headers for 2006 xj superv8
looking at putting headers on my car.
possible hp gains?
i am going to remap ecu after this mod.
i have changed then intake/pully/cats/and back exhaust.
goal is to be at 500hp.
possible hp gains?
i am going to remap ecu after this mod.
i have changed then intake/pully/cats/and back exhaust.
goal is to be at 500hp.
Cool! A couple questions though:
1.) Are you going to dyno before & after?
2.) Have you replaced or removed the cat converters and/or the rest of your exhaust system for better flow?
Regardless, keep us posted on your progress.
1.) Are you going to dyno before & after?
2.) Have you replaced or removed the cat converters and/or the rest of your exhaust system for better flow?
Regardless, keep us posted on your progress.
header update. i have not located the headesr for my car. i was told by chris at mina gallery that there is not room for headers. i have replaced the cats with hi-flow and the rear exhaust. also did cold intake and new pulley. i have not dyno'd car. current mods are suppossed to add 50-75 hp. i have the ecu retune schedule for next week. i was told it would yeild 40-45 hp in gain. the car is much faster now and i can't wait for the ecu retune. i plan on having the car dyno'd in the near future. my goal was to have a 500 hp beast.
vroom vroom!!!
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