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High flow cat: Before and after

  #1  
Old 02-14-2012, 11:32 AM
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Default High flow cat: Before and after

So i finally got around to making a vid after i got my high flow cat put on. Theres a little bit of a difference, maybe a little louder

Here is my truck with just the 40 series:

97 blazer 40 series muffler - YouTube

Heres my truck with the 40 series and magnaflow high flow cat, i also have a CAI but that doesnt make a big difference IMO:

Blazer High flow cat and 40 series muffler - YouTube

I think i might have an exhaust leak, which you can kinda hear towards the end of the video And the white smoke is because its cold (i hope) But you can also hear that it idles a little better with that PCM tune as well.
 

Last edited by 97cherryblazer; 02-14-2012 at 12:27 PM.
  #2  
Old 02-14-2012, 12:24 PM
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Nice, I love the sound of the 4.3 with the 40 series.
 
  #3  
Old 02-14-2012, 12:59 PM
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Was there something wrong with your previous cat?
 
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Old 02-14-2012, 01:06 PM
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Yeah it was clogged. so i decided it was a good time to upgrade it
 
  #5  
Old 02-20-2012, 03:15 PM
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Yeah i don't think i can justify a hi flo cat without the stock getting clogged even then i may just hollow it out. Even then, i live in California and they aren't hi flo cat friendly at all. So i think a cat back setup will do just fine.
 
  #6  
Old 02-20-2012, 05:19 PM
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Yeah Cali and gutted cats don't mix.. but cat back will be just fine IMO, as you can tell there really isnt that big of a difference. just makes it a little louder.
 
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