Originally Posted by xXxCarBoyxXx

I'm sure this has been answered somewhere but I've been looking around and there are a lot of mixed answers flying around.
I'm looking to get the Fast Intentions CBE with the 12 inch resonators in the near future and I'll be installing Post-MAF tubes and k&n drop ins. I wont be changing the headers and I probably won't be getting HFC's any time soon.
With these upgrades will I need to get a tune? Will the car run fine and not too lean with the stock tune?
Thanks