When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Given that the stock fuel pressure on a 4th gen fbody is 58ish... On the chart the fuel jet is "N/A"... Does this mean i dont need a jet or that i have to either:
A. Run a 200 shot
Or
B. Use a fuel pressure regulator and jet accorrdingly.
Yeah you may be to small I think even at 200 I was told it's better to run low pressure because the risk of something getting stuck in the jet is higher with such a small opening.
U need to run 55-60PSI jetting chart for stock fuel pressure 4 generation
for 200 shot for nitrous 26 and fuel 14
for 100 shot for nitrous 20 and fuel Not Available it's best to contact NX to give you the jet size , N/A in the chart doesn't means without jets , Because it will runs too much rich .
If you want to run a lower HP jet on a Direct Port, I recommend dropping the fuel pressure so you can run a larger fuel jet. You can do so by either using an independent fuel pressure regulator or going to a dedicated fuel system. If you go with a dedicated you'll get the added bonus of being able to run higher octane fuel when spraying-
It would be something like this. 150hp: 24-N20 / 21- Fuel@5psi
Might even get away with a 20jet on the fuel side but i'd start with the 21 and see how it looks via the plug.
Chris
Chris - I called to speak with you, but I was able to talk with Garret...
Thank you guys so much for the awesome feedback and the knowledge gained during our 5-10 minutes phone call was priceless. And saved me about 100 bucks! You have definitely gained a repeat customer!
I haven't been able to locate a 'Vendor Feedback' section on this forum yet, but if I do I will be sure to share my experience...
Customer service at its best!
Last edited by 08RWDTBSS; Dec 23, 2015 at 12:10 PM.
Reason: Additional text
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
Direct Port Jetting Size 
