I emailed Borla last week about the difference in the XR-1 Race and Sportsman mufflers. I just got there reply today.

Thank you for your interest in our products. The main difference is the core. The multi core is designed to be smaller yet offer great noise suppression without affecting power. The sportsman is a single core designed for big power as well, but will be louder.

Thanks,



Chris Mann

ChrisM@Borla.com

805-986-8600 ext 270

701 Arcturus Ave.

Oxnard, Ca 93033

 

so the sportsman's louder than the race, I thought Darren said the same thing about the core

 

huh interesting. Ive got 2 XR-1's headed my way. thanks for the report Frog

 

^ yes sir.

 

Ya, that's backwards from what I would expect. I guess with 3 tubes help to damping the sound where as the single tube is just straight threw it.