|
BRZ First-Gen (2012+) -- General Topics All discussions about the first-gen Subaru BRZ coupe |
|
Thread Tools | Search this Thread |
08-24-2015, 03:46 PM | #29 |
Senior Member
Join Date: Jul 2015
Drives: 1991 Formula Red NSX
Location: Wisconsin
Posts: 483
Thanks: 271
Thanked 430 Times in 209 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
|
Picked up my BRZ this weekend and after driving it for most of the weekend, I feel like the accelerator pedal has some take up (thats the best way I can explain it). Like you have to depress the gas like an inch (arbitrary number) before the car realizes you're giving it gas. (If it were a drive by wire system, I'd say there's too much slack in the wire.)
|
08-24-2015, 03:58 PM | #30 | |
Senior Member
Join Date: Jun 2015
Drives: 2015 CWP BRZ Limited
Location: NOVA
Posts: 2,800
Thanks: 1,801
Thanked 3,946 Times in 1,757 Posts
Mentioned: 105 Post(s)
Tagged: 7 Thread(s)
|
Quote:
|
|
08-24-2015, 04:25 PM | #31 |
Senior Member
Join Date: Jul 2015
Drives: 1991 Formula Red NSX
Location: Wisconsin
Posts: 483
Thanks: 271
Thanked 430 Times in 209 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
|
Sorry, I mean cable.
|
08-24-2015, 06:08 PM | #32 | |
Senior Member
Join Date: Jan 2015
Drives: GT86
Location: UK
Posts: 305
Thanks: 246
Thanked 195 Times in 81 Posts
Mentioned: 2 Post(s)
Tagged: 1 Thread(s)
|
Quote:
I know it might seem weird that some bushings on the rear cross member would help with throttle feel, but a few people on here recommended it in other threads so I had a go and it did make a noticeable difference
__________________
My GT86 build so far:
AVO Stage 4 Turbo, Carrillo forged con rods, 10:1 CR Carrillo pistons, AVO 3 inch turbo back exhaust, Helix clutch, TheDriveShaftShop drive shafts, lightweight flywheel, NamelessPerformance hydraulic hand brake, KW V3 coilovers... and lots of other little bits |
|
The Following User Says Thank You to ChrisD For This Useful Post: | rookie (08-25-2015) |
08-24-2015, 06:24 PM | #33 |
-
Join Date: Nov 2012
Drives: '13 FRS - STX
Location: SF Bay Area
Posts: 10,376
Thanks: 13,768
Thanked 9,495 Times in 5,008 Posts
Mentioned: 94 Post(s)
Tagged: 3 Thread(s)
|
I agree there's lag in the pedal and a non-linearity that is frustrating, it's one of my least favorite things about the car, as posted in this thread I believe the most effective solution is a tune to remap the throttle, the AVO unit linked above looks interesting but I don't trust it (my own paranoia about plugging a box into my computer).
I don't think there's anything that will completely eliminate the dead spot and at least some lag will always exist but I would be surprised if it wasn't improvable. Highly considering an OFT for this along with a safer tune for an early car and some straightforward datalogging... |
The Following User Says Thank You to strat61caster For This Useful Post: | rookie (08-25-2015) |
08-24-2015, 11:00 PM | #34 |
Still 17!
Join Date: Jul 2014
Drives: 2014 Silver BRZ Limited
Location: HIGHLANDS, NC.
Posts: 162
Thanks: 121
Thanked 41 Times in 30 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
This delay in pedal response will go away after some miles.
To speed things along and sometimes bypass the process all together, it is recommended that you start the car and let it idle for a minute WITHOUT touching the gas pedal. Do this twice. Then drive for little while using smooth movements. No stabbing the pedal etc. One trip to work or the grocery store is all it takes me. (I have to do this when changing or adding a tune or battery unplug) The space between applying pressure on the pedal and getting a response should go down to zero. It does for me anyway. Hope this helps. PAX |
The Following User Says Thank You to MGPAX For This Useful Post: | rookie (08-25-2015) |
08-25-2015, 10:24 AM | #35 |
Senior Member
Join Date: May 2014
Drives: '14 Subaru BRZ
Location: Ontario Canada
Posts: 979
Thanks: 204
Thanked 409 Times in 260 Posts
Mentioned: 21 Post(s)
Tagged: 1 Thread(s)
|
I think a lot of people are mixing up throttle response and acceleration.
Put your foot to the floor in neutral and see how long it takes. Now do the same in an 80's pick up. Throttle response is the time it takes for the engine to rev after giving a throttle input. Honestly it's slightly disappointing in these cars considering the LFA is the king of throttle response.
