A big thanks to Rick for helping me out, I could not have done it without you.
I am busy getting some kits made up as we speak, if anyone is interested send me a PM & I will put your name down on a list & fill you in with the full details. I will be selling them through the forum shop soon.
Basically we have a cheap fuel mod that adjusts the fuel mixture across the whole rev range, it will help the A/F ratio when installing a DNA stage 2 filter or exhaust Cans or both.My mod is a very simple way of tricking the fuel injection to make it run a little richer when installing bigger filters or Cans.
A Power Commander is still the best tuning device by far & is far more advanced in tuning then my mod, if one can afford one with a custom fuel map made on the dyno then that is the way to go.