I'm putting N2O on my car in the near future.....I'm prolly gonna run a plate system and before that I wanted to know how far can I run a stock throttle body before I should upgrade it.....Im asking this since you can either buy a 52mm or 58mm nitrous plate....Its the car in my sig, the most im going to do it put headers on it and a mild cam. I want to run a 150 shot on it, will a stock throttle body do all this or should I upgrade now? Thanks

 

Nitrous makes its own oxygen so you don't need more volume. Your 48 mm will be fine.

 

Long time ago previous posts some folks ran in the 12's with the stock tb with mild add on's.Fewer problems also from what I read.I dunno.My02.

 

There is really not much reason to go over 52mm. When we were testing my 381 on the engine dyno, with a 58mm TB, the air flow max'd out with the blades only 77% open. The engine would have made the same 500HP with only a 52mm TB. Unless you are eventually planning more than 500HP, stick with the 52mm.

Appears you have already decided on a "plate". Might want to keep an eye on all 8 plugs when you do that, since the plate can lead to maldistribution of the various components (air, N2O, fuel) in the LT1 intake manifold.

 

I have not fully decided on the plate, what would you suggest? It'll never see over a 150 shot