So the other day i had scrapped my bottom somewhere because the turn in to the road was at such a hard angle it had bottomed out and after that there was the awful sound coming from it i had tightened all bolts on the test pipes including the bracket that holds them together but it didn’t look like the test pipes scraped, the noise is really only present around 2-2.5k rpm i can’t figure out what it is maybe someone here recognizes it

 

The slight rattling does sound like you have an exhaust fitting loose or perhaps it's scraping against the heat shields. If you put in test pipes, they are close to the heat shields that normally keep the catalytic converter heat from getting into the car. See if any of those are bent or loose.

If you know you scraped your undercarriage, then put the car on the lift to look for the scrape marks, that will give you the impact and in general I'd expect the issue to be nearby... or have a professional check it out.

Good luck,


Rick