I honestly think they mapped it that way to make the car feel more torque-y. A slightly bigger kick in the rear off the stop and then mellows out for a more linear delivery. Once the tunes and headers come out all will be right with the power curve / mapping. Generally these cars have the biggest gains in the mid range. I have no reason to believe it would be any different this time around just because of the extra .4 liters.

 

Hopefully the tunes will make the throttle less aggressive and more linear. I dont remember that being a thing on the 1st gen cars. Maybe just because low end torque was non-existent. I do love the dynamics of the car for sure. I had it in my head I wasnt going to let this one turn into mods... mods... more mods. But I dont think exhaust and a tune will be enough to keep me content.

 

I swore to myself to keep it basic; just mods that reduce weight, increase grip, reduce braking distance, and a pro tune.. we'll see what I'm feeling in a year. I honestly love the platform and don't want to regret going too far off the deep end just to do it.

 

Definitely 1st -3rd feels different on the throttle than 4-6. That being said I am going to leave mine alone the first year to see what options come out to make it more linear. It is still fun to drive as it is but could be better with the right tune and mods. It will be a great platform. I always looked at this car as a good starting point and a better starting point than the gen 1.

 

I think the throttle mapping is one of the bigger differences between the GR86 and BRZ. The BRZ is supposed to be more linear and the GR86 ramps up quicker - it’ll be interesting to see if the aftermarket tuned (which inevitably will remove the rev hang too) give you the option.

 

I've been noticing that when I let off the pedal in the 86 it's a bit jerky. Could that be related to the programming. I'm pretty light-footed with the accelerator and don't really push that far when daily driving.

 

These cars use the D4S injection system which use 4 low pressure injectors in the intake ports and 4 high pressure direct injectors. There are times the system will run with port only, DI only, both, or none of the injectors being used, especially during deceleration. Sometimes that transition is not very smooth and can be felt. I think that is what you are feeling.

 

I don't know about N/A engine cars. The after market on turbo cars have been really big on performance throttle pedals.
However, these are usually to combat initial turbo lag that affects most small engine turbo cars. Further electronic throttles seem to be one prevalent way to help control fuel economy/emissions. Sometime car manufacturers seem to do a decent job with while others are terrible. I'd say Subaru/Toyota are about in the middle.

 

A little more than 50% pedal input is definitely 100% open throttle. Even the AC compressor kicks off at around 50%.

 

Toyota throttle map is a lot more aggressive. It can make the car feel peppier but it really is more just annoying for reasons described. I imagine you’ll be able to flash to the BRZ map soon enough

 

Did anyone dribe the both cars side by side?

I have my car for 2 weeks now, and it annoys me. Its hard to drive not to fast. You just have to concentrate not to accelerate too fast.
Driving my 72PS Aygo is a real pleasure now.

Toyota should offer the BRZ mapping.

 

is there any way to change the throttle mapping to BRZ curve?

 

I would love this if this is possible. I dont like how our cars are WOT at 50% throttle.

 

I thought I was just getting old. This thing feels jerky and way to jumpy, 1st gear is like riding a wild stallion. It’s very annoying, why try to trick people into thinking it’s fast, it’s not, that’s why it dies out at higher gears and past 50% throttle like other say. It’s frustrating, it’s so hard to modulate.

 

There is two modes to the throttle that I am away of

1. 0 - 40 is normal and then nothing, maybe more noise?
2. 0 - 40 is normal, unless you are in turn, at which point, anything beyond initial input is replaced with 150% input and you suddenly find yourself looking through side window going forward.

 

I've been poking around the Ecutek discussions for this thing as I realize that will likely be the only solution for cleaning up the throttle map on these. Has anyone heard anything promising there?

I hate the idea of spending ~$1000 just for this. I feel no need for any other modification to how the car drives. Power is good with smooth delivery. Even the rev-hang, doesn't feel like there is any to me. Just this manic gas pedal.

 

You don’t find rev hang to be that bad? Personally I feel like 1-2 sucks and I’m sitting on the clutch for a minute until I can let it out

 

I dont notice rev hang at all and I have owned more manual cars than I can count over the last 25 years. The 1-2 shift does require and additional second or so for the revs to fall but that is because that shift has the farthest spread in ratio change, not because there is any lag or hang. Most of the time its shifting technique to blame.

 

I haven’t noticed rev hang (I sure did on my 2019 WRX) and don’t hate the initial throttle action. But it’s just wrong that the last inch or two of pedal travel does nothing. If you’re flooring it, RPMs should drop when you start to lift off. But in this car that doesn’t happen for about an inch or two from the floor.

 

I think for me what makes the rev hang worse is slow speeds. Faster speeds are fine, but anything at slower speeds I’m sitting on the clutch.

Biggest thing I’ve noticed is pushing in the clutch raises my RPM 1-300. For example if I’m in a drive through going a couple mph in 1st, gas out, clutch in, and RPMs kick up.

Happens in all gears, so takes even longer for them to drop enough. Thought I was crazy and just tapping the gas for longer than I should, but even with exaggerated motions it happens.

