Ok So far just A Blitz DTT II, BOV and JIC Magic exhuast. What else might I look into without running into quarls with the ECU? I was thinking a Down Pipe and a Perrin filter, but Should I be investing in an A/F controller like Apex'i AFC II, Or is there something else I should look into.

 

Engine management.

Stock Suby ECUs are smart enought to back off on timing and increase your mixture with your current and future mods (if you don't have some sort of engine management). I would recomend getting a reflash, a professional tuner can tune your car and pull the most out of your car's aftermarket parts.

A down pipe can cause CEL lights from boost creep.

A perrin Big MAF intake requires tuning.

You don't need an AF controler at this stage.

I would recomend taking the BOV off and returning to the stock BOV. You don't need it until your running 18 plus psi of boost and it can make your car run bad.

 

OK, thx