ok, just an idea but what if you relayed the no2 arming switch to the iat sensor with some sort of inline resistor to send the voltage to make the car read like -40 deg and then go to the spark advance tables with hp tuners or ls1 edit and set the values to reflect those needed for spraying (just at the -40 temp).. wouldent you elminate the need for a timing tricker or permenant reduced timeing tuneing ....what you all think???

 

Been done already. Do a search and you should be able to find info.

 

yep.....u r on the right track........been doing that for 2 seasons now, it works great

 

normally you adjust for a super hot temp, to pull timing

 

Go here. This will pull about 3 - 4 deg out when the N2O is armed.

https://ls1tech.com/forums/showthrea...&highlight=BMN

 

Good info and link. I have an addition. You can also use a pointotmeter in place of resistor, for variable resistance to pull what you want. You can also put in a smaller resistor for less timing pull. Photo 37 or 38 in my web has an alternative wiring diagram and some info on pot.

Edit: Photos of wiring have been moved to my storage, so they are now in the links section of my web.