Muffler delete.. Next step.
Muffler delete.. Next step.
So got rear muffler delete about 2 weeks ago or so, and i think i am going to do mid muffler delete as well. I want it louder. Bets on how bad my drone will be?
On my play toy Fiero I used a cherry bomb muffler that at about 2200 rpm the drone would drive you nuts. Maybe a resonator would help if you have issues. Seems a good exhaust note is a matter of experimentation.
Senior Member
Joined: Oct 2009
Posts: 359
Likes: 7
From: Las Vegas NV
While you are at it should also delete the 2nd CAT together with the 1st muffler to gain about 18HP.Without muffler you will be crazy loud and it doesnt sound sporty at all.Take both CAT out have a 3" DP installed and leave the OEM muffler on or choose a muffler but please have one installed. 
I'm in Texas, and at the moment, i barely pass inspection so have to leave the second cat in place. And without the muffler sounds really bassy. Me and a friend did it both, 1.9's are not great sounding engines as it is.
My friends Audi
YouTube - ‪Audi A4 B6 Quattro Muffler Delete‬‏
My 1.9
YouTube - ‪2001 s40 1.9T Exhaust‬‏
My friends Audi
YouTube - ‪Audi A4 B6 Quattro Muffler Delete‬‏
My 1.9
YouTube - ‪2001 s40 1.9T Exhaust‬‏
Senior Member
Joined: Oct 2009
Posts: 359
Likes: 7
From: Las Vegas NV
I dont know the rules there in Texas but I was told the 2nd CAT is required in CA only to complie with the tight emission rules there.Still dont know if there is an actual visual inspection all the time or only at the first time.The 2nd CAT is not being monitored by anything its just there to hog the gas flow so if there is no visual inspection in Texas which would require you to have it then just take it off.
See if there is no visual inspection there and they not measuring the exhaust content at the tail you can take both CAT out and use a cheater to fool the ECU not to throw a code for it.
Still I was told that this car did pass inspection with only the 1st CAT in place when they carried out a smoke test at the tail.
See if there is no visual inspection there and they not measuring the exhaust content at the tail you can take both CAT out and use a cheater to fool the ECU not to throw a code for it.
Still I was told that this car did pass inspection with only the 1st CAT in place when they carried out a smoke test at the tail.
They use basically a sniffer and an ECU reader, works like an o2 sensor and put it in the pipe. But shop i use said they have someone who will pass Volvo's since 850's here have a hard time passing. I might do it.
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