SOM98TA

iTrader: (1)

alright.. well I was running an Open Y pipe and the car felt LOADS faster then with the stock catback..


well I went on vacation and I got surprised with a flowmaster catback... needless to say I was


I HATE FLOWMASTER it sounds okay at idle but at WOT it sounds like a stock muffler... not to mention the car feels LOADS slower .. like its almost hurting it revving to 6k.. I can actually sit and wait between shifts and look at the tach.. its painful..



then I came across this wonderful catback called TSP Rumbler.. its purchased..

should it feel like my car did with the Open Y? about the same loudwise and power wise? BTW I have cats but not for long


I was thinking a solid 10rwhp.. and a beautiful sound..


btw mods are as follows..


FRA
whisper lid
TB bypass
tsp rumbler.

00Z28 Camaro

its plausible

00 Trans Ram

iTrader: (5)

Yeah, you'll notice a difference. I bought my car used, and it had a Slowmaster on it. I dynoed it and it put out 302rwhp (Mustang dyno). Then, I cut off the whole exhaust rearward of the y-pipe and redid the dyno. I got 322!

Now, I've heard that the average gain from getting rid of the stocker is 10hp. So, that means that the Slowmaster lost me the other 10.

BuBbABFP

iTrader: (3)

When i was running my car on stock exhaust.. it felt like ****.. but then i got my TSP Rumbler and it felt wayy better!

bolton98TA

iTrader: (3)

i got rumbler and it made a hell of a difference. im soon to order LT's and catted Y, i hope i can tell a difference their. btw, the rumbler doesnt sound all that good at idel (loud) but it sounds great at lower rpm's and at WOT it sounds badass. u wont be dissapointed!

Hardtop00SS

iTrader: (17)

yea I think you will DEFINITELY feel a difference with the TSP rumbler opposed to the blowmaster. I mean the rumbler has a bullet as a muffler, THATS IT! The flowmaster has all those delta baffle bull **** and that is choking your car, drop the flowmaster and get the rumbler!!

luvmeZ28

iTrader: (3)

i felt a pretty good difference with mine. it wont quite be like running open exhaust, but it is just a straight through flow with the bullet muffler, plus the catback was made so the muffler runs parallel with the car, not sideways like most others. that straight through flow has to help performance.


oh, and its very loud with headers.

SOM98TA

iTrader: (1)

BTW getting a custom Y pipe set up.. catless..


hoping for a solid 20rwhp now

transam69230

iTrader: (49)

just do the true dual, with 02 sims you won't be dissappointed. If hp is what you are looking for.

vodas00ss

iTrader: (14)

When i bought my ss, it had a master cat back on it . To me it sounds pretty good, but i think it definatly looses some power, from driving other cars with exhaust. Im fixin to trash that thing, and go with a true dual system.

Schantin

iTrader: (6)

Claiming the Flowmaster crossflow might not flow as well as a Borla, GMMG, etc is true and believable. Saying it kills 10HP over stock is pure

I'd like to know how many people on the Flowmaster bashing bandwagon have ever had one (or heard one) as well as the Magnaflow or Borla. Benchracing on the internet is not a source of claiming to be an expert.

A friend of mine has a Magnaflow with the same LTs and other bolt-ons I have, save he also has a FAST intake and 90mm throttle body to my stock LS6 intake. He's also using stock rims where I'm running heavy 18x9.5" Long story short, our cars perform perform about the same at the track (within a.1-.2 seconds in the 1/4 mile), despite his Magnaflow vs my "Blowmaster". Both our cars are 02 model 6 speeds.

The Flowmaster might give a couple HP less then some other cat-backs, but it certainly isn't worse than stock. I picked up .2sec in the 1/4 going from stock to the 3" American Thunder catback. At least put out truthful info when bashing something

Schantin
2002 Camaro Z28 M6

addicted2fun

I gained 12 hp from flowmaster to magnaflow, nuff said.

CGriff04

iTrader: (1)

TSP all the way man!! Love mine

ScrapinBye

I just had my car dynoed (I'll post the sheet soon) and the Flowmaster CB I have wasnt costing me but 8 rwhp vs. my open cutout. That's not bad. Most people w/ a Magnaflow or Hooker still gain a few W/ an open cutout, so I guess the ol' Flow wasnt holding that much back at all compared to other exhaust setups...

BigKap94z

iTrader: (47)

How much HP/TQ are u making through the catback/cutout. 8rwhp at the bolt on level is not a good flowing exhaust. FWIW I have seen similar results through the stock catback vs. cutout on bolt on cars. At the bolt on level, my cutout open yielded virtually the same numbers as through the Hooker catback.

To the OP, the post I quoted should give u the answer your looking for. He lost 8rwhp through the flowmaster, the TSP rumbler should be almost as effective as an open cutout.

ScrapinBye

Here's my sheet. The blue is with the cutout open, the red is through the Flowmaster CB, and the green is a baseline pull before the dyno tuning with the cutout closed.

BigKap94z

iTrader: (47)

If U don't mind me asking what is your setup? 8rwhp loss at/around 400rwhp level isn't horrible. FWIW I have seen LT1 setups lose 8-10 around the 300rwhp mark with the 80 series mufflers.

ScrapinBye

I have Pacesetter LTs, ORY, Flowmaster CB, Raceready E-cutout, MS3 cam, PRC valvesprings, chromoly pushrods, and a good tune. Your making all that power with stock heads?

BigKap94z

iTrader: (47)

Yes sir!

ScrapinBye

What are the specs of that BRE cam ur running? Those numbers are unbelievable if there were on a dynojet. --Justin