Change my timing through iat plug?

cobrarwanab

New Member

Apr 30, 2007

7

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1

Dearborn Heights, MI

Jul 22, 2007

#1

• Jul 22, 2007

• #1

I run a zex wet nitrous kit and currently spray a 75 shot. I want to go to a 100-125 shot but have no way to retard my timing! 2 degrees retard for 100 shot and 4 degrees retard for 125 shot. Someone told me i can retard my timing by using a resister in my iat sensor plug? Does anyone know about this? If so what ohm resister do i use?
Thanks
Dave

 

the98stang

Active Member

Aug 12, 2005

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Clovis, CA

Jul 23, 2007

#2

• Jul 23, 2007

• #2

cobrarwanab said:

I run a zex wet nitrous kit and currently spray a 75 shot. I want to go to a 100-125 shot but have no way to retard my timing! 2 degrees retard for 100 shot and 4 degrees retard for 125 shot. Someone told me i can retard my timing by using a resister in my iat sensor plug? Does anyone know about this? If so what ohm resister do i use?
Thanks
Dave

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I'm pretty sure that won't work, as the IAT just sends intake temperature readings to the ECU, nothing more. Changing the ohm resistance should not change the timing. You need a programmer to do the job.

 

white99gt

Founding Member

Aug 8, 2000

4,649

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stockbridge,Ga(near atlanta)

Jul 23, 2007

#3

• Jul 23, 2007

• #3

depending on the resistor it can change timing.But thats a HACK way of doing it.Also based on other inputs it could effect other things.

Best way is to get s tune setup for your setup.Or u will be at risk of damaging your engine.

 

Skud

Member

Sep 10, 2003

493

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Saskatchewan

Jul 23, 2007

#4

• Jul 23, 2007

• #4

Putting a resistor on the IAT line would make the IAT think the incoming air is hotter than it really is. This would make the ECU pull timing. The amount of timing pulled would depend on the values the tuner programmed in..

I guess it would work, but you would have to know the amount of timing you tuner specified for hotter air to be able to know what value of resistor to put in.

IMO, it would be a very big hack and probably dangerous..

Riley

 

the98stang

Active Member

Aug 12, 2005

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Clovis, CA

Jul 23, 2007

#5

• Jul 23, 2007

• #5

That's a huge risk. You won't know how much timing the computer is pulling either.