Assuming it is the catalytic converter ('99 that has never been replaced. had vacuum issues in the past), would this be a good opportunity to get more power while replacing parts?
On a side note, what are these?
http://www.ebay.com/itm/Porsche-986-Boxster-2-5L-97-99-Performance-Catless-Pipe-Test-Pipe-Pipes-in-50mm-/230950744471?pt=Race_Car_Parts&hash=item35c5bcb197&vxp=mtr
Will these solve my CEL? They claim there's no CEL with this unit.
The 986 Boxster MAXFLO 2ndary Catbypass Pipes by Fabspeed claim that it solves my CEL as well.
https://www.fabspeed.com/Boxster.html
If I can increase my power for the same price AND get rid of the CEL, that is ideal.