I've got one brand new high flow test pipe with O2 bung in it for the 97-01 honda prelude. It's not a cheap one from ebay that cost $24.99. The construciton is awesome, sound and power is unbelievable and it will not throw a cel. I've had the exact same one on my SH for over a year and never once had a cel or atts light. I bought it for a local about 2 months ago and never seen him again. I've got over 75 bucks in it. Truthfully a high flow cat is a big waste of money and they sound like crap after they break up. This test pipe doesn't rattle or sound raspy. It wont rust. Mine still looks new after a year of Ohio wheather! I'll try to post the pic of it up on here but if I can't figure it out give me your email and I'll send you the pic.