from what i read up, with a tune/chip/flash it makes a small noticeable difference. the main difference is being able to maintain boost at higher rpm, after where the K03 will fall on its face.

 

I'm preparing for a turbo upgrade in the future and have been reading a lot about how the K04 isn't what I thought it would be. My goal is to eventually push 400 to all 5 wheels (even the spare jk). Love to hear any thoughts about the best turbo for that range.

 

Gt30-35 series would get you there

 

Thanks! Looking up the info now

 

did you already buy the k04? if so would you sell it?

 

No I haven't bought any turbo upgrade yet sorry. That's why I'm researching now. I still have some steps to take before purchasing the BT.