wanting to Delete a cat but not sure if ok.. :-/

lavishauto

Member
:
2007 mazdaspeed3
There's 2 cats on a MSP, if I deleted one. Would that be ok? Or does the turbo need the back pressure?
 
you can nuke both of them and you will be fine. You might want to do the non-fouler trick. See the how-to link in my sig on a how-to for that.
 
I actually didn't read the whole thing. Once I finished I knew what it was about. Now for my next question. Should I just put a straight pipe or hollow them out? On my first car I just put a straight pipe but this is a totally different car and is boosted.
 
Will this do anything to the power? If it doesn't give it any I won't mind. I just want it to be louder. It's to quiet and I don't have money for a system. I want the corks port.
 
It will make a difference, with turbos the less back preassure the better the only thing silencing my 323 is a free flowing cherry bomb tube. Also I would just have a pipe welded in or buy the sls mid pipe. Or I believe it's magnaflow that makes it but you can buy an electronic cut out. You can have it quite when you want it or flip a switch and have it loud
 
Ok sweet! Will it make the spool from the turbo louder also? And I'm probably just gunna get a pipe that looks good and weld it in. It can't be louder then the P.O.S cars from where I'm from.
 
Ok sweet! Will it make the spool from the turbo louder also? And I'm probably just gunna get a pipe that looks good and weld it in. It can't be louder then the P.O.S cars from where I'm from.

Yup. I have a 3" pipe without resonators or cats and an injen intake and the turbo is much louder
 
it does make it louder and a little deeper. i replace mine with one resonator and just used a straight pipe for the other.

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