Is it true for nitrous spray that I shouldn t go above 50% of my car engine power

 

It's an old rule of thumb to go by. It seems quite a few have gone past that tho.

 

it depends on how well built your engine is

 

I would say only on a stock motor

 

What engine do you have? Also is it modded or not? Then you can also figure out what your engine can take.

 

my car is G8 GT it has ls2 block+ls3heads/intake manifold but we have a small cam due to DOD(AFM)
My car is 100% stock

 

Well it will take a 150 like a champ.. if you need anymore than you could just do a cam bolt ons and be close to 500whp and than hit it with a 100-150.

 

Hit it with a 150 with all supporting mods. Then go from there.

 

I think you'll be more than pleasantly surprised with a 75-100 shot being that you've never sprayed nitrous before. Definitely start small and work your way up. Jumping into something with a huge shot without any experience with it is asking for trouble. Just my two cents worth of advice.

Nick

 

Not if the system is thrown together the correct way IMO. If he just put a nozzle kit on the car activated by a button with no safety than it will probably end in disaster but if he set everything up correctly i.e. window switch, WOT switch, FPSS or just a microedge than it should be perfectly fine.

 

Screw that FPSS. Window switch it and run a WOT switch, and set the window switch so it turns on no lower then 3000 rpm and about 100 to 200 rpm before the limiter, and you will be fine.

 

Nick is not saying a 150 shot won't work! He is simply stating to start small and get use to the spray before uping to that size shot. Wich is very good advice Imo...

 

Bingo. I was pm'ing back and forth with the original poster and I guess there was some back story missing from my post.

Nick

 

so the g8 gt came with an ls2 block and ls3 heads and intake manifold? im totally confused

 

Like stated above start off on a smaller shot and work your way up so that way you how the car is going to react to the nitrous. I would also at least put it on a dyno so you can check the AFR of the car so that away you know your not running lean or anything.

NOt only with the system you might want to think about pairing a Window Switch, FPSS ( Even though most dont like it...i'd rather put a $50 part on to potentially save a motor ), and bottle heater. Those items will net you a basic system.

 

the 08 gt has the L76(360hp), wich is basically a detuned ls2 motor. Except for the fact it utilizes l92 heads. the factory 87 octane tune and dod cam kills some power. The 09 gxp utilizes the ls3, wich has the same l92 heads as the l76, but 12 more ci and better cam! The factory tune is alot better on the gxp ls3 car as well!

 

My car made 435rwhp on motor and I've hit it with 350+ worth of nitrous so no, it is not true.

 

i gotcha, just a little sarcasm, never heard what the OP was saying before, ls3heads on a ls2 block.

 

I meant ls2 block with l92heads/intake manifold that are also used in the ls3 engine