Went to my local muffler shop to have the OBX Catback system installed on my 05 Convertible 6spd.

It started up like normal and drove it home about 15-20 minutes and parked it in the garage.

My wife came home about an hour later and wanted to hear it so I turned the car on but took an unusually long time to crank. I shut it off and started it a few more times back to back and cranked like normal.

Waited a few more hours and tested it again before bed and same results as earlier. Slow crank on first start but fine after that. Thoughts?

I mention that they also did my brakes and rotors. Don’t think it’s related but he did mention it being more involved than a normal brake job because of sensors?

thanks for your help