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http://www.performancechipsdirect.com/


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http://www.performancechipsdirect.com/

claims to have a performance chip for our renix era trucks.

 

 

anyone running it or heard of such a thing? How/ Where does it connect etc. ..

 

 

 

After 4 attempts I got through to their online chat:

 

You Say: I was wondering if you knew how your product connects to my vehicle

You Say: it is an 89 jeep comanche with a 4.0

You Say: it has an ecu that has no memory retention. it is designed to output fuel mapping only by sensors

You Say: so does your product replace the ecu?

You Say: as there is not an eprom that is removable in side the ecu

Cale Says: no this is not an ECU

Cale Says: and doesnt go into you ECU

Cale Says: its spliced into your AIT sensor

You Say: my air temp sensor?

You Say: what does the acronym AIT stand for?

Cale Says: air intake temp sensor

You Say: so the chip is spliced into that sensor and sends the computer voltages lower that actual to make it think it's getting colder air.

Cale Says: resistance readings

Cale Says: yes

You Say: i don't see how that would produce 60 hp

You Say: or improve gas mileage

You Say: because colder air = more horsepower but also more fuel

Cale Says: its "UP TO 60hp gain"

You Say: and if the air temp was not actually colder it would cause it to run rich

Cale Says: you will see a 15% gain of whatever the car has now

You Say: is this a guarantied number?

You Say: money back etc?

Cale Says: you have 14 days to try it and return if you don't like the gains

Cale Says: but you are responsible for return shipping and a restock fee

Cale Says: if the chip doesnt work we would warranty it for a new one

You Say: well thank you for your time.

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Snake oil.

 

The oxygen sensor is calibrated to tell the ECU what the air-fuel mix is. The ECU then regulates the injection pulse to maintain the air-fuel mix in the optimum range. I am not sure, but I think if you try to trick the ECU by manipulating the air temp reading, the resulting richer mix will show up at the oxygen sensor and the ECU will cut back the injection pulse anyway.

 

I think.

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Snake oil.

 

The oxygen sensor is calibrated to tell the ECU what the air-fuel mix is. The ECU then regulates the injection pulse to maintain the air-fuel mix in the optimum range. I am not sure, but I think if you try to trick the ECU by manipulating the air temp reading, the resulting richer mix will show up at the oxygen sensor and the ECU will cut back the injection pulse anyway.

 

I think.

 

Makes sense... Isn't that the entire point of having the O2 sensor?

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When a vehicle leaves the factory it's one big compromise. Mileage, power, economy, comfort, cost etc., etc.They are selling to the general public. Not a small group. What these chips do, when you get one that works, is take from one application, economy, to improve another, power. Sometimes it will also be necesary to swap a sensor for a better signal to the chip.

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Anybody check out his site? Click on "Add to cart" and for a Comanche you get to pick a year and an engine type. The years run from 2014 to 1950. Ignoring the fact that the 2014 models aren't here yet ... I want to know how many 1950 cars used computers and chips. I know the 1950 Hudson that was my first car didn't. Points and condenser, baby.

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