Before and after every mod I do to my Stang, I test the results with my Gtech Comp. and then record my results in my log book. This is how I test:
1) record 3 baseline runs. [ I add the total of the 3 runs, then divide by 3 to get the average]
2) install mod
3) reset EEC, then go for 20 min. run so the EEC can relearn
4) record 3 runs
I then remove the mod, do step #3, then record 3 more runs to see if they match my baseline run, go back, reinstall mod, then step #3 again before doing my final 3 runs. It's a little time consuming but it eliminates any errors, so I know weather the mod truely works or not. I did this test with my Mac fenderwell CAI, then retested with just the open
K&N under the hood.Stock air intake with K&N and snorkle removed. And lastly, the Mac upper intake tube with stock airbox.
After a full day on testing, I found zero gains in any of the tests. On the bright side, I didn't find any loss in HP on any of the tests either.
I never tested any of the other CAIs, just the Mac.