Gutted RX 1 Exhaust Muffler Jet Higher???

[pdrmike]

I cut open my muffler and gutted the inside today on my 04 RX 1. Do you think i will need to rejet for this? Has anyone else done this? What have you been seeing. Thanks, Mike

 

[JDMCRX]

I would do 137.5 mains and move the main jet needle up one clip. These suckers run lean stock lol

josh