 » Site Navigation | | | | » Recent Threads | | | |  |  |  |  06-21-2006, 02:11 AM | #1 | | Senior Member Join Date: Oct 2005 Location: Puerto Rico Posts: 885 |  Eliminate the cat?
I read some thread but not find a complete answer.... i know that the CEL was coming on, but is good or bad idea remove the cat? In Puerto Rico the people remove it from the cars to run better, but it work in 1997 TI, or it retard the ignition??? Please i need a answer __________________ BMW...MY NEW TOY  Mods: Some plastic parts, ///M Wheels and me |  |  | | 06-21-2006, 02:16 AM | #2 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |
Quote: | Originally Posted by FATHER I read some thread but not find a complete answer.... i know that the CEL was coming on, but is good or bad idea remove the cat? In Puerto Rico the people remove it from the cars to run better, but it work in 1997 TI, or it retard the ignition??? Please i need a answer | You can remove it. __________________ 
'99 Dinan M3 | | | | | 06-21-2006, 02:18 AM | #3 | | Senior Member Join Date: Oct 2005 Location: Puerto Rico Posts: 885 |
Ok i goin to the muffler shop tomorrow, also what about soud, i not like the loud sound, my TI have a resonator and 2'' pipe with stock muffler and no sound.... __________________ BMW...MY NEW TOY Mods: Some plastic parts, ///M Wheels and me | | | | | 06-21-2006, 02:26 AM | #4 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |
Quote: | Originally Posted by FATHER Ok i goin to the muffler shop tomorrow, also what about soud, i not like the loud sound, my TI have a resonator and 2'' pipe with stock muffler and no sound.... | I felt a substantial increase in power when I installed the Bosal cat-back system. The supercharger needs a nice exhaust system to breathe. I would replace the stock system with 2.25" or 2.50 piping if you can have the muffler shop do it. To make it sounds really nice, install 2 high flow resonator instead of the cat. The exhaust system sounds really tinny and ricey if you don't install resonators. __________________
'99 Dinan M3 | | | | | 06-21-2006, 02:59 AM | #5 | | Senior Member Join Date: Oct 2005 Location: Puerto Rico Posts: 885 |
my pipping consist of 2'' pipe with aftermarker cat and high flow resonator, the the stock muffler, so tomorrow i when to the muffler shop to remove the cat and put other high flow resonator, and change the muffler with a racing type. i think in PR is about 300.00 __________________ BMW...MY NEW TOY Mods: Some plastic parts, ///M Wheels and me | | | | | 06-21-2006, 03:58 AM | #6 | | Senior Member Join Date: Oct 2005 Location: Puerto Rico Posts: 885 |
I have the stock muffler, you think that i change it or not,i'm planing put 2.5 entire pipe with two high flow resonator, not cat and stock headers, i like the stock muffler because are silent, but i dont know is it eliminate the flow.... __________________ BMW...MY NEW TOY Mods: Some plastic parts, ///M Wheels and me | | | | | 06-21-2006, 04:02 AM | #7 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |
Quote: | Originally Posted by FATHER I have the stock muffler, you think that i change it or not,i'm planing put 2.5 entire pipe with two high flow resonator, not cat and stock headers, i like the stock muffler because are silent, but i dont know is it eliminate the flow.... | If I were you, I would keep the stock muffler and see what it sounds like. If you don't like it, you can always install an aftermarket muffler later. I think removing the cat and installing bigger piping will give it a nice sound. __________________
'99 Dinan M3 | | | | | 07-13-2006, 12:53 AM | #8 | | Member Join Date: Jul 2006 Location: Omaha, NE Posts: 59 |
Been following some of the exhaust threads. Dealer says my cat is bad, so I was thinking about aftermarket or remove it (Nebraska doesn't smog check) but I am concerned about whether that would screw up how the engine runs. Also planning to put DASC on and don't know what if any effect. You talk about resonators and muffler seperately. Is the resonator up front and muffler near rear? If I go with two high flows and a muffler, which brand? Buy where? | | | | |
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