Ok heres the deal, I have an F23a1 Vtec engine! I have an F-max turbo kit on it with 2 additional injectors and a MSD BTM so I can retard my timing if needed! Also I have a 2.5" catback! What I am wondering is does anyone else run 10 psi on this engine or do you think its too much, with proper tuning that is! I have talked to many people who said with proper tuning that would be fine but I just want to check and see if anyone else runs that high on stock internals! Also the car is running rich since I am at high elevation so do you think getting it fined tuned will make a noticable difference! Sport Compact wrote an article and said even the weakest honda engines (d-series) can handle 8-10psi do you think this is true! My engine has a low compression ratio of only 9.3:1