Any Hedman mid length header dyno results?
01-27-2016, 03:47 AM
#6
I have done back to back tests with jba shorties and 2.5" off road y-pipe switching to 1 3/4 long tubes and 3 " y-pipe. I picked up 15 HP if my memory is correct.
This was on a heads and cam automatic car. On a dynojet. My car ran 7.20s with the shorties.
My point is it made more power but the shorties weren't hurting it that much. I ran 7.10 with the long tubes in a little better weather.
This was on a heads and cam automatic car. On a dynojet. My car ran 7.20s with the shorties.
My point is it made more power but the shorties weren't hurting it that much. I ran 7.10 with the long tubes in a little better weather.
Last edited by zzracer; 01-28-2016 at 02:36 PM.
01-27-2016, 06:17 PM
#7
This is an easy question in one sense, subjective in another. Shorties are better than stock, mids better than shorties, long tubes better than mids. This is as far as power goes, assuming you tune it. If you are going to do other mods and get a tune, you may as well go with long tubes. If headers and CAI are all you'll likely ever do and you want an easier install, then shorties or mids can make a lot of sense. It really boils down to what you like and what you want for the car.
