Hello.
Currently running with K04 thinking of upgrading to GT28rs and a HKS Additional Injector Controller to compensate for the need of bigger injectors. Is there anyone running this set up?

Does anyone running GT28 can recommend A/R and trim numbers

And thanks for reading in advance

 

It's probably going to be more cost-effective (not to mention, MUCH smoother and easier to tube) to just buy bigger injectors, rather than buying additional injectors, customizing the fuel delivery to them, dialing in the AIC once you buy it, etc. Don't complicate things more than you need to. Get your bigger injectors and you'll be able to buy a tune that is calibrated for them. Done.