I currently have a b20/vtec motor, under 70xxxkms on it. 210 compression across the boards. Mods include:

Type R cams
AEBS intake manifold
Type R throttle body
Hytec replica header with 2.5 inch full exhaust mandrel bent
I run on 94 octane.


I am going to be upgrading to 450cc injectors, 255 walbro fuel pump.

My question is if I were to run nitrous, what would be the most I can run safely on my setup? I would be running a wet shot.

I've been searching for the answer but its been pretty difficult to find.

 

150 and anything more is pushing it bvan. trust me

 

I would think it would just depend on the whp of the injectors. Do you have a sense of how much whp a 450cc injector can handle?

 

let it be known i have a personal preference for NX kits. i think they make the best stuff in terms of readily available mass market kits. anyway, equating what people consider to be a safe power level for boosted b20/v setups, i'd look at a conservative 75 shot on that combo that must be well-tuned at that. i'd be worried going over a 100 shot, but i'm very conservative. my concerns are the cylinder pressures on those b20 cylinders- the juice, compression, revs of the conversion...i'd be very careful. blockguards are not in favor at this time but i think that a well-designed unit might be worth trying. and head studs too.

also, to me it doesn't seem like you need the injectors. if you run a 255lph high pressure pump, you can safely run 280cc 97+ H22 injectors at a higher static pressure (ie 55 psi) and submaximal duty and still cater to your setup's needs. you could go up to 310, but honestly 450cc seem to be overkill to me when the kit will have it's own fuel supply within the kit/nozzle.

maybe someone will chime in with more experience with that exact setup, but it might get more attention in the forced induction forum.