Question bout rear cats and stright pipe

[BEAST 150 4X4]

Ok ok ive been asking about headers and different exhaust for alittle but im thinking about getting rid of the rear cats and maybe running pipes back from there with no muffler. With this im hoping to get louder then what i am know which is just no mufffler. If i do this do i need to do an "X" or "Y" or whatever you wanna call it or would just straight back be ok

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[f150fella08]

Originally Posted by BEAST 150 4X4

Ok ok ive been asking about headers and different exhaust for alittle but im thinking about getting rid of the rear cats and maybe running pipes back from there with no muffler. With this im hoping to get louder then what i am know which is just no mufffler. If i do this do i need to do an "X" or "Y" or whatever you wanna call it or would just straight back be ok

i wouldnt run JUST pre cats, either get rid of the pre cats and leave the rear converters OR get some high flows

i ran hi flows and no mufflers with a H pipe and it sounded great (to me), the links in my sig if ya wanna check it out.

i dont know if youve seen "fordtruckin" videos hes got a 5.4 hi flow cats, no mufflers and made a video before and after X pipe. it was a little louder and more crackly WITHOUT the x pipe.

[f150fella08]

i forgot to add, you will more than likely get a engine light if you run JUST precats.

i remember joshmac4.6 from a while back ran pre's only and got a CEL....what ever happened to that guy

[DarrenWS6]

People come & go.

Anyways you will definitely get a CEL without the rears, you'll just simply need the Gotts O2 mod to solve it, or if your Superchips tuner can turn it off then that.

It will be very sound, raspy, & crackly with no muffler & deleted rears, so be ready.

[f150fella08]

i didnt care for him to much anyways

yea i had to gotts mod my high flows CEL is still off

[MudTerrain]

Originally Posted by DarrenWS6

Anyways you will definitely get a CEL without the rears, you'll just simply need the Gotts O2 mod to solve it, or if your Superchips tuner can turn it off then that.

I first had a CEL when I deleted the rear cats and replaced them with flex pipe. When replaced the flex pipe with actual straight pipe, my CEL turned off.

I've had zero problems since. MPG is the same as before... I was first running deleted rear cats and straights with no crossover. I now have an H-pipe which has tamed it down a tiny bit. However, little precats and straight pipes --- Very loud!

[BEAST 150 4X4]

Well thanks for clearing it up for me guys. Im thinkning this is something im going to be doing soon