Thread: Request for a 2 stage nitrous update for nemu

I was wondering if you are able to release a 2 stage nitrous update for nemu.Reason being that with the setup I was working with were making 320 + and we were having traction issues in first and second gear.We have a new setup now that were aiming for 475+.And I know we are going to have traction issues spraying all the nitrous at once.Another feature that I would also like to have is for the nitrous to shutoff on the 2 step.

I would just use a generic output to trigger the second shot. You can tune the fuel and ign maps for nitrous just like you would for a single shot.

For the two step issue, I would simply only have the nitrous engage when the vss reading is greater then 10mph or so.

The thing is if I activate the second shot with a generic output.I will not be able to pull back timing and add fuel when it activates.

AS for the 2 step.I would like the nitrous to disactivate on step for the reason being that speed sensor is causing the nitrous to activate and disactive in first gear and some of second.When I look at the logs it shows the engine reving to 9400 rpm in first gear then it revs to about to 7000 in second gear wich is about 57 mph and that's when it activates the nitrous.When its suppost to activate the nitrous after 10 mph.When I look at the logs its shows that the speed sensor does not read until 57 mph causing the nitrous not to activate until it reads.And I would like the car to launch with alittle nitrous.And the only way Im going to be able to do that if it disactivates on 2 step and activates by rpm.Thats for the first stage.For the second stage since the speed sensor reads after 57 mph I"ll activate the second stage at 57 mph or at a higher mph when the car dosnt spin.I've tried new speed sensor cable,different cluster and ecu.And Im still having the same issue.The weird thing that when normal driving the it reads just fine.It only does it when launching.

You can utilize the map switching feature when using the generic output to trim your fuel and ignition.

Im not sure what to tell you about the vss issues. For a bandiaid you can set up your spray to engage at wot with a delay. You would just have to be precise with how long you start your 2 step before launching. I would make it as short as possible so you dont have much lag when entering 2nd gear. You can use the reset timer to counter this lag but you would need a pair of balls the size of a elephant to spray between shifts.

I like where this is going!

Like @D-Unit121 has mentioned you can use a generic output to switch to a alternate or secondary map to pull the additional timing and/or fuel corrections that are needed for the second stage.

I will see what we can do about the disable on launch control feature.

The "DISABLE ON LIMITER" check box applies to ALL rev limiters, including launch.

On one of the runs that I did.The logs shows that it was spraying nitrous while on the 2 step.But it does not show its spraying while it hits the rev limiter.If you pm me an email I can send you the logs and tune so you can check it out.