flowmaster to hooker catback DYNO results
05-16-2005, 11:46 PM
#1
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flowmaster to hooker catback DYNO results Well i had to get rid of the ol blowmaster cause i just couldnt stand the sound of it anymore, the rasp was about to drive me insane 
. With the mods in my sig i made 374 rwhp and 366 rwtq through the flowmaster. The flowmaster catback had a cutout in it and with it opened it made 399 rwhp and 390 rwtq. I installed the Hooker catback, very nice fit for the price, Its just as loud if not as loud as the flowmaster but is deeper and barley has a hint of rasp to it. Night and day sound difference over the blowmaster. Well back on the dyno she made 392 rwhp and 378 rwtq 
I have yet to install a new cutout in the hooker. All of these numbers a untuned. Hopefully this week i can get her tuned. Overall flowmaster to Hooker 18 rwhp gian and 12 rwtq 
. With the mods in my sig i made 374 rwhp and 366 rwtq through the flowmaster. The flowmaster catback had a cutout in it and with it opened it made 399 rwhp and 390 rwtq. I installed the Hooker catback, very nice fit for the price, Its just as loud if not as loud as the flowmaster but is deeper and barley has a hint of rasp to it. Night and day sound difference over the blowmaster. Well back on the dyno she made 392 rwhp and 378 rwtq I have yet to install a new cutout in the hooker. All of these numbers a untuned. Hopefully this week i can get her tuned. Overall flowmaster to Hooker 18 rwhp gian and 12 rwtq 
05-17-2005, 01:53 AM
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What the flowmaster just a weld up muffler, or repiped. That will make a huge difference. The only flowmasters i like on f bodies are the 10 series one chambered. Great to see the difference.
05-17-2005, 08:11 AM
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My car is stock, and I bought it with a flowmaster muffler on it. I put the Hooker cat back on and my butt dyno thought it felt a difference. I'm glad to see some prove it right.
05-17-2005, 04:04 PM
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When I bought my car I had a flowmaster muffler on it. It sounds good for stock with cats, but soon as I redid my exhaust I lost it for a Hooker. Welcome to the club. 
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05-17-2005, 07:49 PM
#10
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Originally Posted by BBQLS1
My car is stock, and I bought it with a flowmaster muffler on it. I put the Hooker cat back on and my butt dyno thought it felt a difference. I'm glad to see some prove it right.
Butt Dyno , Classic
05-18-2005, 02:59 PM
#17
Maybe it is also time for me to change mine over.
I have pacestters lt headers with TSP y-pipe with hi-flow cats and I just went with a 40 series flowmaster muffler. So the pipe from the y-pipe to the muffler is still stock. Since it is a single in and single out I had them add a pipe in front of the muffler before it enter's the muffler and had them cut out a 1 1/4 inch hole with a tail pipe added. Same as borla does with there's.
Do you think I should rip it all of and go with a complete cat back and if so which one.
Also I have all the bolt on's with a 224/224 cam 3,200 stall with 342 gears.
I have pacestters lt headers with TSP y-pipe with hi-flow cats and I just went with a 40 series flowmaster muffler. So the pipe from the y-pipe to the muffler is still stock. Since it is a single in and single out I had them add a pipe in front of the muffler before it enter's the muffler and had them cut out a 1 1/4 inch hole with a tail pipe added. Same as borla does with there's.
Do you think I should rip it all of and go with a complete cat back and if so which one.
Also I have all the bolt on's with a 224/224 cam 3,200 stall with 342 gears.
05-18-2005, 03:46 PM
#19
Originally Posted by Z-286speed
I would look into a new cat back for sure, stock piping hurts you in the long run. Look into a hooker cat back or go true duals.
05-18-2005, 03:54 PM
#20
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Originally Posted by 1 BLOWN V8
Does true duals add the most performace? Also which one's did you go with? I have the same headers as you. I also have the TSP y-pipe with hi-flo cats.
