Flowmaster delta's

[txpkup]

Anyone who has flowmasters ever find a loss of power from it? I would think not because of the name alone! But I don't know much about exhaust and two years ago just wanted it LOUD so I had Torpedo put on. The guy was my dad's friend and I just wanted the loudest street leagal with dual pipes. (sounds great by the way. just like an old boat). So he put it on, and I noticed a loss in power, when my foot was completely on the floor. Recently I've been looking at flowmaster delta's. Does anyone have this? Or any kind of flows? Ever have a loss in pwr? Are you happy about it for the most part?

 

thanks for the input

[99GoldSilverado]

I have the Flowmaster American Thunder cat back system - single in, dual out. Increased power and torque. Sounds great too.

[99Silver6.0]

Flows are not a good muff to run if you want power. Low end with my 40's sucked arse!! They just do not flow that well. I dumped it for a Borla cat-back and regained my low end. I just put a Borla XR-1 sportsman on cause the cat-back wasnt loud enough. Needless to say Im happy now. If I were you I would maybe look into Magnaflow. Their cat-backs will net you more power.

 

Thats my 2 cents.

 

Here are some tests of several mufflers. The results in HP order:

1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq

2.Bassani Real Street 373.7 hp/ 333.8 tq

3.Hooker Maxflow 373.5 hp/ 333 tq

4.Borla XS 373.3 hp/ 332.6 tq

5.Magnaflow 372.8 / 332.5 tq

6.MAC 372.3 hp / 331.5 tq

7.Flowtech Afterburner 372.3 hp/ 330.1 tq

8.Hooker Aerochamber 372.1 hp/ 330.4 tq

9.Bassani 372 hp/ 333.5 tq

10.Spintech 371.6 hp/ 332.2 tq

11.Edelbrock Performer RPM 370.9 hp / 331.3 tq

12.Borla XR1 370 hp/ 334 tq

13.Flowtech Terminator 369.5 hp / 331.3 tq

14.Dynomax Ultra Flo 369.4 / 333.2 tq

15.Flowmaster 369.4 hp / 331.8 tq

16.Flowtech Warlock 366.3 hp / 325.3 tq

17.No muffs 365.2 hp / 330.1 tq

 

Sound Off in Quietest to Loudest (Decibels):

 

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.

2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.

3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.

4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.

5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.

6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.

7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.

8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.

9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.

10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).

11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.

12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.

13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.

14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.

15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.

16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

 

Some flow tests:

2 “ Straight Pipe 283 CFM

2 ¼ “ Straight Pipe 365 CFM

2 ½ “ Straight Pipe 521 CFM

 

2 ¼” Typical Bent tailpipe 268 CFM

2 ½” Typical Bent Tailpipe 417 CFM

 

2 ¼” Inlet/Outlet- Glass Pack Tips- No Louvers- Smooth 274 CFM

2 ¼” Inlet/Outlet- Glass Pack Tips-Louvered 133 CFM

2 ¼” Cherry Bomb 239 CFM

2 ½” Cherry Bomb 294 CFM

 

2 ½” Inlet/Outlet Dynomax Super Turbo 278 CFM

2 ½” Inlet/Outlet Ultraflow Bullet 512 CFM

2 ½” Inlet/Outlet Gibson Superflow 267 CFM

2 ½” Inlet/Outlet Flowmaster ( 2 Chamber) 249 CFM

2 ½” Inlet Outlet Flowmaster ( 3 Chamber) 229 CFM

2 ¼” Inlet/Outlet Thrush CVX 260 CFM

2 ½” Inlet/Outlet Maremount Cherry Bomb 298 CFM

2 ½” Inlet/Outlet Hooker Aero Chamber 324 CFM

2 ½” Inlet/Outlet Hooker Max Flow 521 CFM

2 ½” Inlet/Outlet Borla Turbo 373 CFM

2 1/2" Inlet/Outlet Magnaflow 284 CFM

 

Standard OEM 2 ¼” Inlet/Outlet 138-152 CFM

Standard OEM 2 ½” Inlet/Outlet 161-197 CFM

[Cool Zr2]

I have the Flowmaster American Thunder cat back system - single in, dual out. Increased power and torque. Sounds great too.

It is in your head

[piratebaseball]

I got the muscle truck exhaust coming from flowmaster so once I get it on I'll give you mpg and et time info on if it made a difference or now.

[99GoldSilverado]

I have the Flowmaster American Thunder cat back system - single in, dual out.  Increased power and torque.  Sounds great too. 

It is in your head

 

I don't usually reply to people that post stupid comments in these forums. But in this case I just have to say to Cool Zr2 -

HOW IN THE F~<K WOULD YOU KNOW ?

I was stating MY opinion based on MY experience with MY truck....before and after installing the exhaust system.

If you have something constructive to say, go for it. Otherwise STFU.

[99Silver6.0]

Ill vouch for the supposed "power increase" of my Flows...... I gained a whole 2.8 HP with them. I got a solid 11HP with my Borla setup.

[Cool Zr2]

I have the Flowmaster American Thunder cat back system - single in, dual out.  Increased power and torque.  Sounds great too.  

It is in your head

 

I don't usually reply to people that post stupid comments in these forums. But in this case I just have to say to Cool Zr2 -

HOW IN THE F~<K WOULD YOU KNOW ?

I was stating MY opinion based on MY experience with MY truck....before and after installing the exhaust system.

If you have something constructive to say, go for it. Otherwise STFU.

Yep, stupid ole me, I don't know nothin, Do you have dyno sheets to varify your increase? Come on lets see em', So untill then, it is in your head.

[Wingnut]

 

Easy guys.

[99GoldSilverado]

(Cool Zr2 @ Jun 14 2004, 07:59 PM)

Yep, stupid ole me, I don't know nothin, Do you have dyno sheets to varify your increase? Come on lets see em', So untill then, it is in your head. 

 

As I previously stated:

I was stating MY opinion based on MY experience with MY truck....before and after installing the exhaust system.

 

What part of that statement don't you understand ?

The key words are "MY OPINION".

 

End of discussion as far as I'm concerned. Have a beer on me.

[99Silver6.0]

Chokemasters arent worth the time or money... In my opinion....

[rhilton]

what about gibson? Not the headers, just the catbacks.

[99Silver6.0]

what about gibson? Not the headers, just the catbacks.

Gibsons cat-backs arent bad. But they werent as loud as what I had wanted.

[anealysr]

I got a Flowmaster 50 series duel in/duel out. I'm not sure if I got more power but I didn't lose any and upped the gas mileage by 1.5 mpg

[Rookie]

you all are funny. as stated early in the post i lost my low end. Question why do you lose low end........ answer no back or reduced back pressure. Now lets look at the name Flow master. i would have to say they flow Better. thus reducing back pressure. in turn no or reduced power out of the hole. just my opinion. but every body is a ace tech.