Is this B.S. or what?
#2
Originally Posted by Boriqua_02~EdGe~
#5
#8
Originally Posted by Ranger1
yeah I was going to say for $2 you could get a big pack of them.
And hook em all up in sequence? Instead of gettin a low degree on your computer, you could get like ohh...-459 degrees below 0. That's what my truck runs at. Only problem though, since molecules stopped moving my truck doesn't actually move anymore...it's all good, the A/C its great!
Aaron
#11
I don't see how this would work anyway on any year truck. Your truck can only get in and out so much air. Sure you can lean out or make more rich the fuel and play with the timing and stuff but only so much and I would relay on a chip to do that over some make shift thing like this.
You only get what you pay for !
You only get what you pay for !
#12
Originally Posted by Ranger1
I don't see how this would work anyway on any year truck.
In earlier fuel injected Rangers, and in many FI vehicles in general, the Air Charge Temperature is used as an input to the spark calculation. So, if you tamper with the Intake Air Temp sensor's voltage input to the PCM, it is possible to fool it into thinking that the intake air charge is cooler, causing it to advance the timing. Advanced timing produces more power IF the fuel can support it without excessive detonation. In calibration strategies that use the ACT in the spark calculation, the combination of a correctly altered ACT input and high octane fuel can make a small but often noticeable power increase.
Now, back to reality. A 2002 Ranger does not use the ACT in the timing calculation of a warm engine. So this kind of mod is totally pointless.
#15
Originally Posted by Red_Ak_Ranger
Hey Rwenzing, how does temperature affect it then? But my truck is a 99 Ranger, and when I drive it up here, it will be -40 degrees below zero at some points.
Aaron
Aaron
#16
Originally Posted by rwenzing
Many people think that this mod has something to do with A/F mixture. Not true. Actually, the principle is that a colder intake charge can tolerate more spark advance.
In earlier fuel injected Rangers, and in many FI vehicles in general, the Air Charge Temperature is used as an input to the spark calculation. So, if you tamper with the Intake Air Temp sensor's voltage input to the PCM, it is possible to fool it into thinking that the intake air charge is cooler, causing it to advance the timing. Advanced timing produces more power IF the fuel can support it without excessive detonation. In calibration strategies that use the ACT in the spark calculation, the combination of a correctly altered ACT input and high octane fuel can make a small but often noticeable power increase.
Now, back to reality. A 2002 Ranger does not use the ACT in the timing calculation of a warm engine. So this kind of mod is totally pointless.
In earlier fuel injected Rangers, and in many FI vehicles in general, the Air Charge Temperature is used as an input to the spark calculation. So, if you tamper with the Intake Air Temp sensor's voltage input to the PCM, it is possible to fool it into thinking that the intake air charge is cooler, causing it to advance the timing. Advanced timing produces more power IF the fuel can support it without excessive detonation. In calibration strategies that use the ACT in the spark calculation, the combination of a correctly altered ACT input and high octane fuel can make a small but often noticeable power increase.
Now, back to reality. A 2002 Ranger does not use the ACT in the timing calculation of a warm engine. So this kind of mod is totally pointless.
#17
#18
Originally Posted by rwenzing
There are literally thousands of adjustable parameters in a calibration. Someone with access to the program can change the base timing or its modifiers, no problem.
#19
Originally Posted by Ranger1
Right which is why even if this did work on my truck i think i would just get the same effect with a chip.
#20
Originally Posted by rwenzing
Actually, there is the potential to gain far more from a proper recalibration than there is from something as crude as the IAT resistor mod. Of course, you would probably expect a bit more from something that costs hundreds of dollars as opposed to a few cents.
#21
#22
Originally Posted by NHBubba
Didn't John try this out.. decide it was the cat's meow.. then end up eating is words when he found evidence it did nothing for his late model truck? I'm sure there's a series of very well documented threads around here somewhere..
Be sure to read the entire thread before coming to any conclusions based on the first posts. There is an evolution to it that ultimately confirms that the mod does not work on the newer trucks.
#23
Unregistered User
Posts: n/a
This has the same properties as adding Nitrous Oxide ( Cold Compressed air ) . The denser the charge, the further the advance only in this instance, the air is NOT actually being colder at all .
20hp? I doubt it. Is it possible.. sure! watch your piston tops burn from it.
Do it wisely, Call Doug and have it done right the first time.
20hp? I doubt it. Is it possible.. sure! watch your piston tops burn from it.
Do it wisely, Call Doug and have it done right the first time.