MI4NKuwait;
I drove the CN Civic SI with Guardian.. That shit was sick.. Air/Fuel Ration was straight the whole time no worries.. and with Guardian you can turn uip the boost no problem and Guardian will reconfigure your fuel output to match the boost pressure...
No running lean problems and No return Fuel line...Perfect tune with out paying some local Honda GurU 400 to get on a dyno and tune you up...