Throttle Controllers

[UncleFester]

It only makes a difference at part throttle. Full throttle there is no difference. Plenty of people have done 0-60 tests with and without and found no difference.

They are snake oil products IMO.

[xcelir8brz]

Worked great on my previous Honda Fit. Major stock lag.

[xjohnx]

Originally Posted by dwx

The drive by wire system is probably the same as used in the STi since 2004 and WRX since 2006. It's pretty good and there isn't really any throttle lag. Nobody installs these throttle controllers on those cars.

FWIW, 04 STi was still mechanical, 05+ got the DBW.

[vividracing]

To be honest. Stay away from these. Get a tune.

Outside of here I work in the motorcycle world. I see guys using these and even a few in the Subaru world that have had the gears jam on their throttle bodies from using these.

Plus you are only going to waste money if you going to get a tune anyways. Its one of the maps the tuner adjusts.

[TheRipler]

Originally Posted by dwx

The drive by wire system is probably the same as used in the STi since 2004 and WRX since 2006. It's pretty good and there isn't really any throttle lag. Nobody installs these throttle controllers on those cars.

One reason people don't use these on a Subaru is that they start out pretty good. The other reason is that once the ECU has been cracked, these become a paperweight with wires. Rather than trick a throttle, you can adjust it exactly as you please in the ECU.

[SkullWorks]

actually there are plenty of cable operated TB's that have a curve built in to the TB mechanism (example: Q45 TB that everyone uses) it scales the throttle so you can leave a light without burning the hides off the car, then after a ceretain point the curve goes linear and gets steep.

BACK TO THE CAR AT HAND:

the FRs/BRz seem to have throttle application limited at low RPM to limit torque (for economy or warranty I am not sure) that is the largest single benefit I could see from a device such as this, it may potentially allow full throttle opening at all RPM's, I will know for sure soon, waiting on my AEM patch harness from MPT.

[Jeff Lange]

Originally Posted by vividracing

To be honest. Stay away from these. Get a tune.

Outside of here I work in the motorcycle world. I see guys using these and even a few in the Subaru world that have had the gears jam on their throttle bodies from using these.

Plus you are only going to waste money if you going to get a tune anyways. Its one of the maps the tuner adjusts.

There's no possibility of jamming gears or anything with one of these controllers. All it does is tell the ECU you are pressing the gas pedal a different amount than you actually are. It's not doing anything you couldn't do yourself by simply pressing the pedal a different amount. The difference is how the throttle responds to how much you are pressing the pedal.

I've used many different brands of throttle controller from Blitz to Pivot, etc. Never seen any vehicle ever have an issue, and I find they work very well.

Jeff

[SkullWorks]

Originally Posted by Jeff Lange

There's no possibility of jamming gears or anything with one of these controllers. All it does is tell the ECU you are pressing the gas pedal a different amount than you actually are. It's not doing anything you couldn't do yourself by simply pressing the pedal a different amount. The difference is how the throttle responds to how much you are pressing the pedal.

I've used many different brands of throttle controller from Blitz to Pivot, etc. Never seen any vehicle ever have an issue, and I find they work very well.

Jeff

yuck, so reading this, you can't even trick the throttle to giving more angle than max allowed vs, RPM in the stock ECU?

bummer, officially useless, unless correcting drivability issues

[vividracing]

Originally Posted by Jeff Lange

There's no possibility of jamming gears or anything with one of these controllers. All it does is tell the ECU you are pressing the gas pedal a different amount than you actually are. It's not doing anything you couldn't do yourself by simply pressing the pedal a different amount. The difference is how the throttle responds to how much you are pressing the pedal.

I've used many different brands of throttle controller from Blitz to Pivot, etc. Never seen any vehicle ever have an issue, and I find they work very well.

Jeff

There is plenty of ways to do so. Ever taken a failed one apart or the magic box to see how it tics? The increase voltage makes the motor move faster then the gears are made for. Causes a bind and then a failure. I have replaced a ton of these. HD doesn't warranty TB's anymore unless a rep has inspected the bike. Same thing with Subaru. Its happened a few times.

Remember by me posting this..... I have more to loose in sales. I just do not want people to have issues. Sure it might work, it might work for a while. But when it breaks it gets $$$..

And like I said. This is all addressed in a tune anyways.

[Jeff Lange]

My point is that in the FR-S, the controller is not connected to the throttle body, it's connected between the pedal and the ECU. The ECU is controlling the throttle body. How is it possible to force the ECU to move the throttle gear faster than it's designed to?

All the throttle pedal does is input a requested throttle value to the ECU. I could definitely see an issue if the controller was actually controlling the TB motor, but that isn't the case here.

Jeff

[Martin Donnon]

Basically, hold it flat when you want to go quick - same performance delivered - money saved

[Calidrifter]

Iirc Moto is testing an Apexi one right now. Haven't checked on how that is going but I'm sure we will hear from him soon enough.

[mike2100]

Originally Posted by Martin Donnon

Basically, hold it flat when you want to go quick - same performance delivered - money saved

In a drag race, yes. Through a corner, no.

[SkullWorks]

Originally Posted by SkullWorks

actually there are plenty of cable operated TB's that have a curve built in to the TB mechanism (example: Q45 TB that everyone uses) it scales the throttle so you can leave a light without burning the hides off the car, then after a ceretain point the curve goes linear and gets steep.

BACK TO THE CAR AT HAND:

the FRs/BRz seem to have throttle application limited at low RPM to limit torque (for economy or warranty I am not sure) that is the largest single benefit I could see from a device such as this, it may potentially allow full throttle opening at all RPM's, I will know for sure soon, waiting on my AEM patch harness from MPT.

OK so we probed around last night, and the throttle isn't limited versus RPM, it seems to be about as direct of a correlation between throttle angle and pedal angle as you can get, no real delay on inputs no real scaling to speak of,

At redline it closes throttle, other than that it does as you ask under the test conditions we exposed it to, So i have to retract all my statements about thinking the Torque dip and throttle limits were inter-related.