I am puuting a set of new headers and downpipe on my 00 lx, and the cat is in the stock downpipe. has anyone used and had success with defoulers for emissions testing?

there are some that work by spacing out the o2 sensor so it sees less exhaust. so long as it keeps the engine light off, you will pass.

thanks for the quick reply. Are there any places you can refer me to for them?

i havent used any so not sure, maybe check ebay or internet

I used the angled one before, Its pretty legit- I'd recommend it over the straight one because you'll not only get a lower reading of emissions gasses, but you have less clearance issues to worry about with the pigtails of the sensor being jammed up next to your underbody.

I bought mine from http://myworld.ebay.com/ebaymotors/bargainbasementdad/
His build quality is great, but I only see the straight ones listed now. PM him, he might have them.. if not, I'd get this one: http://cgi.ebay.com/ebaymotors/UNIVE...ht_5573wt_1165