well got my downpipe crushed so i had a new one made didnt have enough funds so this one is a little shorter(ends close to driver seat) than my orignal one (ended around my fuel pump is) but its not long enough to plug my o2 in so i didnt even get a bung made for it. what does it effect now that i dont have an o2 sensor anymore, no cel is on.

 

no o2 = no correction for fueling in the engine. get it fixed. unless you have an ems that is tuned in open loop, there is no correction for fueling while cruising.