performance resistor
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Senior User
Joined: May 2006
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From: Katy, TX
performance resistor
Any body tried these resistor chips that are supposed to add 20+ HP. My buddy said he has one and can feel the difference. just wondering how many have tried it. http://cgi.ebay.com/ebaymotors/20HP-...spagenameZWDVW
Post Fiend
Joined: Jul 2005
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From: Durant, OK (SOSU)
They're similar to cat-back exhausts. They provide little to no gain, but you think there is more power there.
They're very specific. At certain outside conditions, they basically fool the ECM into always thinking it's perfect conditions outside, thus adding the "optimum" amount of fuel and air to produce a certain amount of power.
While this is all well and good under most conditions, they provide basically no true gains 99% of the time, and when they do provide gains, they can hurt the engine by the engine believing it's a different temperature outside.
They're very specific. At certain outside conditions, they basically fool the ECM into always thinking it's perfect conditions outside, thus adding the "optimum" amount of fuel and air to produce a certain amount of power.
While this is all well and good under most conditions, they provide basically no true gains 99% of the time, and when they do provide gains, they can hurt the engine by the engine believing it's a different temperature outside.
Post Fiend
Joined: Jan 2005
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THere's only one way to get power from a tune on a ranger and thats with bama programer. You can get 10 extra hp and 10 pound of torque on the average with bama. There is no short cuts, you have to pay to play. I believe those resisters keep the engine in open loop like when it's cold and supplies more fuel, or is it closed loop when it's cold, whichever. Anyway, the air, fuel ratio and timming should be adjusted together like with a programer for proper long term results. It's a gimmic deal like the tornado except you can feel a slight difference with more fuel, just like your truck is peppier when it's first started or cold, once the engine reaches operating temp, the computer cuts the fuel back a touch.
Posting Guru
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The resistor goes into the intake air temperature sensor. The theory is that it will make the computer think the incoming air is colder than it really is and add more fuel thus more power. Same thing can be achieved using a different value resistor in the engine coolant temp sensor.
The problem is, if the resistor is of such a value as to make the sensor go outside the range the computer can handle, the engine will not go into "closed loop" mode, and the engine will become very inefficient.
If the resistor is of a value as to make a small change in the circuitry, the computer will notice the change, compare it to other sensor inputs, see it as a aging sensor and adjust accordingly nullifying any benefits that may be gained. You can get the same resistor at Radio Shack for about 69 cents.
The computer already does what the resistor is supposed to do. If the engine requires more power, the computer adjusts accordingly, and at full throttle the computer goes to pre-set parameters anyway. Not a worthwhile modification. jd
The problem is, if the resistor is of such a value as to make the sensor go outside the range the computer can handle, the engine will not go into "closed loop" mode, and the engine will become very inefficient.
If the resistor is of a value as to make a small change in the circuitry, the computer will notice the change, compare it to other sensor inputs, see it as a aging sensor and adjust accordingly nullifying any benefits that may be gained. You can get the same resistor at Radio Shack for about 69 cents.
The computer already does what the resistor is supposed to do. If the engine requires more power, the computer adjusts accordingly, and at full throttle the computer goes to pre-set parameters anyway. Not a worthwhile modification. jd
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