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1340 Review
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Review on πŸš€ Flowmaster 12518409 Super HP-2 Muffler 2.50" In/Out 18" 409S - High Performance Muffler for Enhanced Flow by Jeremy Carpenter

Revainrating 3 out of 5

It would be great for an atmospheric jeep.

The sound is deep and not too loud. Installed on a supercharged Jeep 4.0. Unfortunately it doesn't flow well enough. It's only at 3800 rpm and pressure above 6 psi that the tone changes from a 60's hum to a loud hiss. Big disappointment, the sound is amazing at low revs and boost. It would be great for a naturally aspirated Jeep.

Pros
  • Very impressive
Cons
  • Not as thick as other picks