Scion_shift

hmmmm i hooked up my auto X-ray today during lunch, and while i was driving i would punch it. i had it set to where it shows throttle position and it only went up to 80% every time. this isnt a cheap diagnostic tool. it reads your loead, your timing advance and retard, air intake temp. etc. so i know its correct. but why only 80%? when i hooke dit up to my integra when i had it, it read 100% same with my VAFC. sorry for the rant and rave. anyone with a SAFC, can you put it on the throttle position setting and verify this for me? thanks

Tomas

Should be no big deal - some systems indicate differently than others - from the manual for my OBDII:

jj010

That info is completely bogus! In most cases your device was correct alot of cars don't open the throttle plate fully and usually e-manage, s-afc, or camcon will help it to open fully, which in return produces extra hp.

THansenite

Interesting jj. Can anyone verify if the tC's throttle plate is opening fully or if there is power being kept from us?

io333

wouldn't surprise me at all

06SuperWhite_SoCal_tC

Keeping tabs on this one... Someone please do find this out.

WeDriveScions

Goes to 100% on my SAFCII....

soros151

following

WeDriveScions

I'm going to plug into my OBD-II and check to make sure that goes to 100% too.... I'm pretty sure it does....

kungpaosamuraiii

I'm pretty sure it doesn't.

On most if not all cable throttle driven Toyotas of the past, the pedal was set so that it doesn't allow the driver 100% throttle opening. Toyota always bets safe.

OuterHeaven

We are drive by wire so it doesnt matter if it is not open all the way because we can not change it. Now if it can be changed that would be nice

THansenite

Drive by wire rules!

jj010

That's because you have the piggy back system capable of doing that once its tuned properly, therefore producing more hp.

ERIC-TC

I've got AutoTAP diagnostic scanner w/ data logging capabilities and my throttle tops out at 80.1 % as well. I floor it and it always goes to 80.1% like clock work.

Keep in mind that this is just the feed-back from the TPS which is 0-5V. You do not need to be at 5V to be at WOT. I also the minimum throttle position is like 20% -So it might be the way the scanner is interpreting the data from the TPS.

5V does not mean 100% open throttle...

kytc

Checking this one out

HP_Pirate

Thats the beauty of fly by wire. it can be changed with the right system.

Sounds normal to me. different systems mean different readings.

Eric you sound like a tech. I know on hondas (I'm a honda tech who is crazy about toyota) that all will read from 0-100. we had a corolla used car and we ran a diag. noticed that it normally read from 20-85.