Like the title says Engine Noise: Raspy/sound @ ~2800rpm.
This has happened every since I got the car, and I've also noticed it for the many years my Grandmother had it. And its seem to have gotten more noticeable once the new headers and catback were installed. Car is in excellent shape, no leaks in the exhaust, low mileage.
The sound ONLY ever happens on acceleration up to and around 2500-3000rpm. and I can hear it mainly from the passenger side. Once I hit cruising speed it just goes away until I accelerate again.
I went for a ride with Justin L tonight and his car DOESN'T have that sound. Even with his crappy ass old exhaust never heard it. (Now he has a new borla)
I still have the stock cat, and will be ordering a high flow tonight.
Thank you for adding the (new borla) haha :-) dude I think it has something to do with the auto trans... possibly something with the difference in the axles? Or that your exhaust is still somehow hitting the cross member...
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Exhaust shields aka heat shields vibrating an creating resonance... that be my guess... that or your muffler bearings... they can be found right next to the blinker fluid.... if your low on that you can find it in the auto parts store next to the prop wash and alluminun magnets...
Get under the car and make sure that the exhaust isn't touching anything metal like the cross member. I hate a slight metalic vibration after getting the exhaust worked on and it was because the flexpipe was riding on top of the crossmember. This probably isn't what you've got because it's a different noise from you but IT'S JUST AN EXAMPLE of what to look for. Here's a video of me taking it back to the exhaust shop and how he fixed it.