JPR AutoSports

As I said before, WJP in Danbury did a beautiful job of modifying a UR dual exhaust with down pointing tips and a resonator for use at Lime Rock. You can see the video of the LRP event but the sound difference doesn’t really come through. The UR exhaust is a bit more restrictive and about twice as heravy as the AMS muffler and so I was worried that the car’s performance would be negatively impacted. I also noticed that, at idle, the car was still pretty loud and so I worried that we hadn’t done enough.

Good news though, that the resonator and mufflers really took hold and reduced the output when at speed. Somewhat surprisingly, on the straight at wot, I could for the first time, hear the motor and car and not just the exhaust note. Comments from SCDA staff were that the car is MUCH quieter. I’m not sure if track staff were checking but consensus was that my car was by far no longer the loudest. Very nice, and hats off to Wayne for fabbing up a great solution. I can now race at LRP.

The exhaust is heavier but I didn’t notice. Not sure of the performance impact but I turned a few sub :59 laps with my best being :58.47. This was my fastest by almost 1.5 seconds and so speaks to the EFI’s tune and the performance of the car and of course, the exhaust. Good stuff.

Mine is not quite this polished, and the tips point down. I’ll update with a better pic that reflects some very nice welding.