i second that, y-pipe it and it'll run fine....it will probably sound great too!
Thruway is a great company to deal with as well. I've only dealt with the one on eglinton in scarborough mind you, but they helped me out huge with mandrel bending pipes for my s/c kit, and were very professional and helpful too.
'94 Supercharged E36 325is (150,000 original km's)
-Vortech V9 G-Trim @ ~10psi w/ BOV
-255LPH Walbro fuel pump
-TEIN SS Coilovers w/ Pillowball mounts
-Keskin KT1 17x8.5 & 17x10
-Remus full catback
-Authentic Rieger Infinity I body kit
-SMT6 EMS (Untuned)