oh ok yea chris on this tread the team driver said to take the restricter out to adjust the idle while im bench tuning it . so on the track if the main and bottom needle is set than while im on the track i can leave the restricter in if i have to make the idle higher or lower ?

he gave me a great bench tuning tips.

yea im getting the 53 pipe than i was just checking out the other pipes.
i was looking at the rb 2045 pipe but no manifold when its $105