Does anyone know how much % the ECU backs off the throttle when shifting gears?

My NOS controller has the ability to be programmed to shut off at any TPS signal I set, so I obviously want to take advantage of this function and have it turn off the NOS while shifting.

So, does anyone know how much it backs off during shifting?

I will likely set up a meter to test it for myself when my car is back on the road, but I was curious if anyone knows this and could give me a little head start.

 

This is tricky stuff with NOS. Anyone with a WDS/IDS (am puzzled why you don't have that yet) can see the values and I think this is something you need to findout yourself, as its not a fixed value.

The TCM will know how much torque the engine is generating based on airflow/rpm, based on that again it will send the % torque reduction to the ECU to reduce it to a level it wants it to be, and the ECU does this by closing the butterfly accordingly.

 

My question was a general one of what general size window of ECU controlled TPS signal reduction range are we talking about.

I will get the readings myself and then see what % the ECU backs the TPS signal off when it shifts at WOT with approx 470-480 HP.

This is all the info I need. If the ECU backs off more than this when at a 625+ HP scenario, that is fine.

For my purposes, all I need to know is where to set my "deactivate" TPS signal point to safely, with a safe margin of error, turn off the NOS before gear shifts.

If the ECU backs the TPS signal off 10% to 90%, then I could safely set my "de activate NOS based on TPS setting" at 95%, so at anything less than 95% of full TPS signal, the NOS is OFF, based on the TPS signal.

I will also additionally be using the window switch parameters for on/off settings as another second level of safety to prevent NOS injection while shifting.

I am not a mechanic, have no experience with these things, but, at the moment, do not see why this will not work.

Once I think I have it figured out and I install the system, I will be testing with only the smallest +30 hp jets, so that if something is out of whack, nothing will be damaged.

After testing the system that way, only then would I start to step up the powah.