Hey, so again, i have a turbo b16 etc etc... i still have my cat on my car and recently ive been noticing a lot of crap coming out of my exhaust.. it looks like ash but darker, i thought it was just buildup of un combusted fuel because i still need to get tuned and am running stuper rich. could it be my cat getting burned out? maybe? and if it is... instead of gutting out my cat should i just wait for it to fall out of my tail pipe lol?

 

Ditch the cat... i went from a 2.25inch catback to a 3 inch turbo back and not only picked up an *** ton of power, but also about +2-4mpg...No bullshit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by w0ng_sta &raquo;</TD></TR><TR><TD CLASS="quote">Hey, so again, i have a turbo b16 etc etc... i still have my cat on my car and recently ive been noticing a lot of crap coming out of my exhaust.. it looks like ash but darker, i thought it was just buildup of un combusted fuel because i still need to get tuned and am running stuper rich. could it be my cat getting burned out? maybe? and if it is... instead of gutting out my cat should i just wait for it to fall out of my tail pipe lol? </TD></TR></TABLE>

cat + turbo don't mix

 

Mine was burning up on the dyno...need to retune without one. Don't use one.

 

Here is a link to some pics of my burnt cat:
https://honda-tech.com/zerothread?id=1517178

To keep the car somewhat quite for my neighborhood I installed a metal-core cat I got off ebay. I don't have power lose numbers, but it was unnoticeable for daily driving. On the track, I setup a test pipe and it's all good.