I was hoping for 12hp to 15hp gain with the headers but actually saw no gains at all. I've done a few mods to my car but I was really hoping for something out of the headers. That's why I posted this, hoping that someone who knows can honestly tell me that a reflash will matter (or not ).
You should definitely see those type of numbers from the headers & y-pipe. The problem is you did not use the same dyno as your 1st dyno for comparison. The only way to document accurate increases is to use the same dyno and preferbly the same operator as well. Even then results could still vary but will be the best you can do.
Scott
2000 Contour SVT #1464
Mustang Dyno: 171.6hp/145.3lb
Dynojet Dyno: 171.1hp/148.9lb
1989 20th Anniversary Turbo T/A "Indy 500 Pace Car"
#1376 of 1550 All Original, 46k with a few mods
2002 F150 SuperCrew
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2002 F150 SuperCrew
