flowmaster to hooker catback DYNO results
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 Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Enthusiast
Joined: Dec 2004
Posts: 588
Likes: 1
From: Palm Harbor,Tampa
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
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.
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.
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
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.
