1992-96 Adjustable Throttle Position Sensor Kit
Thread Starter
Pro
Joined: Jan 2005
Posts: 579
Likes: 0
From: Denton Texas
1992-96 Adjustable Throttle Position Sensor Kit
Does anyone have this?
Is there really an advantage?
Here is what is in the ad:
The TPS (throttle position sensor) is a variable resistor connected to the throttle shaft on the throttle body. When the accelerator pedal moves, the TPS sends a signal to the computer. The computer calculates the fuel delivery and the air being consumed based on the throttle valve angle. Our adjustable TPS lets you fine-tune your Corvette's throttle response for maximum performance by changing the voltage of the sensor. The stock TPS is preset and cannot be adjusted. Out-of-adjustment TPS's can cause erratic idle, stumbling, surging and overall poor engine performance. The TPS kit includes the sensor, replacement connector/terminals, test jumper adjustment tool and instructions
Is there really an advantage?
Here is what is in the ad:
The TPS (throttle position sensor) is a variable resistor connected to the throttle shaft on the throttle body. When the accelerator pedal moves, the TPS sends a signal to the computer. The computer calculates the fuel delivery and the air being consumed based on the throttle valve angle. Our adjustable TPS lets you fine-tune your Corvette's throttle response for maximum performance by changing the voltage of the sensor. The stock TPS is preset and cannot be adjusted. Out-of-adjustment TPS's can cause erratic idle, stumbling, surging and overall poor engine performance. The TPS kit includes the sensor, replacement connector/terminals, test jumper adjustment tool and instructions
Burning Brakes
Joined: Nov 2004
Posts: 781
Likes: 0
Do you have idle or surging issues?
Some might use it because they are not seeing 100% (99%) TPS at WOT.
I slotted the holes on my '92 because my aftermarket 58mm throttle body needed to be 'lowered' at idle.
Some tuners/experts like the TPS to read between .60 to .70 volts at idle, others like to set it down in the mid .50s, depending on the application/engine mods.
You should scan your TPS volts, throttle angle %, and RPMs to confirm if you need adjustment to the TPS position. Anything under .70 volts, at 0% angle, at your DESIRED idle, is generally considered normal.
Some might use it because they are not seeing 100% (99%) TPS at WOT.
I slotted the holes on my '92 because my aftermarket 58mm throttle body needed to be 'lowered' at idle.
Some tuners/experts like the TPS to read between .60 to .70 volts at idle, others like to set it down in the mid .50s, depending on the application/engine mods.
You should scan your TPS volts, throttle angle %, and RPMs to confirm if you need adjustment to the TPS position. Anything under .70 volts, at 0% angle, at your DESIRED idle, is generally considered normal.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
I doubt it will do anything.On cars with self calibrating TPS like mine there is no adjustments like the earlier cars.I think the ECM uses the voltage it sees as a basline.
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
The LT1's don't benifit from a higher idle VDC the same as the older TPI systems. If you are not throwing a code and your ECM is seeing 0 TPS and 100% TPS then it will do nothing. When I installed my 58mm I had to make mine adjustable to get my idle VDC up from .3 so I modified my stock unit. You can oblong the holes on te stock unit with a dremil in about 2 min.
