pop off pressure question

[Ottis]

If you raise your pop off pressure does it effect high speed jetting? will a higher spring lean the fuel supply through the entire range or just the first 1/3. thanks for any help!!

 

[waxhead]

every time you pull out fuel down low it effects it up top as the up top is a total of all the jets flowing
but up top the n/s will more than likely be open anyway so the effect will not be much if at all

 

[SuperJETT]

Right, even a 1.5 needle will flow all the fuel you need and once the needle is open, it doesn't affect anything.

 

[Ottis]

I'm alittle rich right of of idle to about 1/3 throttle, and I've been lowering pilot jets with a small improvement. I was thinking of going back up on the pilots and going one step up on the spring but was afraid it could lean out the top end. the plug burn is decent but at idle it just pukes black stuff out and loads up, also starts easy. any ideas?