Hollow cat or remove resonator? - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 08-02-2003, 03:50 PM   #21
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Sauk Centre, MN
Posts: 5,458
Thanks: 0
Thanked 0 Times in 0 Posts
OLBlueEyesBonne is on a distinguished road
Default

Well, I went out to my friend/mechanics place to get the cat hollowed AND the resonator removed and when I got there he had just started on his demo derby car for tonight. So needless to say he didn't have time, and there was also a 2002 Chevy truck on the hoist with the rear wheels off so I am still running a stock cat and resonator with 191,xxx miles on them.
OLBlueEyesBonne is offline   Reply With Quote
Old 08-02-2003, 03:52 PM   #22
Senior Member
Expert Gearhead
 
Join Date: Dec 2002
Location: Mississauga, Ontario
Posts: 20,892
Thanks: 0
Thanked 1 Time in 1 Post
Jim W is on a distinguished road
Default

Impressive. The resonating sound when the car warm was more is much more agreeable then the cold start burbles.

I suspect (as we discuessed) the proxmity to Joshs car helps resonate the sound giving it a cleaner sound.

Either way
Jim W is offline   Reply With Quote
Old 08-02-2003, 06:28 PM   #23
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

At warm idle, I'm still no louder than stock. That'* for sure. I've maintained my 'sleeper' off the line sound. After I pass them, it'll be a giveaway, though.
willwren is offline   Reply With Quote
Old 08-02-2003, 09:28 PM   #24
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

Will, my muffler is also a camaro/f-bird muffler...Part #14266 I believe. Should be the 5" x 8" oval.

Yours sounds incredible! Actually just the sound I wanted when I started. Mine sounds just like yours, but not as loud and 'powerful'. Once I get my Hi-flow CAT and get rid of my res I will expect to have the same sound. I can't wait!
bonnie94ssei is offline   Reply With Quote
Old 08-04-2003, 04:57 AM   #25
Member
Posts like a V-Tak
 
Join Date: Jul 2003
Location: Worcester, MA
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
h3llphyre is on a distinguished road
Default

May I suggest, if you are going to hollow out your cat, that you just go ahead and put a piece of straight pipe through the middle of it. If you are only leaving it there to pass the "hey look, the cat is there" test, then put a pipe through it. Personally, on my "other" car, I just put flanges on the exhaust and put an "off road" pipe on. When it goes for inspection, I switch the cat back in.

Either way, the reason for the pipe through it, is that, when you hollow out a cat, you are creating some very odd turbulence issues. This may actually hurt your performance.
h3llphyre is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Hi-Flow cat vs. Resonator delete gcode14_photo Performance, Brainstorming & Tuning 11 01-17-2011 12:07 PM
Resonator? Or No Resonator? oldsintrigue1123 Performance, Brainstorming & Tuning 17 03-09-2007 03:45 PM
Stock Sway Bars are HOLLOW! Xac Xado 2000-2005 2 07-16-2006 03:28 PM
Remove Resonator or Not??? josho66 2000-2005 23 06-08-2005 11:11 PM
Cat Back or Resonator Back ?? Drifter420 Performance, Brainstorming & Tuning 8 04-10-2003 11:19 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:32 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.