So i think im going to go with the high flow cats instead of changing the midpipe. I was wondering if you guys reccomended any and if I were to do it would i just replace the 4 cats i have with the 2 high flows and connect the co2 sensor and thats it?
hi flow cats
sbland26
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So i think im going to go with the high flow cats instead of changing the midpipe. I was wondering if you guys reccomended any and if I were to do it would i just replace the 4 cats i have with the 2 high flows and connect the co2 sensor and thats it?
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I would just buy an aftermarket h pipe or x pipe with high flow cats with 2.5 piping and get rid of that restrictive factory piping
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Do you have longtubes?
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i thought about cutting out that four stock cats outta my stock h and put 2 hight flow ones...is that possible is it gonna pass smog like that?
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Your better off just getting a new H-pipe with hi-flow cats. Like a BBK or JBA.
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its 02 sensor btw not co2.
and even with two high flow cats instead of your stocker you may need the MIL eliminators, it might still throw a code for catalytic efficency.
ask someone who has done it for sure
Ive always like the SLP hi flow cats or Magnaflow high flow's.
and even with two high flow cats instead of your stocker you may need the MIL eliminators, it might still throw a code for catalytic efficency.
ask someone who has done it for sure
Ive always like the SLP hi flow cats or Magnaflow high flow's.
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i heard the pypes mini hight flow cats are good as well...but yeah has anybody done that cut out stockers and put high flows? anybody?
what I was going to or should I say started doing was,cut the second cats off and add a stright pipe and keep the two first cats.the stock cats on 04's aren't that restrictive. It would prob be cheaper if you get an o/r and then add the hi flow cats to them.unless you can do the work yourself.
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22,072 Posts
Nope. Especially now since they passed the recent restriction that mandates OBD II cats on ALL vehicles, not just those that came equipped with them.
"High-Flow" cats aren't smog legal, only factory cats are. For what it's worth, though, a brand-new OE cat flows every bit as well as a supposed "high flow" cat.
did u do the high flows with 2 stock cats?[
yeah thats what i'm running but I guess its going todepend on the exhaust the your running too, That reason why I did this was cuz I busted one of the second cats damn speed bumps
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