90 EF sedan with D16a6 mpfi swap. my car has always been quiet, stock exhaust mani stock piping and stock muffler.

but yesterday on my way home i noticed that it sounded as if i had a huge muffler and was very noisy. Also, when i would stomp on the gas, it felt like it was lagging a little bit and also had some vibration under my seat(not sure if vibration on passenger side cuz there was no one sitting there).

the only thing i can think of is that my flex pipe broke and my header is now vibrating against the oil pan, or the piping is hitting something. im not sure, its low as **** and i scrape from time to time.

 

jack it up and give her a look

 

im at work so i cant!!! ugh the rattling is pissing me off. i can smell the exhaust fumes so i know something broke apart down there, im hoping its just the header to piping flange and a bolt broke so it separated.

those pieces of flex pipe are expensive. well i wanted to get some DC headers and straight pipe all the way back so maybe this is my chance.