Too high Hydrocarbon on emission tests-Help

[Mango]

Wyoming has no emission test just run it

 

[AuroraGirl]

Have they shared with you any additional information on those 4 barrel holley's? Have they done the Tom Lowe modification where you take a 600 cfm or 750 cfm holley, and modify it to be a 3-barrel? It runs on one barrel and has the two secondaries for get-up-and-go.

yes, good questions, gets to the heart of the problem and offers a solution that also makes a quirky feature lol

 

[justhorns]

I dialed in another 10 deg of advance, and it runs better than ever.