lean nytro

[sledhead162]

how do we get our powderlites nytros not to be so lean at full boost 12-14 lbs with the rb3 im running straight av/ and it doesnt seem my fuel reg is working under boost ? any body else have this probleme i did tap my charge tube for the reg. boost supply im at 48 lbs fuel pressure and 5k elev.

 

[WingNutRacing]

lean???

What map are you running??? What are your a/f numbers???

 

[sledhead162]

i am running that map for the reg update off of totally yamaha a/f at 13-13.3 or 4 but my fuel pressure gauge isnt coming up on boost

 

[skydog]

Well

fuel pressure gauge isnt coming up on boost


Look in to this first!!!

 

[Lococoin]

How are you checking that your fuel pressure is not coming up in boost? It should be going up 2 psi in fuel pressure for every 1 psi of boost. I verified mine by pumping in 10-12 psi of pressure using a pump and my vacuum gauge and watched what the fuel pressure gauge shows when the sled is idling.

 

[Blue Light]

Same problem, WTF?

Also, Its inconsistant. Noticed that on first stab of the throttle numbers would climb, then I could burp the throttle and go right back to WOT and numbers would be low...real low, like time to turn up the boost????????????? Gauge is OK, no boost leaks and 46+ #'s.

BL

 

[Blue Light]

ttt

 

[sledhead162]

found my prob nut came off adjuster screw boost was leaking around threads so i installed new o-ring and nut and still bleeds off real slow when u put pressure to it so im gonna fix it with some silicone around the nut