How do they work. I understand what they do, but how do they do it? Do you wire to your solenoids somehow and it only allows your solenoids to open a certain amount or what? Looking at this one from nitrous outlet

 

they pulse the noids really fast and build power up from a small percentage to a larger one. I assume that when it starts pulsing, the noids are opened up for really short periods of time and when it starts reaching the end they proggressively stay open longer until it is stays open.

 

yep
pulse the solenoid with power. The longer the pulse, the longer the solenoid is open.
plus you can control 0-100% over a given period of time (ramp rate).

 

i wouldnt pulse the little noids your getting

 

well i wish one of these nitrous sponsors would speak up and tell me if i could use a controller...HSW??? my kit is comin from you guys.

 

What do you want to know?

If you need a progressive? Sure, helps traction as well as engine shock....longtivitates trans as well. I would recommend a progressive for a big shot street car to aid in traction. Because at the track with some slicks people are hooking 300 of the trans brake.
If you get crappy traction now on the street with nitrous a well set up progressive will help.

I have 275/70/16 grabber uhp and on ~1sec build time I could hit a 100 at 2100 out of the hole and it would move pretty good on the street.

I raced my friends similar modded 150 shot truck and left him by at least a 1-1/2 busses to 100mph on the street due to him hitting it a 3k rpm (due to traction) in 1st gear. Any roll under 15mph was game over for him and he is a good 70rwhp more than me.


"hurting or shortening" the life of solenoids by using a progressive is overrated.

 

this is why I have always shy'd away from them...

 

well like tyler said, the solenoids i'm getting are the small ones from HSW, but no more than i use my nitrous i don't think i'd have to worry about wearing them out

 

I'd definitely upgrade your noids to NX or such. The last thing you want is a malfunctioning solenoid. That could certainly lead to engine failure.

 

FWIW I am using HSW solenoids with a progressive.


I also believe the nx or (insert big name brand) vs hsw solenoid debate is overrated...no data to prove otherwise.