I took my cats off this past weekend and I love the way my truck runs now!! I actually think it picked up some low end, I think the cats may had been a little clogged since they had 85k miles on them.... it feels alot quicker on the lowend and I have 20's on!!! I will put on the stockers back on for some street racing this weekend..... and by the way the catless exhaust with the borla sounds real good and it is actually quite on the highway!! I like how it sounds @ WOT.....

 

Yes no cats have a sound all to their own and IMO sound absolutely wicked thats why I dont have any. Get you a cutout and then you will really be loud.

 

Working on just that. The shop wants too much, and my friend is too FN lazy and I got rid of my weldin machine

 

I have heard of alot of people losing a little of the low end but I really think it helped me??? has anyone noticed this???? if I get a cut-out, will that then affect my low end???

 

are you running a strait pipe through or did you bust out the cats and welded them back up. How is the resonanse.

 

straight pipes, the resonance is not bad at all, at 70-80mph you can barely hear it.... I really like the results performance wise and resonance wise...

 

Thinking of doing this also. Did you get any check engine light? If so how do you get around that

 

i got my rear O2's deleted when I did my pcm tune since I was planning on taking them off soon...

 

*** NATIONALSPELLING BEE CHAMPION***
thats awesome desTRUCKtive I cant spell or type well either.
If you dont have a tune you can get o2 sims but I would just get a custom tune for the performance and not having to mess with the sims sometimes they can be PITA to get them to work right. Wait4per has a nice deal on tunes and the sims themselves will run you about 60 bucks anyway. Tehe performnce gain from deleting the cats is well worth it IMO.

 

desTRUCKtive is a tuning guru! JK. Oh yeah, my SES light is on.......

See this thread if you want to talk about clogged cats.
https://www.performancetrucks.net/fo...d.php?t=344614


I just welded the hollow cats back up, so I can pass the visual inspection in September, but after that, I'm going with straight piped. The resonance is right below my feet and its using the cab to amplify it, like a guitar body.

As for the power, no comparison, but that's because my truck was barely running.