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Cressida nut
91 Pickup (Hilux)2wd
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4,586 Posts
the ones under $50 are a resister on the IAT circuit to run a little richer. the ones more than that are a resister with fancy packaging


BTW I'm totally stealing that pic
 

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Soylent Green sales
rock crawler
Joined
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12,801 Posts
The 22RE's ECM is too crude to do anything with.
As for fooling the IAT or any other sensor, a 25 cent resistor from Radio Shack would work.
 

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YOTA Master
'93 2wd P/U
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2,434 Posts
A performance chip descibes to me a PROM chip that is used in automotive ECMs to store the basic program that runs the engine. these "chips" can be reprogrammed to change the operating parameters and in some instances this can enhance performance. Usually these instances are if there have been significant mechanical modifications to allow more air to be pumped by the engine (higher volumetric efficiency)

The ECM in our trucks does not have a removable "chip" (unless you are good a desoldering solid state components). However they can be reprogramed. But if you have not done anything else to your engine (ie, porting, bigger cam, higher compression ratio) don't expect any real gains.

Before you embark on any performance gain venture. Do some homework.

Figure out what you want to accomplish and then plot a course of how to get there.
 
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