__________________
Life's too short to drive a boring car
|
The Following User Says Thank You to HeadBanger For This Useful Post: | Plumbus (10-04-2020) |
08-25-2015, 12:16 PM | #36 | |
-
Join Date: Nov 2012
Drives: '13 FRS - STX
Location: SF Bay Area
Posts: 10,376
Thanks: 13,768
Thanked 9,495 Times in 5,008 Posts
Mentioned: 94 Post(s)
Tagged: 3 Thread(s)
|
Quote:
I own an '80s pickup, I've put 25,000 miles on it and I learned to drive a stick in it, with the cable actuating the throttle valve it has better "throttle response" than my FR-S, which lags to my inputs. The pickup truck does exactly what I tell it to do with minimal delay, there is progression in the pedal travel (also having more torque than an 86 helps too, thank you 2.4L for those extra 3 ft-lbs) whereas with my FR-S I can't tell the difference between 70% throttle and 100% throttle. I've rocked my foot back and forth in that range to see if passengers notice, not even the gf, who is very quick to point out when I'm doing stupid things. The 86 is not terrible (I've driven cars where I can put my foot on the gas and let off before the car accelerates) but it's there and switching back and forth (to the '80s pickup) makes it obvious to me. If you gave me the power to change one thing on the 86, it'd be replacing the drive-by wire throttle with a cable. Yup, I'd pass up more power, better fuel economy, even a better suspension or adjustable camber or magic weight reduction for a cable between my right foot and the motor. |
|
08-25-2015, 01:00 PM | #37 | |
Senior Member
Join Date: Jul 2015
Drives: 1991 Formula Red NSX
Location: Wisconsin
Posts: 483
Thanks: 271
Thanked 430 Times in 209 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
|
Quote:
The first situation is when I'm driving (say I'm doing 40 mph in 4th gear) and I give it more gas, it responds to my input fine and I don't really have an issue with this. The second situation (and where the issue arises) is when I'm off the throttle completely and decide to give it gas (such as when I'm starting from a dead stop, or coasting in neutral) the pedal has to travel some distance before the ECU knows that I'm telling it to go. And this is something that the ECU will eventually fix, at least somewhat? |
|
08-25-2015, 01:09 PM | #38 | |
Senior Member
Join Date: Jul 2014
Drives: 2020 Hakone
Location: London, Ont
Posts: 69,845
Thanks: 61,656
Thanked 108,289 Times in 46,456 Posts
Mentioned: 2497 Post(s)
Tagged: 50 Thread(s)
|
Quote:
Of course for somebody that is looking for every bit of performance they can get and mileage be damned this is a pain in the ass.
__________________
Racecar spelled backwards is Racecar, because Racecar.
|
|
08-25-2015, 01:52 PM | #39 |
Senior Member
Join Date: May 2014
Drives: '14 Subaru BRZ
Location: Ontario Canada
Posts: 979
Thanks: 204
Thanked 409 Times in 260 Posts
Mentioned: 21 Post(s)
Tagged: 1 Thread(s)
|
Honestly I've never noticed any of the issues being discussed.
__________________
Life's too short to drive a boring car
|
The Following User Says Thank You to HeadBanger For This Useful Post: | strat61caster (08-25-2015) |
08-25-2015, 02:01 PM | #40 | ||
-
Join Date: Nov 2012
Drives: '13 FRS - STX
Location: SF Bay Area
Posts: 10,376
Thanks: 13,768
Thanked 9,495 Times in 5,008 Posts
Mentioned: 94 Post(s)
Tagged: 3 Thread(s)
|
Quote:
At least with a cable it's easy to tighten up, with DBW you could reposition the sensor? I have no idea how the mechanism works but like I said that part doesn't bother me, a pedal that's always 'taut' would be nice but I'm used to not having it. Quote:
|
||
08-25-2015, 02:01 PM | #41 | |
Senior Member
Join Date: Jul 2014
Drives: 2020 Hakone
Location: London, Ont
Posts: 69,845
Thanks: 61,656
Thanked 108,289 Times in 46,456 Posts
Mentioned: 2497 Post(s)
Tagged: 50 Thread(s)
|
Quote:
I can see how it could be an issue for anybody tracking though.
__________________
Racecar spelled backwards is Racecar, because Racecar.
|
|
08-25-2015, 02:05 PM | #42 | |
-
Join Date: Nov 2012
Drives: '13 FRS - STX
Location: SF Bay Area
Posts: 10,376
Thanks: 13,768
Thanked 9,495 Times in 5,008 Posts
Mentioned: 94 Post(s)
Tagged: 3 Thread(s)
|
Quote:
Simply put I find it crazy that my "new sports car" has a less responsive throttle than my "80's pickup truck". It's conversations like this that make me want to go blow $500 on an OFT simply to get the throttle remapped (also the DI Seal fix), I'll try and drive my truck again this weekend for kicks it's been a few weeks as I'm starting to forget how good it feels... |
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Throttle Response | CamryDS | Northern California | 27 | 03-31-2015 03:35 AM |
poor throttle response | Djen | Engine, Exhaust, Transmission | 21 | 06-14-2014 01:22 AM |
poor throttle response | Djen | Electronics | Audio | NAV | Infotainment | 5 | 06-18-2013 07:31 PM |
Does the throttle response improve? | pr086 | Scion FR-S / Toyota 86 GT86 General Forum | 36 | 12-01-2012 01:06 PM |
How's the throttle response? | SFTiofoso | Scion FR-S / Toyota 86 GT86 General Forum | 9 | 08-14-2012 11:50 AM |