GR86 Overly sensitive throttle mapping - Solution found :-)

The car drives better. This XLR5 Race Chip throttle controller and a HKS LEGAMAX Premium Axle-Back exhaust box are my only mods. The transitions between on, off and back on the throttle are better too as are gear changes. Pushes out of bends, (in Sport mode) far better too. Race + on the road is a bit too bonkers.
 
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I've decided I'm going to return my XLR. I've given it a couple of weeks, but not been able to settle with a mode which I can live with all the time.
The Eco setting makes the car easier to drive day-to-day, no doubt; but I found it dulled the response a little when pushing on.
The Sports setting was nicer in that regard, but not much different to stock in my opinion...but I couldn't get used to it, it still just didn't feel quite 'right'.

I went for another drive on Sunday morning and after fiddling with the modes and the fine tuning, I found that turning it off entirely and reverting to stock actually gave me the nicest experience. I don't doubt that the XLR will help a lot of other people, but I'm not convinced that it's fixed the underlying issues - even with the calibration, the pedal still feels like it should have a shorter throw, and there's still the slight stammer when picking up from low revs sometimes. I've no doubt that this gadget will help others by making that easier to manage - but I can get a bit anal about things like this, and I know for a fact that if I keep it, I will spend the rest of my time with the car constantly fiddling and adjusting modes. I think I'd rather live with the less than perfect stock throttle (which I'm at least used to) for now, until maybe I get it properly remapped at some point in the future.
 
KobayashiMaru86 said:
It only masks it. Mapping is the only true solution.
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Yeah, I kind of expected that to be the case, which is why I made sure not to properly attach it, and kept all the packaging.
Still, a return seems no problem, so no harm in giving it a try. Evidently others are more than happy with it.
 
I'm glad people are trying things though. My issue is I need to start using it more but haven't been because the road entrance into work is abysmal and isn't worth risking the wheels. I do find I get used to it quick enough once I'm driving it more than once a week.
 
Conscript said:
I've decided I'm going to return my XLR. I've given it a couple of weeks, but not been able to settle with a mode which I can live with all the time.
The Eco setting makes the car easier to drive day-to-day, no doubt; but I found it dulled the response a little when pushing on.
The Sports setting was nicer in that regard, but not much different to stock in my opinion...but I couldn't get used to it, it still just didn't feel quite 'right'.

I went for another drive on Sunday morning and after fiddling with the modes and the fine tuning, I found that turning it off entirely and reverting to stock actually gave me the nicest experience. I don't doubt that the XLR will help a lot of other people, but I'm not convinced that it's fixed the underlying issues - even with the calibration, the pedal still feels like it should have a shorter throw, and there's still the slight stammer when picking up from low revs sometimes. I've no doubt that this gadget will help others by making that easier to manage - but I can get a bit anal about things like this, and I know for a fact that if I keep it, I will spend the rest of my time with the car constantly fiddling and adjusting modes. I think I'd rather live with the less than perfect stock throttle (which I'm at least used to) for now, until maybe I get it properly remapped at some point in the future.
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Agree. Though, I keep in Sport mode as very first part of throttle travel is softer and the later travel parts come on stronger. I can drive better and quicker as I feel the control is better at very high revs. Standard at high revs felt on off and abrupt for prolonged high revs on road driving.
 
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KobayashiMaru86 said:
It only masks it. Mapping is the only true solution.
Click to expand...
@KobayashiMaru86 and @Conscript Agreed, the underlying issue is a quirk map but for me (with short legs) the XL5R throttle controller in Sport mode drives better. The first 10mm of movement is softer damped then it builds up sharpness and on on and off transitions and holding of steady throttle and/or modulation around 6000 rpm is more controllable. Before I disliked the original response at 6000 - 7000 rpm and I hated going near redline. Now the car is a hoot. Not like my AE86 was back in the day but more the car is more like it should be. Each to their own though. Finally I also unplugged that horrible fake engine noise and I am happy now to let the car rev on now, the fake noise made the engine seem harsh, it is not. Wish I’d done these things 6000 miles ago.
 
