DTR

Alright, here's the rundown. Whenever I hit 1500 rpm's, I hear this ungodly rattle/grinding sound coming from around the left fender area. It's really hard to describe, but if you'd like to hear it, I can email you a recording... Now for the frustrating part. It's only at 1500 rpm's (not 1600 and higher or 1400 and lower) while there is a load on the motor, which makes it hard for me to pinpoint exactly where its coming from. I can't replicate it in Park or Neutral (yeah, auto tranny if that helps). I also have long tube headers with electric cutouts right after each collector. The sound doesn't happen when my cutouts are open... I asked my dad and brother about it and the only thing they could come up with is that i might be missing... So tonight i swapped all my plugs out, but still no joy. thoughts?

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