I am wondering how you guys shift your cars with nitrous on. It seems some guys will set a window switch for 6400 rpm, and shift at 6600 rpm (in other words after nitrous has shut off). Others will do the opposite. Which is the preferred method?

Also, what about powershifting? If you keep your foot to the floor, the nitrous does not shut off right?

It just seems that with the nitrous turning on and off every time you shift it offers more chance for somthing to go wrong.

 

Some people like the switch to be on the clutch pedal instead of the throttle lever. It's just a momentary pause when you push the clutch in.
Interrupting the flow of N2O at WOT is about a million times better than modulating the throttle.
I wouldn't use a throttle switch is I was given a crate of them for free.

 

I use a window switch and power shifting, shifting just above the window.

 

Just hammer threw it!!!!

 

I used a WOT switch and a window switch set 100 rpm below my rev limit. I never power shifted. its too hard on the tranny IMO and is about the only thing that breaks them.

The most mportant thing is that 1-2 shift. It comes quick on juice and you have to be mentally prepared.

 

That is what I am thinking as well. I don't really want to power shift it, seen the tranny problems that can create.

So do you keep on the juice until you let off the gas, or you keep on it until you hit the high rpm of the window switch then let off and shift?

I guess what I am getting at is it better to let off the gas, shut nitrous off, shift, and get back into it

or

set window switch for say 200 rpm below shift point and shift it as soon as the juice turns off?

 

no...just set the nitrous 100 rpm below the rev limit so you arent spraying on the limiter. Then shift where youget your best times. I just have it set so when you run you want the spray on at all times when the gas pedal is down. If your window switch is set to 6700 and your limiter is set to 6800 you should aim for a 6650 shift point or so. Shifting with alot of juice at a very accurate rpm is tough to do. So sometimes you may hit the rev limit on accident. But you dont want to...keep it under the WOT switch setting so you are always spraying when the gas pedal is down.

 

I broke 3 trannys, so good call. lol
i was 550 rwhp with turbo setup, and i broke alot of stuff.

 

LOL...powershifting definately will get you there faster. But it seems to be where everyone has problems. My thing was...ill shift as fast as I can throttle up...and if I get to where I am confidant in my clutch/shifting Ill power shift. Everytime I had a different clutch it was different. 90% of the time I couldnt powershift anyways...the hydraulics wouldnt let me...atleast not fast enough that there was a benifit from regular throttle up shifting.

On motor I could just about alwasys powershift...but when you add that TQ from the juice...things change quite a bit.

 

I have my upper ws at 6400rpm shift at 6500rpm and some call it power shifting, as i usually get a chirp from each gear and the nose does not fall a bit. Looks like an auto shifting. practice some before going to the full power shifting or you'll likely break something fast. I grew up slamming municies and t-10's as my learning boxes, read: cheaper to fix.
Robert