Join Date: Aug 2012
Location: Northern Michigan
Thanked 23 Times in 13 Posts
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Getting rid of the cats isn't about HP gains as i know that the current cats flow very very well. It's about noise level. The cats remove a few Decibels for the exhaust note and I like my cars to sound loud. My Ideal setup would be like my other cars and truck, long tube headers no cats and twin AtAt 2.5 Aero Turbine mufflers straight out to 5" tips. However I feel this would kill my warranty, so i am gonna hold off for a while
Mine without cats was fine at hwy speeds and was noticeably louder around town, sounded pretty good. You would probably like it I am guessing. But, in the morning at 7 am it would wake the dead so I had to keep the garage door down and start it, it was frickin loud. I had to wait a few for it to idle down some, open the door and scoot out of the subdivision knowing I woke a few people up. Probably would be the biggest bang for the buck to do with the mini-cats from Bigdaddys and leave the nice, factory exhaust system intact. Long tube headers would be of no use as far as sound if going catless, and they don't produce any power gains on a stocker or even some 9 sec cars like Lindas, so save your money there..
No PCM changes needed, the PCM would never know the difference with the mini cats in there I suspect. No service engine lights came on. If you like the catless sound, you might like the LMI intake as well. The supercharger whine can be intoxicating but i am over it personally.
2009 SRT 426 N/A Automatic, CA, headers, Corsa exhaust, 8.8 with a 3.08, 90mm TB, More.
11.64 @ 119 on the motor with drag radials.
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