10-19-2006, 02:54 PM
any way you look ay it the flex pipe is a restriction.
in the stock system it is not the biggest, but it still is a restriction.
with a race header, it will become a BIG restriction in the system.
also, not all race headers have a 2.25" exit, and there are only 2 with 2.5"(Kamikaze and JBA longtube), so choosing the right flex is important along with the in the grande scheme of things.
if you have a 2.25" exhaust a Kamikaze or JBA header would be a bit redundant as you want to try and keep the pipe sizing uniform thought the exhaust to minimize flow irregularities in the system.
on a side not, unlss you are planning to run a SC kit, there is no need for a complete 2.5" exhaust.
in the stock system it is not the biggest, but it still is a restriction.
with a race header, it will become a BIG restriction in the system.
also, not all race headers have a 2.25" exit, and there are only 2 with 2.5"(Kamikaze and JBA longtube), so choosing the right flex is important along with the in the grande scheme of things.
if you have a 2.25" exhaust a Kamikaze or JBA header would be a bit redundant as you want to try and keep the pipe sizing uniform thought the exhaust to minimize flow irregularities in the system.
on a side not, unlss you are planning to run a SC kit, there is no need for a complete 2.5" exhaust.