I recently took my ISF to the shop and I discovered I had PPE branded headers. Only problem is that I don't know which ones exactly they are. Are the UEL or EL? Does anyone know how to find out or what to look for?

Thanks in advance.

 

If the car sounds like normal v8 its uel, if its more high pitched like a e92 m3 its prob el

 

With the UEL there will be a pronounced drone at 2K RPM. With the EL the drone will be much less.

 

Kind of easiest way I would think is get on youtube and search for ISF header/exhaust vids. Vast majority are UEL, if your car doesn't sound like those, then more than likely you have the EL headers. Because UEL and EL ISF sound distinctly different