E36 TRUE dual exhaust questions...
I was looking at some diagrams of exhaust setups for 95 m3's versus '96-'99 m3's and noticed that the obd1 setup is not in fact a true dual exhaust. There is a Y joint after the cats that the oxygen sensor plugs into, and then another Y that makes the rest of the exhaust dual again. Is this the same on my 1994 325is ? If so, how can I convert it to a true dual exhaust setup without comprimising my o2 sensor's readings? Can I plug it into just one of the exhaust pipes and still get fairly accurate readings?
I'd hate to install my headers, downpipes, free flowing cats, and dual inlet/outlet muffler if there is going to be a Y pipe in the middle of the works.
any help would be greatly appreciated
'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)