C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Anyone? THROTTLE PERFORMANCE SWITCH?

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Old Oct 12, 2008 | 06:02 PM
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Default Anyone? THROTTLE PERFORMANCE SWITCH?

seen this on the bay... anyone have anything to say about it, good or bad?

Discription says ...Throttle Performance Switch will provide an immediate improvement in throttle response and the maximum amount of fuel and timing advance. Best of all, installation is a direct plug-in to the throttle position sensor and requires no tools! Great for any stock or modified engine.


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Old Oct 12, 2008 | 06:06 PM
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Complete waste of money. Just put your foot down further.

If you want an improvement, bump your stock TPS to about .63 volts. That's where I run mine at, and I get a noticeably bettery throttle response without throwing a code.

The factory setting is .54 volts.
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Old Oct 12, 2008 | 06:08 PM
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Garbage. Will provide minimal improvement, if any.

Save your money.
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Old Oct 12, 2008 | 06:18 PM
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Cool, thank you gentleman
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Old Oct 12, 2008 | 06:21 PM
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Originally Posted by 86PACER
Complete waste of money. Just put your foot down further.

If you want an improvement, bump your stock TPS to about .63 volts. That's where I run mine at, and I get a noticeably bettery throttle response without throwing a code.

The factory setting is .54 volts.


Switch is hype! I run my TPS @ .62 the difference is noticable.
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Old Oct 12, 2008 | 09:08 PM
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how do i run my switch higher? wont it run rich?
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Old Oct 12, 2008 | 09:16 PM
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A waste of money. Sure it will work for a while, but at soon as the PCM/ECM senses the fuel/air and spark advance, it will cut back on the fuel/air ratio and retard the spark back to the factory ECM settings. Then you just wasted your time with a jumper wire effect on your engine wiring harness! Just get a heavier foot!!
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Old Oct 12, 2008 | 10:19 PM
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Originally Posted by 396chevy
how do i run my switch higher? wont it run rich?
Upper two wires on TPS sensor. Backprobe with a mutl meter and turn key "On". Engine does not have to be on. Loosen both torx screws and adjust by hand till you get the right voltage reading. Retighten torx screws and recheck setting.

As you open the throttle by hand, you should see a steady increase in voltage, with no breaks. At wide open throttle, reading should be close to 4.0 volts.

If you raise it too high, the idle will raise. My car likes .63 volts. I get bettery throttle response with this setting than with the factory .54 volts. I drove around and blipped the throttle back to back. .63 feels more responsive.

Richer? I don't know. I get high 20's MPG sometimes 30.


Last edited by 86PACER; Oct 12, 2008 at 10:24 PM.
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Old Oct 12, 2008 | 10:25 PM
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Originally Posted by 86PACER
Upper two wires on TPS sensor. Backprobe with a mutl meter and turn key "On". Engine does not have to be on. Loosen both torx screws and adjust by hand till you get the right voltage reading. Retighten torx screws and recheck setting.

As you open the throttle by hand, you should see a steady increase in voltage, with no breaks. At wide open throttle, reading should be close to 4.0 volts.

If you raise it too high, the idle will raise. My car likes .63 volts. I get bettery throttle response with this setting than with the factory .54 volts. I drove around and blipped the throttle back to back. .63 felt better.

Richer? I don't know. I get high 20's MPG sometimes 30.

great post man thanks!
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Old Oct 13, 2008 | 11:34 AM
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You have a '92 according to your profile, your TPS is non-adjustable.
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Old Oct 13, 2008 | 11:37 AM
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Originally Posted by ultraviolet70
You have a '92 according to your profile, your TPS is non-adjustable.
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Old Oct 13, 2008 | 04:02 PM
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Old Oct 13, 2008 | 04:40 PM
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Originally Posted by 96_vette
Well I hope not, I was looking to discuss the advantages of the Airfoil and a 160 thermostat.
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Old Oct 13, 2008 | 06:39 PM
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Originally Posted by ultraviolet70
Well I hope not, I was looking to discuss the advantages of the Airfoil and a 160 thermostat.


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