09-09-22, 04:41 PM
(This post was last modified: 09-09-22, 04:42 PM by Falcon 269.)
My five pennyworth. 
Ignition advancers are worth fitting but, in my experience, won't come close to restoring what you've lost from not having a working EXUP.
There's no carb mod/tuning solution that will do it, either.
Black Widow headers are no different than the stock headers minus EXUP. Your results/opinion may vary ...
Take your time and scour ebay/breakers etc for the EXUP valve components. Early model R1 valves are identical, so search for old R1 exhausts and scavenge what you need from one of them.
Ignition advancers are worth fitting but, in my experience, won't come close to restoring what you've lost from not having a working EXUP.
There's no carb mod/tuning solution that will do it, either.
Black Widow headers are no different than the stock headers minus EXUP. Your results/opinion may vary ...
Take your time and scour ebay/breakers etc for the EXUP valve components. Early model R1 valves are identical, so search for old R1 exhausts and scavenge what you need from one of them.