Thread: New to N20 need advice.

here's the story:
So a friend of mine traded in his Hyundai Tiburon with a NOS wet kit, the dealership said it had to come out the car so it dont depreciate value, so my friend called me and told me if I remove it it was mine so I did, Now I'm with this kit and my secondary SR20 powered vehicle is a perfect candidate to try this out.

The car is a 98 SE-R that I just removed a turbo kit but left the wahlboro fuel, ACT clutch, prothanes and I still have the NGK colder plugs I used while turbo. I think it seem like a perfect candidate to try out 75 shot wet.

should I use a FPR, I already have an aeromotive FPR but I will need the adapter to cover the hole for the stock FPR or
is there a way I can attach a secondary FPR. Maybe to the fuel line going to the fuel jet on the NOS.

I would just put the 75 shot in and spray it. With a Walbro 255 you have no worries. The SR LOVES a 75 shot.

leave the stock fpr in place and stock injectors add a t fitting to the rubber supply fuel line goung to the fuel rail. if you use rubber fuel line from the t to the fuel solinoid make shure its high pressure fuel injecton hose not carb hose

on my b14 i have rubber to the fuel solinoid and to the nos nossel

on my b13 turbo car i have a bress filling with a -4 an fitting and stainless fuel line routed to my fuel solinoid.

o btw make shure once you get the nos in the car and you are ready for a test run do the first run with the nos bottle closed so it only injects extra fuel. car should bogg bad and blow black smoke. if car runs ok then you have a problem with the fuel solinoid.

i melted a hole in my b14 s head when the fuel sol stuck closed and the back fire also bent the throttle plate .

nos is alot of fun stay under a 150 shot unless you get a direct port fogger

thanks for the info, it makes a lot of sense to test the fuel first also I have a another question, where do you suggest to put the nozzle on the intake?
the instructions say 6-12 inches from TB. I heard that far away was better because it gives time for the fuel and N20 to mix before going inside the cylinder. Is that true?

Yes you want it about 6 inches from the TB. Just start off with a 50 shot and work your way up. If you have any questions pm me.

you say I have to start off with 50 shot first and work my way up well if thats a must let me know because I only have the 75 shot pill that is currently installed, can it be dangerous to start with the 75? if so can you explain why?

the only danger there is if you have a weakness in your fuel system. also retard your timing 4-5 deg

do you have a air fuel gauge?
do you have a timing light?

i prefer to run a fuel press gauge so i can see the press drop if pump fks up or some other pressure drop.

also change your fuel filter while you installing the sys

I do have timing light, so I'll have to retard the timing to around 11*-12*.
I dont have a air/fuel gauge though, I dont think it will help unless is a wideband.
I do have a fuel pressure gauge but it's on a aeromotive FPR and I dont think I can use that one but I guess I can get one at autozone for cheap and at the same time get the new fuel filter.
But know when you tell me to get a fuel pressure gauge to monitor the fuel pump, I'd figure you are refering to the one that can mount inside the driver compartment that way I'll know if FP took a dump while driving, right?

Dont go by the bull**** trick of retarding the timing 2 degrees for every larger jet. Put the timing at 15 degrees. I have sprayed the 75 shot on the stock timing for about 10 bottles worth.

2 degrees for every 50hp.
yes the knock sensor works quite well and if you want to trust ir its up to you.

for the first couple of runs i would retard the timing and once you have a feel for what normal sounds like then set timing back to stock.

ussally when the ecm detects nock it agressevlly retard the timing causing inconcistant hp results.

it realy depends on your engines condition. things like carbon biuld up and mecanical noise that is already fooling the knock system.



it looks geto but if you pull one of the winsheild washer sprayers off the hood a 1/8npt fitting will fit thru the hood allowing a fuel press gauge to be mounted.