Getting rid of the cats....
#11
Originally Posted by 1slow01Z71
Just be easy when you cut them off so you can save them you never know when you might want to put them back on. I ditched my y-pipe with cats when I got my dual exhaust put on then my parents bitched about how loud my exhaust was in the morning so I had to pay 200 bucks for some magnaflow high flow cats. I no longer live with them so needless to say the cats are back off.
I notice a very nice gain up top it seems to bury the speedo alot faster now escpecially with the nitrous. 
I notice a very nice gain up top it seems to bury the speedo alot faster now escpecially with the nitrous. 
nitrous is good.
#13
You should get some noticeable gains without the cats, I never knew the difference because i removed them when installing the headers. You will get a lower-sounding exhaust though, but it's worth it
those borlas are sweeeet...I've only got two O2 sensors, the other two were removed, i was told they weren't necessary...hp-tuning did the rest...
p.s. let me know when you go to the muffler shop to get them removed cuz...
p.s. let me know when you go to the muffler shop to get them removed cuz...
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91LT16SpeedFormula
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Oct 17, 2015 08:01 PM




