xdxoxuxgx
15+ Year Contributor
- 395
- 0
- Sep 25, 2006
-
Gilbertsville,
Pennsylvania
I have a rewired Walbro 255 HP (with AFPR, don't worry 
) and 560's but under wot from like 4k and up I need to add 20% air on my AFC, which results in an A/F ratio of about 10.7:1. I know it's a little rich, but with more fuel being supplied, shouldn't I be taking away air in the AFC? I even hit fuel cut once or twice. I think it might be because the studs on my fuel pump assembly broke so I drilled the wholes out and put self tapping screws through. That might not have sealed enough so maybe that's why I need to add that much fuel, I was thinking about trying this http://www.dsmtuners.com/forums/articles-engine-fuel/256249-replacing-broken-fuel-pump-studs.html . Do you guys think that would solve the problem, or does it sound like something else?
) and 560's but under wot from like 4k and up I need to add 20% air on my AFC, which results in an A/F ratio of about 10.7:1. I know it's a little rich, but with more fuel being supplied, shouldn't I be taking away air in the AFC? I even hit fuel cut once or twice. I think it might be because the studs on my fuel pump assembly broke so I drilled the wholes out and put self tapping screws through. That might not have sealed enough so maybe that's why I need to add that much fuel, I was thinking about trying this http://www.dsmtuners.com/forums/articles-engine-fuel/256249-replacing-broken-fuel-pump-studs.html . Do you guys think that would solve the problem, or does it sound like something else?
