Originally Posted by fat angel
depending on what downpipe you have, and your setup, it is doable to not have to remove it. you pretty much want it past the bellmouth. iirc you have that txs dp, so look for the skiiniest part(about a foot +or-, you can 6" or closer hell) and that's a good spot for the bung. you ever see a downpipe that came with a bung there already? if you think someone could fit in there to weld, then stop in and ask. i can't see your clearance so it's hard to say.
the aem is a good gauge. if i went with one there are only 3 i'd even think of, and that's one.
i have the invidia dp. i was just hoping there was a spot that would be good to weld the o2 from underneath without removing the dp. ill prob remove it anyway due to it will be easier for him to weld and the job will prob be alot more quality