When I used the Nos brand Cheater set-up.
It says the the engine needs to be 350 cubic inches minimum. This was installed on my 250, I used the smallest jets 150-175 HP. This was so powerful that it just detonated the whole time.
It was unreal how fast my Camaro went even with the detonation. I remeber running it 2nd through third gear auto, & on the shift from 2nd to 3rd @ about 80 mph it broke the tires loose & the car chainged lanes on me awesome!!! :-) It was really just to much to be safe. I ordered 75 HP jets from NOS & that worked out pretty good. I was new to nitrous @ that time so I did not have a nitrous cam, I retarded the timing but that was not enough to supress the detonation. I never blow up the engine, I had forged pistons & had 9-1 comp. Dollar for dollar you cant beat the HP gains w/Nos. Give it a try, if you do not like the NOS you can easily sell it to someone else.