First, I am completely aware of the dynos (albeit not on '13 SHOs by any of the major manufacturers) that are available for K&N, AirAid, and Hennessey CAIs and have corresponded with all of them. I'm not trying to debate the idea of a CAI or dis anyone at all, yes... denser air means more power, and there are other reasons than just air to have one. This is just what happened.... and my thoughts on what else we need to know.
Here's an interesting performance fact... at least on my '13 SHO... regarding turbo inlets/air induction. During the testing done recently on multiple sets of downpipes at Black Market Racing (thanks 4DR) using my SHO with stock tune we did this test:
On one occasion after the pull with the pipes we completely disconnected the air intake box from the "saxophone" turbo intake... no filter, no box, and the hood was up with a fan blowing on the engine, temp was about 79 degrees and humidity was about 30%...... Just the big open pipe drawing air.
We were astonished that the difference was less than 3 HP when compared to the pull with the OEM Ford induction in place... This was with stock tune and no other performance mods on the car at the time.
After I get tuned (with down pipe adjustment, but all O2 sensors on) we will be testing all the pipes again as we feel the gains will be larger. I hope Mike and Jeremy will be agreeable to testing at this time. I actually am starting to feel that the major restriction is after the SHO filter box. If the tune doesn't make a difference I'll be pretty sure that we need to work at least as hard on the portion of the air induction after the filter. In fact I think bpd decided this when he built his "one of" custom CAI.
