Improve throttle response - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Poodles · 01-30-2015, 06:57 PM

Quote:

Originally Posted by Chrono

I'm sorry, but ignore everything else in this thread and get a K&N air filter. Problem solved.

Enjoying our placebo pill are we?

Burrcold · 01-30-2015, 09:30 PM

Quote:

Originally Posted by Chrono

I'm sorry, but ignore everything else in this thread and get a K&N air filter. Problem solved.

xia · 01-30-2015, 09:55 PM

It's a slow car, what'd you expect?

Mim · 01-30-2015, 10:20 PM

If not wanting to effect warranty then lighter wheels / tires (to reduce un-sprung weight), drop in air filter, aluminium drive shaft and change your diff ratio. OFT or a custom tune would also do wonders, but impact on warranty. All said and done though mine is pretty good and seems to be improving as I wind on the km.

Kiske · 01-30-2015, 11:17 PM

throttle controller http://www.avoturboworld.com/avoshop...2007-p-58.html

Jfheisenberg · 01-31-2015, 12:06 PM

It seems pretty responsive to me.. I have like two days driving the brz and it does not feel slow like many people claims to be. it pulls hard and sound sweet even as stock!

Speed2th · 01-31-2015, 12:14 PM

i think my BRZ low end is pretty responsive and that is what sold me the car. 3k-5k felt pretty pathetic however and that is the famous power dip

kilohercas · 02-02-2015, 02:19 PM

Quote:

Originally Posted by Speed2th

i think my BRZ low end is pretty responsive and that is what sold me the car. 3k-5k felt pretty pathetic however and that is the famous power dip

It is nearly impossible to get any dip in power/rpm (or get negative number from derivative of power curve) .
Torque is what is dipping, and it only ~15lbf*ft, that is 10%, anyway, in few mouths i should get BRZ and experience terror myself of that famous dip

SkAsphalt · 02-02-2015, 02:35 PM

What you could buy that would actually make a difference. All of these combined would basically make a NA short track monster for sure.
1. A tune
2. High quality headers
3. light weight fly wheel
4. Light wheels
5. Light weight drive shaft
6. New rear dif (to shorten the gearing)
7. Throttle controller
8. Light weight crank pulley
9. High quality air filter
10. Clutch adjustment on the manual (feels nice, it helps)
11. larger downpipe/mid pipe (the back end really is all for sound)

stugray · 02-02-2015, 02:41 PM

Quote:

Originally Posted by kilohercas

It is nearly impossible to get any dip in power/rpm (or get negative number from derivative of power curve) .
Torque is what is dipping, and it only ~15lbf*ft, that is 10%, anyway, in few mouths i should get BRZ and experience terror myself of that famous dip

Umm, HP = (Torque X RPM)/5252

So saying the HP does not drop, but the torque does is nonsense.

It's like those people who say "It's not the volts that gets ya, its the AMPS".

kilohercas · 02-02-2015, 03:26 PM

Quote:

Originally Posted by stugray

Umm, HP = (Torque X RPM)/5252

So saying the HP does not drop, but the torque does is nonsense.

It's like those people who say "It's not the volts that gets ya, its the AMPS".

Torque is dipping 10%, so power should dip too, but it stays nearly flat.

And yes, only current is killing. two different persons can have different effect on same voltage, but will have same exact effect on same current, due to variations in resistance.

Braces · 02-02-2015, 03:38 PM

Try sprintboostersales.com. Not sure they have an application for the twins. Pretty popular with the R8 crowd.

stugray · 02-02-2015, 05:22 PM

Quote:

Originally Posted by stugray

Umm, HP = (Torque X RPM)/5252

So saying the HP does not drop, but the torque does is nonsense.

It's like those people who say "It's not the volts that gets ya, its the AMPS".

Quote:

Originally Posted by kilohercas

Torque is dipping 10%, so power should dip too, but it stays nearly flat.

And yes, only current is killing. two different persons can have different effect on same voltage, but will have same exact effect on same current, due to variations in resistance.

It does not work that way.

HP = (Torque X RPM)/5252

If torque dips, so does power (UNLESS you have a corresponding increase in RPM).
So IF you change the Torque at a given RPM, you also change the HP.
You cannot change one without the other (at a given RPM).

But since we are not talking about one point in time (fixed RPM), then saying "dip in torque" is ambiguous.
Is it a "reduction of torque at a given RPM"
or is it "lower torque through the same RPM range"?
or "Torque decreased as RPM increased" which might be a constant HP

And as far as the current vs voltage:
Current differs from voltage by a constant R.
So current and voltage "track together". (they differ by a constant)
So I can argue that since the Voltage DRIVES the current, it is the voltage that kills you.
OR I can argue that Current is DEPENDENT on Voltage and Resistance So the current kills you.
OR I can say that it is your body's resistance that kills you because IT is what lets the current flow.

See all three comparisons are meaningless.
In truth, it is the POWER that is dissipated across the resistance in your body that kills you.

MGPAX · 02-05-2015, 01:06 PM

...."It's the watts!" LOL

01-30-2015, 10:20 PM	#18
Mim Senior Member Join Date: Apr 2013 Drives: MY11 Maxima 350st, MY15 BRZ Location: Sydney, Australia Posts: 534 Thanks: 304 Thanked 342 Times in 185 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	If not wanting to effect warranty then lighter wheels / tires (to reduce un-sprung weight), drop in air filter, aluminium drive shaft and change your diff ratio. OFT or a custom tune would also do wonders, but impact on warranty. All said and done though mine is pretty good and seems to be improving as I wind on the km. __________________ MY15 CWP A/T BRZ \| Leather heated seats \| STI CAI filter, A/T leather shifter, strut brace, V-brace, draw stiffener, battery tie down, Radiator cap, Oil cap, push start button \| TRD door stabilizer \| YoSpeed STI console garnish \| Pioneer AVIC-F70DAB + Rev-camera, TS-WX710A sub \| JL speakers, Amp \| TOMS' Clear Brake Lights \| Cusco 4.556 FD \| Driveshaft Shop aluminum shaft \| Tein FlexZ, EDFC AP+GPS \| Crawford BPB

01-30-2015, 11:17 PM	#19
Kiske Senior Member Join Date: Jun 2013 Drives: RX-7 / BRZ Location: USA Posts: 2,343 Thanks: 1,026 Thanked 2,501 Times in 1,081 Posts Mentioned: 27 Post(s) Tagged: 0 Thread(s)	throttle controller http://www.avoturboworld.com/avoshop...2007-p-58.html __________________ //2013 World Rally Blue BRZ Limited FBM Turbo--gone //2018 Crystal White Pearl BRZ Ts 2.2l Harrop Supercharged

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02-02-2015, 03:38 PM	#26
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MGPAX 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)	...."It's the watts!" LOL

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