Depends on what mods you already have. If you're S1 with intake and exhaust and a wga, then you probably won't have much room to take out fuel with the AFC. In that case I would say buy it anyway and then get a return line and regulator. Turn up the fuel pressure and you'll be good for more boost on those injectors. I'm assuming you have an 04 or a S1 03.

Without some supporting mods and the ability to throw more fuel in the equation you aren't going to really be able to do much with the AFC. You'll be able to lean out the car, but you could easily accomplish the same thing with a wga. It's good to have in waiting though. I sold mine and then ended buying another one a few months later.

Not a fan of the RFL. Most of the Neons here in Daytona run them... garbage. Also not a fan of an MBC on the stock turbo, but it'll do.

So what are your mods?