I put in 780s after I would hit 96-97% IDC on the 550s
Here is a log I ran today.
ArcII 87mm
780 PTE injectors
propane
Running 20psi on this run
WOT on 2nd and 3rd
Notice timing at the end of 2nd hits 39 and no knock and 3rd gear pull is damn close to that. IDC of 70%
I know O2s are 98 but with propane O2s seem to run higher on the O2 sensor and runs great on my car.
