car) this car is also light to it doesn't take a tremendous amount of effort to stop it. Say the car is a dd with several track days every year (10 for example) is there any upgrades available for master cylinders? How would a bbk affect performance with ebd and abs on and with the pedal dance?


For me, there is no glide in pulse and glide :p

No effect. No upgrades that are plug and play for master cylinders.

Chances are, if you gotta ask about it, you don't need a larger master.

[Roadcone]

Originally Posted by CSG Mike

It sure will. So will an LSD :p

The stock LSD on this thing seems pretty tight. i get some pretty loud tire chatter driving around normally.

[CSG Mike]

Originally Posted by Roadcone

The stock LSD on this thing seems pretty tight. i get some pretty loud tire chatter driving around normally.

That it is, but it's still a torsen, so if you're spinning one wheel under corner exit or over rough surfaces, then you're not accelerating the way you should.

The computer, without the pedal dance, also functions as an e-diff, so it's braking the wheel that is spinning to help the torsen function, which is the blinking traction light you see. If you spin the inner wheel without the pedal dance, then the solution is the LSD. If the computer is being overly conservative (which is can be at times), then the pedal dance is the solution.

[7thgear]

Originally Posted by CSG Mike

That it is, but it's still a torsen, so if you're spinning one wheel under corner exit or over rough surfaces, then you're not accelerating the way you should.

The computer, without the pedal dance, also functions as an e-diff, so it's braking the wheel that is spinning to help the torsen function, which is the blinking traction light you see. If you spin the inner wheel without the pedal dance, then the solution is the LSD. If the computer is being overly conservative (which is can be at times), then the pedal dance is the solution.

correct me if i'm wrong


with the pedal dance (ebd disabled), when the torsen begins to be defeated (inner wheel spins), it (ebd) will not interfere and your car will enter into a state of having an"open diff"


this, however, in your opinion, is a better state than having ebd interfere


y/n

[CSG Mike]

Originally Posted by 7thgear

correct me if i'm wrong


with the pedal dance (ebd disabled), when the torsen begins to be defeated (inner wheel spins), it (ebd) will not interfere and your car will enter into a state of having an"open diff"


this, however, in your opinion, is a better state than having ebd interfere


y/n

Trail braking is more important to me, since the only time the e-diff kicks in is over high speed (120+mph) corners where it actually destabilizes the car. The E-diff, to me, is unpredictable, because the computer is interpreting my input into what it thinks i want, instead of giving me what I actually want. This may vary, as I know the diff will be open in some cases, and am giving the car input to accommodate that.

Simple answer is yes, I'd rather lose EBD and not have the e-diff, since neither are things I want. It's the same reason I find the C7 vette unpredictable with the e-diff.

[7thgear]

Originally Posted by CSG Mike

Trail braking is more important to me, since the only time the e-diff kicks in is over high speed (120+mph) corners where it actually destabilizes the car

well, I do get the blinking traction light on an overly dusty and "tight" autocross.


180* hairpins will almost universally cause the light to go on


and after reading the previous few posts I've started to wonder if I too feel like the car "bogs", just a little, in those situations.




I really should try to disable it... lol , with the proximity of light posts and curbs the possibility of icemode is a little freaky to me, much scarier than just sliding off into the grass on a track.