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?

TIA,

Mine makes a cricket sound.

here we go again. stupid crickets. lol.

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Ryan Walsh, 1997 200sx SE-R w/ ES mounts, JWT s4's, AEBS 4-1, PR CAI, Sportlines/AGX's, Bridgestone re730's, Matrix FSTB, Stillen GTR grill