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Why not keep it simple and just use a wet shot? Easier to tune, alot safer, and less headache!
This exactly. You only have to manipulate timing, not both. You can even use the additive fuel of your choice, whether that be tank gas or something exotic. Simpler only gets you a short distance. Doing it right can get you all the way without BOOM.
You might have figured this out already but wanted to point out 2 things.
1. EFI live has cos5 that will do just what you are looking for adding fuel and timing with out tricking iat or another sensor. I don’t like it on the speed density cars so much because iat is used in air mass calculation so you won’t have any acoustic ting for changes in air mass when the temperatures change.
2. a good way to get an idea how much fuel you need is to go to nitrous outlet or nx or whoever’s kit you have and look if the have a pound per hour (pph) flow for the fuel side or for nitrous side with a fuel to nitrous ratio. Should have this info for some wet kit that’s close to what you have. Then you know how much fuel to add and you can calculate how much pulse width you need to add and how much eqr or whatever your using needs to be added based on your injector size and pulse width you need.
always be conservative starting out but this can definitely get you close enough to take a shot.
Because being able to adjust fueling with the laptop and never having to pop the hood has some allure to me. As long as it can be done reliably.
could run a stand-alone and just adjust the fuel pressure on the fuel solenoid.
I mean I run a wet kit on my 07 Silverado. With a EFI Live OS I put 12v to a pin on the ecu and it references a e85 timing modifier table. I can use it to modify fueling as well. Get the wet jetting close and fine tune using the laptop or fuel pressure on your standalone if you have one
You would set a toggle switch or relay trigger off of your arming switch for the nitrous to ground pin 53 on the red pcm connector. Once it grounds that circuit out, then it will rely on this table shown below to retard timing.
Now, there is a timer for this system which is below on the main page below. The max timer setting is 5s stock, you would need to set that to 410s which is max for the system, assuming you wouldn't need the nitrous to be on for almost 7 minutes.
Is this still an option for retarding timing on my '99 A4 that was NOT originally equipped with traction control?
ie; is it still a function in the ECU anyway?
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