I went to the Brenspeed website ( http://www.brenspeed.com/mustang_2005/airkittuner.html ) interested in purchasing a tuner. They have several packages ranging from mid $500 to high $600. Most of the claimed HP gain numbers seem to be the same. What's the difference in these different packages? I see JLT, C&L, BBK, WMS...... Is there really a difference?
So it basicly falls down to personal preference(brand, looks and word of mouth). I'm sure the WMS may prove to be the hardest to sway the dealerships in your favor come warranty work under the hood being that you cut and splice the MAF wires. Everything else can be put back to stock...just will take alot longer then the more conventional CAIs.