What kind of gains can be seen from alky injection if you are only pulling fuel to keep an ~11:1 ratio and not adding any timing?

 

Only gain will come through increased boost you can run

Also - there is a modest gain through lower intake charge temps - however the principle advantage is when you raise the boost higher than you can on pump gas

 

exactly what we did when tuning my car....did not touch timing....added boost, took out fuel to change the afr....even though meth has a different afr than gas...we were basically watching the nock or lack of we logged.