42OO rpm

[Blue shadow]

At 20 psi with meth and c-12 race fuel my wot a/f is 12 .4 with 147.8 mains .This is ,but at engagement at 4200 rpm she 13.5 ,is that ok or should it be more rich ?thanks

 

[Skydog]

13.5 sounds fine to me as long as she drops fast when boost comes to town!!