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Thread: Verify nitrous jetting

  1. #1
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    Default Verify nitrous jetting

    I got my plate kit pretty much installed. Just a little wiring and the AEM wide band left to take care of. When installing the jets I noticed NX listed 50-100-150 jetting guides. Skipping over 125. I figured 125 would be a good size to start with, but I wanna make sure I've got the "correct", or close to correct jetting installed. 57N 32F is was I ended up with. Does this sound like a reasonable starting point?

    Thanks all!

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    niebs's Avatar
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    57 is a 125hp jet. You want to start there? Do you have experience with nitrous before? I would start lower and work up on it to play it safe.

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    I do have some nitrous experience (a C5 and a 2V mustang) however, not with this platform.
    Ryan sent me over the tune a couple days ago. Planned on making a go at it next week...
    However it's sounding like I may need to start with a 75 or so? Thoughts?

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    niebs's Avatar
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    At least you have some experience then. I would start with a 75 and work up on it. Just to be safe. You would hate to hit it with a big shot just to find out that something wasn't up to it and you end up with a hole in a piston. At least with a smaller shot you can get by and fix whats needed. Everyone seems happy with Ryan so I'm sure he'll get you straight with a tune... I believe Osee on here, hits his with a 150 shot.

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    Niebs, Thanks for the info and advice.
    Also, I'll be using the NOS brand window switch, at what RPM's should I activate and deactivate the nitrous?
    Is it as simple as activating at 3K and deactivating just before redline?

    Thanks!

  6. #6

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    Why deactivating? Not between shifts I hope
    1998 Silver RC SLT - Hughes 2.02 Heads, Mopar M1 4bbl Intake, Mopar 4bbl TB, 230/236 .515/.515 on a 110, 1.6 Roller Rockers, 4.10's, Spintech Headers, 3" Duals, X Pipe, Chambered Mufflers, 4/4 Drop, 727 Full Manual w/Transbrake, PTC 4500 Stall


    12.90 at 104mph

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    deactivate= poor description at what i was trying to say.

    My tuner set my Hemi truck window switch to only spray selected RPM's.

    I figured this worked in a similar fashion.

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    niebs's Avatar
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    3k is a safe start. You can trying bringing it sooner once you get everything situated and a good tune in it. but you will need to keep eye on everything. cylinder pressures get high pretty quick at lower rpms. You'll also want a WOT switch.

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