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KobayashiMaru86 said:
I'm glad people are trying things though. My issue is I need to start using it more but haven't been because the road entrance into work is abysmal and isn't worth risking the wheels. I do find I get used to it quick enough once I'm driving it more than once a week.
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@KobayashiMaru86 I jump between my Cayman, with butter smooth throttle, and GR which have I found harsher but now the XLR5 sorts the GR out enough for me.
 
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Forgot to say ^ I disconnected the battery so that makes the ECU relearn fuel trims etc. Not sure if it’s helped or not. But as I say car is driving better for with the XLR5 fitted.
 
Noel McC said:
@KobayashiMaru86 and @Conscript Agreed, the underlying issue is a quirk map but for me (with short legs) the XL5R throttle controller in Sport mode drives better. The first 10mm of movement is softer damped then it builds up sharpness and on on and off transitions and holding of steady throttle and/or modulation around 6000 rpm is more controllable. Before I disliked the original response at 6000 - 7000 rpm and I hated going near redline. Now the car is a hoot. Not like my AE86 was back in the day but more the car is more like it should be. Each to their own though. Finally I also unplugged that horrible fake engine noise and I am happy now to let the car rev on now, the fake noise made the engine seem harsh, it is not. Wish I’d done these things 6000 miles ago.
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Does the XL5R affect / improve the throttle blip action?? On the stock car it feels like a gentle blip gets little or no reaction and a decent shove sends the rpm flaring- feels really tricky to modulate in a standard car 🤷‍♂️
 
jb1750 said:
Does the XL5R affect / improve the throttle blip action?? On the stock car it feels like a gentle blip gets little or no reaction and a decent shove sends the rpm flaring- feels really tricky to modulate in a standard car 🤷‍♂️
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I'm not sure that it did, but I didn't test it extensively.
 
jb1750 said:
Does the XL5R affect / improve the throttle blip action?? On the stock car it feels like a gentle blip gets little or no reaction and a decent shove sends the rpm flaring- feels really tricky to modulate in a standard car 🤷‍♂️
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@jb1750 in race mode yes definitely. In Sport + too. Pedal box layout not ideal for heel-and-toeing though, Porsche (floor hinged) throttle is.
 
Drive for over a week now with XL5R and I like it it helps the drive. Disconnected that real horrible fake engine noise thing and with the XL5R the use of the entire rev range is more usable. HKS is quite but loud enough so no need for crappy harsh fake engine noise. Clutch pedal spring on order now should have the car the way it should have been for my tastes.
 
Still love XL5R throttle controller. Now also fitted the lighter and way better clutch pedal spring.
Wow what a nice difference
 
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With this recent XLR5 controller and the GKTech clutch pedal spring fitted (and as I’ve HKS back box, I’ve now the horrible fake Engine Noise Off too).

I can now undoubtably now say it’s only now that I’ve fully gelled with the cars driving now, which I’ve had for a year, that is how much better it all is now for me 👍

 
I also installed a throttle commander.
This only slightly improves the accelerator pedal input, if at all.
My experience shows that the accelerator pedal response becomes increasingly aggressive over time.
This continues until you can no longer maintain a constant speed in urban areas because too much throttle is being applied.

If you perform a throttle reset after months of driving, the car feels completly different.
In a good way.
The throttle response is smoother, gear changes are much smoother, and the revs drop more quickly at lower engine revoutions:
Does anyone else have the same problem or is the accelerator pedal defective?

PS:
Throttle reset = turn on the ignition, full throttle 5x times, start the engine and let it idle for 30 seconds.
 
Update throttle jerks the kangaroo mad po-go lurches during acceleration still happen. I hate it.
 
Please avoid posting the same question/issue in multiple threads as it dilutes its effectiveness. Thank you.
 
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Sonic said:
Please avoid posting the same question/issue in multiple threads as it dilutes its effectiveness. Thank you.
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Hear what you are saying. Though, some truth in that, I won’t fully agree. Different members in different threads see it. Issue is really bad in my car and know there can reluctantly to aid as owners don’t want car to have or get a bad reputation. So a) don’t think less chat helps and b) it’s such a spoiler of the car that I really dislike the silly hammer stammer kangarooing it mad. I drove my Cayman for a month and after getting back in the 86 I realise how bad and annoying the throttle lurching is. Come on Toyota give us the BRZ map. Though don’t know if BRZ kangaroos too.
 
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