Throttle responce

zuni · 06-28-2007, 09:40 PM

i cant spell so sorry in advance. How can i get a better throttle responce out of my 89 7mgte turbo supra. any ideas or tricks to try?

cre · 06-29-2007, 07:46 AM

Tighten down the throttle cable. There is supposed to be a little slack, but not 1". Mine has about 1/8" of play. Then recalibrate your TPS. You can try experimenting with timing advances. Make sure your cat is partially clogged with debris as well and check your plugs and wires.

f00g00 · 06-29-2007, 03:39 PM

Lightweight flywheel if you have a manual, not sure if there is a lightweight flexplate for the auto trannies.

zuni · 06-29-2007, 08:22 PM

Quote:

Originally Posted by cre

Tighten down the throttle cable. There is supposed to be a little slace, but not 1". Mine has about 1/8" of play. Then recalibrate your TPS. You can try experimenting with timing advances. Make sure your cat is partially clogged with debris as well and check your plugs and wires.

How do you recalibrate your tps? and what is a tps? and whats timing advances.

cre · 06-30-2007, 05:00 AM

TPS = Throttle Position Sensor. The TPS is a sensor that's used to give the ECU an idea of how far the throttle is open (the air flow meter is what the ECU actualy uses to determine how much fuel to provide, but the TPS gives it info for minor tweaks) and it tells the ECU how quickly the throttle is being open. Testing and calibration info can be found here: http://www.cygnusx1.net/Supra/Librar...spx?S=FI&P=101

Timing advance is when the spark plugs fire in relation to the position of the piston. Stock our spark plugs fire about when the crank has to move only 10? more to put the piston at the top. Firing the piston sooner can yield you a bit more power, but go too far and you'll be pushing the pistons directly down into the crankshaft and run the risk of killing your engine. If you have no experience with this I HIGHLY recommend you try to find someone in your area who can help you tweak it and who knows the limitations of the 7M.

06-28-2007, 09:40 PM	#1
zuni 3" Exhaust Join Date: Jun 2007 Location: Rockford, illinois Posts: 55	Throttle responce i cant spell so sorry in advance. How can i get a better throttle responce out of my 89 7mgte turbo supra. any ideas or tricks to try? __________________ Zuni www.myspace.com/toxicskin www.originalskintattoo.com

06-29-2007, 07:46 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Tighten down the throttle cable. There is supposed to be a little slack, but not 1". Mine has about 1/8" of play. Then recalibrate your TPS. You can try experimenting with timing advances. Make sure your cat is partially clogged with debris as well and check your plugs and wires. Last edited by cre; 06-30-2007 at 04:53 AM.

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06-29-2007, 03:39 PM	#3
f00g00 12psi boost Join Date: Aug 2005 Location: Kuwait Posts: 292	Lightweight flywheel if you have a manual, not sure if there is a lightweight flexplate for the auto trannies.

06-30-2007, 05:00 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	TPS = Throttle Position Sensor. The TPS is a sensor that's used to give the ECU an idea of how far the throttle is open (the air flow meter is what the ECU actualy uses to determine how much fuel to provide, but the TPS gives it info for minor tweaks) and it tells the ECU how quickly the throttle is being open. Testing and calibration info can be found here: http://www.cygnusx1.net/Supra/Librar...spx?S=FI&P=101 Timing advance is when the spark plugs fire in relation to the position of the piston. Stock our spark plugs fire about when the crank has to move only 10? more to put the piston at the top. Firing the piston sooner can yield you a bit more power, but go too far and you'll be pushing the pistons directly down into the crankshaft and run the risk of killing your engine. If you have no experience with this I HIGHLY recommend you try to find someone in your area who can help you tweak it and who knows the limitations of the 7M.