turbotuner20v

I'm trying to figure out if this is feasible and if anyone has done it and can help with a wiring diagram.

I would like to add a resistor to my IAT wires that, at the push of a momentary button, would send a signal to the ECU that the IAT temp is something at the far cold end of the spectrum, like 20*F. Then in the tune, that 20*F value will have X* of timing pulled out, and add the fuel needed for the dry shot (I assume this fuel part is possible? I know you can do timing). I would also want the dry nitrous shot to spray off the same momentary button.

Ideal scenario is that the car runs exactly the same whether the nitrous is armed or not. The only change occurs when the button is pressed and the IAT reading flips to the other part of the tune and the nitrous sprays while the tune is in the '20*F' range.

The biggest questions I have are: 1 - will the tune change fast enough to work like this? 2 - can you control fuel based on IAT readings? 3 - is there any issuse controlling both the IAT resistor and the nitrous selenoid off the same button?

I don't plan on spraying that much, and if I do, probably only in 1 gear, so having it on the button seems like the easiest option.

JoeyGC5

iTrader: (24)

Jeff, your tuner should be able to do the "resister" trick and use tables B1213 and B5107 to achieve fueling and spark retard for a small dry shot. Sorry for the rough sketch, but you can get the idea.

backchannel

Aren't pins 87 and 87a mislabeled?

JoeyGC5

iTrader: (24)

Whoops, I think so, thats why I said a "rough sketch"