 

My rpm do not raise between gear shifts. They fall immediately. I did have this happening when I 1st bought the car though. Every car likes the clutch\throttle timing a little different these days with everything being electronic. My mazdas like the pedals moved at the exact same time. Fords need you to come off the throttle long before pressing the clutch to avoid rev creep\hang. My BRZ seems to be fine with lifting off throttle just a split second before clutching in. If you are late off the throttle or try working the gas\clutch at the exact same time you will see lag as described. Its just the delay in the throttle response that we have all noticed. Compared to most modern manual cars, the twins are FAR better.

 

Interesting to know, wonder if that’s something tunable then, Delicious did mention “improved throttle response”. I have a buddy who‘s been taking care of my car on and off, so he has plenty of seat time. He’s got a 2016 STI and for him the rev hang is noticeably there unless you‘re up in 4th gear. Think the rev creep has much to do with it, since 1-3 gears I can count about a second between the revs drop to the appropriate amount.

 

In the past Delicious liked to tune in what they called "race throttle" which basically made the throttle hyper active. IMO the throttle is already stupid sensitive and amplifies your inputs far too much. I sure hope they dont go that route again. I would love the throttle to be dialed back some. Just make it linear and do what my foot tells it to. Dont lie to me trying to make the car feel faster than it is because when I request 10% throttle it gives me 50%

 

Is tehre any way, we can contact Toyota and tell them, that some of us may want to use the car for every day driving?
Maybe they can release an optional update?

 

Unlikely, but it is possible that later model years will have improvements. (Very sorry that you will only get one additional model year .) If that happens, then you will need to find some way to justify the dealer updating your ECU to be like the newer cars. A TSB is probably the only legit route to having the dealer flash to newer settings like that.

It seems far-fetched, but this actually happened with my WRX. I was at wits end with how hard it was to drive smoothly. Touchy throttle, rev-hang, lumpy power delivery. A Cobb AP tune, which could fix all of that seemed inevitable. Then the '16s came out. They drove so differently, way better. As luck would have it, there was a TSB to address engine knock (it eventually became a recall) that resulted in newer/better software being applied to the '15s. It took a little convincing of the dealer service manager but I got the update and mostly forgot about doing a tune after that. I think the odds of this happening for the GR86 are much slimmer, but worth a watch.

 

So now that I have put some miles on the car, Im curious if anyone else has the same feelings as me about the stock throttle mapping. What I notice is that the throttle is super sensitive initially and then basically dead past 50%. It took me a while to get my take offs and shifts smooth because the tiniest tap of the throttle sends the revs flying up. When I push the throttle about 5% it seems that the ECU tells the throttle to go like 30% open. Then on the flip side of that any pedal position between 50% and wide open basically feels the same to me. I know many manufacturers use this tuning method for underpowered, slow cars to make it seem like there is more punch than there really is. On a car like this it makes it hard to get smooth progressive throttle control. I really hope a tune makes this more linear. It feel like it has one of those goofy pedal commanders on it making the throttle hyperactive.
Anybody else....?

I noticed that after half throttle in was dead as dead useless

 

Still no solution?

 

Sounds like some people found success with pedal commander. That seems to me a little wonky, maybe make one characteristic better but others worse. A tune will be the way to go.

Having spent a lot more time driving the car I’m able to get pretty used to it. The hardest thing for me was getting the right amount of throttle blip for downshifting. Compared to the usual blip you’d give a manual car (especially a sporty one 😡) this car needs a slow and deliberate blip. I still don’t get it right anywhere near as consistently as I did in my WRX or now in my Corolla but I’m getting there.

 

For me, with the AT, it seems that there is big throttle lag the first 1/8th -1/4 throttle then it goes to 50% and then at 50% it is at 90%. I have ordered the sprint booster. The mapping is not linear and that is not optimal but the throttle lag is worse. I will report after next track event.

 

I like the sprint booster demonstrations. Hopefully it works as well as they claim.

 

MAX ORIDO SENSITIVITY MAX FOR TOYOTA GR86 ZN8 MAXORIDO-00001

I found the MAX ORIDO SENSITIVITY MAX which is a different implementation to the pedal commander and sprint booster stuff. Instead of intercepting the pedal position and sending fake data to the ECU, it intercepts the throttle position from the ECU and controls the throttle directly. At least I think so. Might be an interesting alternative if someone doesn't like the idea of the other stuff.

 

MAX ORIDO SENSITIVITY MAX FOR TOYOTA GR86 ZN8 MAXORIDO-00001

I found the MAX ORIDO SENSITIVITY MAX which is a different implementation to the pedal commander and sprint booster stuff. Instead of intercepting the pedal position and sending fake data to the ECU, it intercepts the throttle position from the ECU and controls the throttle directly. At least I think so. Might be an interesting alternative if someone doesn't like the idea of the other stuff.

Interesting. Thank you for posting that. I don't understand enough about automotive electronics and ECU. I looked at their website and couldn't understand how they were inferring that the device works. I understand there's a little bit of problem in the translation.

 

Ah, interesting. I found a YT video of someone who installed it. Translate does a crap job of keeping up but his main point seems to be that it makes it easier to get going from a stop. Funny thing is that's where I have the least issue with the car. Very easy for me to drive smoothly now, just want better downshift blip control. I wouldn't roll the dice on it but would love to hear from anyone that gives it a try. If you're having trouble getting going smoothly it might be up your alley.

Last concern about it I'd mention is that if the USDM throttle map is any different, this thing could act up goofy. All it knows is "when the ECU sends signal X, I send signal f(X) to the throttle body."