Throttle Position

[Frogman]

i had a search and couldn't find anything on throttle position... or actual throttle postion...

i have noticed that with the ipod program Rev i only get 81% throttle position now matter what gear or speed when i floor it. Could it be that its caused by the differing voltage? could it be that its because of the stock setup? has anyone else noticed it? and has anyone with a throttle controller got any scan tool to find out their throttle position?

another stupid question: could it be that with a throttle control i could 100% throttle position?

cheers :D

[Ayu452]

it could be some kind of tuning thing....
i got the scangauge i think the highest it goes is 88
or something if i put my foot flat tack...
i would assume every car could vary.

[Macca]

it was discussed in one thread and no one got above 8X% myelf included

best ask ryan, but he doesn have scan gauge

[Corosith]

Means exactly that - 81% throttle, probably set like that from the factory to dull down the throttle response to cut the amount of wheelspin when accelerating (plus improve economy). The Blitz or pivot throttle controllers set on sports mode should be able to accesss the full range of throttle control versus the 81%!! from the factory.

[Frogman]

Maybe it's time to get a blitz controller :D

[Turbo_Tim]

Who really believes the car is only giving 81% of throttle. Surely not. Im sure they wouldn't be that silly from the factory, its not good for power, its not good for economy etc. You would think surely it would just be a voltage or output difference with the scan guage.

My brother used to have a similar story with his gti-r, consult used to bring up 110% injector capacity even on stock boost (therefore airflow through the afm) just due a difference in the ecu and software setup to the s13 it was designed for.

[lovecolt]

I'm not sure how true is this 8x% throttle thing, but if it is.....does that mean our 113kw's based on the 8x% and will be more if its at 100%??

More than welcome for anyone to bring their scangauge and hook it up my car to see if the throttle controller actually changes that...

[Corosith]

The scangauge is reading straight off the ECU, I don't think it is making any interpretations on what percentage of throttle it should be - simply showing it as is! Will have a look at mine again today to see what I can get up to.

I guess if we always had 100% throttle available, there wouldn't be any need for a throttle controller - except for changing the response./sensitivity of the throttle ie. gets rid of the delay that our electronic throttles have after lifting off the acelerator pedal.:)

[lovecolt]

I guess if we always had 100% throttle available, there wouldn't be any need for a throttle controller - except for changing the response./sensitivity of the throttle ie. gets rid of the delay that our electronic throttles have after lifting off the acelerator pedal.:)

But.....but....the throttle controller's never about full throttle anyway. Its exactly meant for the later, which is the important bit ;)

[Macca]

agreed ryan, but saying that it may acctully utilise the full throw of the throttle body.

would be interesting to see if it does.

[filofaith]

someone hook up there blitz throttle controller and scangauge please so we can find out :D

[Spaceboy]

yeah i am very interested in finding out more about this! :)

[Turbo_Tim]

I think i would be more interested to find out if the throttle is full open at this supposed 8x%. At 0rpm (i.e. car on, not running) does the throttle move and does it show a throttle %.

[Frogman]

I'll check right now

[Frogman]

http://i202.photobucket.com/albums/aa102/thefrogman/th_MOV00751.jpg (http://s202.photobucket.com/albums/aa102/thefrogman/?action=view&current=MOV00751.flv)


3.53% when at 0 rpm... and a full throttle(supposedly) its 81.57%

at idle is 2.xx%

sorry about quality but who really cares, you get the idea :D

[Turbo_Tim]

So with the car not running but on and full throttle its 81.57%? I guess this means you could then physically look at the throttle body under the same conditions and determine if it is full open. If its not thats interesting but if it is i guess that just means its just something in the way the scan guage or ecu works.

[Julz]

sounds like the best way is to pull off the intake pipe and have a look at the throttlebody when you have full throttle.

Can potentially try it with the engine off and the pedal to the floor although dont know if the fly-by-wire works when the engine is off

[Macca]

well frogman IS NOT using a scan gauge, where as everyone else is, which is interesting.

The only downside is getting to the TB would be a pain in the ass!

[Frogman]

I don't see there being that much of a difference whether it's a scangauge or not... It's still processing the same info.

I just wanna know what others are getting and if it changes when a throttle controller is put on

[Corosith]

If only they had the scangauge on the right setting!

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[why_bother]

i had a search and couldn't find anything on throttle position... or actual throttle postion...

i have noticed that with the ipod program Rev i only get 81% throttle position now matter what gear or speed when i floor it. Could it be that its caused by the differing voltage? could it be that its because of the stock setup? has anyone else noticed it? and has anyone with a throttle controller got any scan tool to find out their throttle position?

another stupid question: could it be that with a throttle control i could 100% throttle position?

cheers :D

a long long time ago in a galax......

a while back (before i had the workshop manual) i measured the throttle position voltages & recorded them in a table to see what the deal was (the idea was to substitute a voltage into the system in stead of using the throttle pedal.. ie: cheap home made version of cruise control)

scangauge says 8x% TPS is max, this new thing says 8x% is max which could only mean a couple of things. the information is common between the two different manufacturers of this gauges so it makes me believe that the information is reliable and it is running 8x% when you floor it.

so do you try to substitute in a higher voltage to 'test' if the system will exceed the stock value & monitor it with these aftermarket goodies (risk damaging stuff) dunno, haven't read the workshop manual on it for a long time.

you could pretty well try whatever you want, but the fact of the matter is that the ECU will still govern what goes on at high RPM. timing goes backwards, boost goes down, power drops off and afr's go stupid

get an aftermarket ecu, it will have to give a huge gain

[filofaith]

GM Grey just got a blitz throttle controller i wonder if he can test it with a scangauge??

[GM Grey]

Unfortunately i don't have a scangauge :P

Would luv to know though.