I've got an M6 and I'm finally getting my wet kit together and I was wondering what rpm I should cut off the nitrous. I have a small cam and headers with the rev limiter set at 6600. I set my shiftlight to come on at 6300 and I shift as soon as I see it in first but delay it a little as the shifts go up.

I was thinking about 6200 just to make sure it's off by the time I shift. Does that sound okay or should I go with 6300?

I also think I'm going to set it to come on at 5200 so it won't hurt my first gear traction and won't be spraying as soon as I go into gear (trying to go easy on the drivetrain).

What do you guys think?

 

I'd cut it off at 6200 like you said. As far as spraying at 5200, that's kind of late. I'd at least kick it down to 4000ish. Fix your tractions problems so you can take full advantage.

 

It's not so much traction as it is wear on the drivetrain. I don't want to tear up my rear or tranny by going into gear with the power of the bottle.

I thought about getting a time delay switch so I could spray at an earlier rpm and not have it on as soon as I'm in gear.

 

Connect a microswitch to the shifter so first gear doesn't arm the system, but once out of first it's ready to go.

 

BMN controller with first gear lock out is what im planning on running.

 

 

Number 1: If you are setting your rev limiter at 6600, why shift at 6300 - shift at 6400-6500.

Number 2: What ever you decide on your shift point, set your window switch at 100 rpms below it.

Get the supension and tires to shoot your shot out of the hole or you'll never see the full potential of the run.

David

 

First gear is not my main concern. I am worried about spraying as soon as I get into each gear and it putting too much strain on the drivetrain.



1- The light comes on at 6300 but by the time I shift, I'm between 6400-6500. I had it set higher and hit the limiter a few times. Like I said, as the gears go up, I hesitate to shift more after seeing the light.

2- I am on stock tranny and rear (I do have a HD Eaton posi) and want to take every step possible to make it home from the track without the help from a flatbed.

Thanks for the advice guys. I think I might look into a time delay switch.

 

breaking stuff is part of racing

If it was my car I would put on some et streets and activate it to come on at 3 grand