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Discussion Starter · #1 ·
just installed HS header onto a 97 se-r, motor started making weird noises but only when in gear, sounds like a air is leaking. everything was tightened and done right. engine light also came on after 25 miles or so???
anybody know what this could be?


2,463 Posts
Sounds like an exhaust leak. Just to double-check:
Pull the code and see what the error is.
EGR tightened on header
EGR tightened on other end
O2 sensor tightened
Re-torque manifold to 35 ft-lbs
Check primary-secondary connection and secondary-cat connection
Did you mess with the intake at all while doing this?
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