Can anyone elaborate on Openflash Tablet "improved drivability"?

[jvincent]

Originally Posted by Turdinator

Hmmm just thinking out loud here, maybe it's the clutch or more accurately clutch feel. Does the FRS have a softer, longer throw or more wooden feeling clutch than the MX5?

I am wondering if the clutch isn't fully engaged when it feels like it should be to you.

The "from the factory" clutch height on the FRS is terrible and it has a long travel before it engages.

There's a DIY on how to change the height. I know that I was much happier after lowering mine.

[Formula Vee]

Originally Posted by jvincent

The "from the factory" clutch height on the FRS is terrible and it has a long travel before it engages.

There's a DIY on how to change the height. I know that I was much happier after lowering mine.

Done, but not the issue I'm experiencing.

Everything points to a clutch delay valve, even though I haven't actually seen confirmation that one exists. (And even though most people don't notice what I and a few others are nothing.)

[hmong337]

I think what the OP is descibing is drive-by-wire delay. I, like the OP, can feel this too. When changing gears and getting back on that throttle, there's that ever so slight delay before it kicks in. As all my cars previous were all older and drive-by-cable, DBW was something I had to get used to.

[Formula Vee]

Originally Posted by hmong337

I think what the OP is descibing is drive-by-wire delay. I, like the OP, can feel this too. When changing gears and getting back on that throttle, there's that ever so slight delay before it kicks in. As all my cars previous were all older and drive-by-cable, DBW was something I had to get used to.

I'm not so sure. If it were just the drive-by-wire setup I think I'd feel the surge/kick/lag whenever I eventually decided to get on the throttle. As it is, I only feel those effects if I try to get on the gas right after letting off of the clutch. Presumably the clutch should be totally disengaged by then, but my experience suggests otherwise. I wouldn't expect delaying throttle input to help with drive-by-wire lag, but it helps with whatever I'm experiencing.

I did come from ten years of driving with a cabled-throttled car, but I also spent a good amount of time in an NC Miata -- which is wire-throttled -- and never noticed anything like what I'm seeing here with the BRZ.

The weirdest thing about all of this is that there seem to be a few people here who have the same problem, as seen in the links I posted, but plenty of people don't. (Or they just don't notice it, which seems unlikely in an enthusiast community like this one.)

[troek]

Originally Posted by robwbright

What speeds are you driving to get 35-36 mpg? I rarely see above 30.5.

About 130kph with no a/c. I drive very light on the throttle. and i also have 16" wheels, if that matters.

[continuecrushing]

Originally Posted by Formula Vee

Done, but not the issue I'm experiencing.

Everything points to a clutch delay valve, even though I haven't actually seen confirmation that one exists. (And even though most people don't notice what I and a few others are nothing.)

Originally Posted by Formula Vee

I'm not so sure. If it were just the drive-by-wire setup I think I'd feel the surge/kick/lag whenever I eventually decided to get on the throttle. As it is, I only feel those effects if I try to get on the gas right after letting off of the clutch. Presumably the clutch should be totally disengaged by then, but my experience suggests otherwise. I wouldn't expect delaying throttle input to help with drive-by-wire lag, but it helps with whatever I'm experiencing.

I did come from ten years of driving with a cabled-throttled car, but I also spent a good amount of time in an NC Miata -- which is wire-throttled -- and never noticed anything like what I'm seeing here with the BRZ.

The weirdest thing about all of this is that there seem to be a few people here who have the same problem, as seen in the links I posted, but plenty of people don't. (Or they just don't notice it, which seems unlikely in an enthusiast community like this one.)

I'm with you on this...I LOVE the car, but the clutch/gas pedal annoy me to all ends.

But op, the car feels great and the oft is one of the first things you should do to the car.

[Kronos]

I've got local forum member who I am meeting up with soon who is interested in the OFT.
I am running the E85 tune which he is interested in checking out. Im probably going to let him take it for a spin.
Ill be in the passenger seat and ill record his impression as he is driving it if he is ok with me recording it.
It will be probably be helpful to some to hear someones impressions in a more organic setting as its actually happening.
Ill hopefully have this up in the next week

[leicaboss]

I haven't gotten around to flashing my new BRZ, but on the FR-S my MPG decreased... because the car was way more fun to drive!

[mid_life_crisis]

Originally Posted by leicaboss

I haven't gotten around to flashing my new BRZ, but on the FR-S my MPG decreased... because the car was way more fun to drive!

I've had the same problem ever since I started driving home in full manual mode.

[Freshfrs86]

Originally Posted by Funktional

I only have one significant driving day with my OFT and in all honesty, my butt dyno didn't register any gains. That being said, it honestly feels like a much more refined car with stage 1 on 91 octane. Throttle response is improved considerably. It idles smoother and the torque dip is not nearly as big of a factor. Also, there's a mountain route I like to take for a fun drive on a nice day and I've driven it quite a few times in my FR-S since purchase but when I drove it after the stage 1 flash I noticed that the vehicle was much more tail happy in turns. I think the 10-15 extra foot pounds of torque in the dip area are the culprit there. Lastly, I can't seem to wrap my head around it and the mechanic/engineer in me can't seem to justify the claim but I swear the gearbox shifts smoother now........maybe it's in my head but maybe it also has something to do with how the engine responds when the clutch is depressed and the way this affects syncro engagement? No clue really but it's definitely not just in my head.

Also, I noticed an immediate drop in the average MPG based on the trip computer's readout. Could be a factor of many things (Including my increased penchant for stomping on the gas with the new tune) but it's there so I feel like I should at least mention it.

Overall, very impressed with OFT and the results. Looking forward to adding an OFH to kill the torque dip completely with stage 2.

+1 I actually have catless headers running E85 stg2 tune and the response is there no matter the gear!

[leicaboss]

Okay, so running Stage 1 on the new BRZ here... honestly given normal highway commuting, I'm getting almost identical MPG, and in some cases the flashed ECU is helping deliver better gas mileage which is a bit strange (unexpected, but good). Overall, I don't think I'll be seeing a big impact. Throttle response is good, so it's easier to feel like you're going faster, when in actuality you just need to modulate your foot a little bit more so you're not constantly WOT (it's tempting).

[Mooseknuckle44]

OFT?
OFH?
OTS?
I've read this entire post, written mostly in Chinese and Middle Flemish and l'm totally lost.
New to the tuning scene but l like everything l'm reading(the stuff l comprehend anyways).
All l've got is the N1 catback on mine. What tune would work best for DD and occasional mountain runs, and where would l find said tune?
I'm nearly computer illiterate so l'm a blank slate when it comes to learning this stuff.
Thanks in advance for any and all help.


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[jvincent]

OFT = open flash tablet
OFH = open flash header
OTS = off the shelf

The tune you use is based on the configuration of your car. From your description you need a stage 1 tune.

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[Mooseknuckle44]

Originally Posted by jvincent

OFT = open flash tablet
OFH = open flash header
OTS = off the shelf

The tune you use is based on the configuration of your car. From your description you need a stage 1 tune.

Sent from my Nexus 5 using Tapatalk

Thanks very much!! Does altitude factor into these tunes?


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