chevy0128

i have a flowmasters catback and i am going to be installing Pacesetters LT and ORY ..is this going to sound raspy or not so much?

ScrapinBye

It sounds BADASS! I Have that exact setup on my camaro. It has that deep, hollow rumble at idle. Watch out, because everybody is going to say that the flowmaster CB is going to cost u power. Most people's claims on the Flowmaster CB's Hp loss is greatly exaggerated, so keep that in mind. I did, however just buy an electric cutout so I can still enjoy that crazy Nascar WOT sound and get whatever ponies back the Flowmaster is "supposedly" costing me!

TheSilverOne

iTrader: (22)

the loss of hp with the flowmaster catback has been proven with dyno sheets on here.

ScrapinBye

^ Lol! The dreaded hot ***** syndrome! That HBS can be a muthafuka in a sweaty ball environment (SBE) I tell you!

Titanws6

iTrader: (35)

Same set-up here too, yeah, its a little raspy. This and the lost HP as stated by others has caused me to cut the crap off and now am installing a magnaflow cat-back I picked up from a fellow member. From what I hear this combo at WOT will be very very nice!

BES Stroked Nova

iTrader: (24)

just put in a cutout, it will sound badass!!

waterbug1999

iTrader: (3)

Some guys add a bullet muffler in teh "I" pipe, that helps.

Me, I just bought a 4K stall so I dont see the lower RPM's that casue the raspy sound.

chevy0128

well **** i really dont have the money to rredo my catback and how much hp is it "costing"me jsut a couple ?? Also scrapinbye how do you like those pacesetters ...ill prob just keep the ccatback n get an ecutout when i get a litle cash

Super28Sport

it will be quite a bit raspy but it still will sound bad ***.

RevGTO

iTrader: (12)

A buddy has that set up and it is not raspy. Suprisingly. I tried all kinds of combinations to get rid of rasp on mine with both GMMG and Hooker. He bolted his up and it has been fine from the get-go.

chevy0128

hmm its like half and half here... i meen i can handle a little rasp but im j ust hoping it will get deap and no tooraspy

1fastz

iTrader: (16)

it seems as though any off road y pipe system is going to have rasp, some more than others. Thats when i decided to go with the magnaflow x-pipe setup (custom). But now im going back to the Y-pipe setup (required for sts setup)

RooRnZ28

iTrader: (14)

its going to be loud!!

chevy0128

loud is good

waterbug1999

iTrader: (3)

Just came across this.. Read the TSP post about flowmaster and a cutout. (2nd post)

https://ls1tech.com/forums/dynamometer-results-comparisons/855452-updated-results.html

BigKap94z

iTrader: (47)

Wow, check the link Waterbug has posted and do a search and you will find the same results over and over again. I have seen a 15rwhp loss at the bolt on level through the flowmaster catback. Apparently instead of helping people you would rather claim proven results are bogus and have people make the same mistake you did...

The Flowmaster catback sounds pretty good actually, its just too bad it isn't a performance part. I really don't think it flows any better then the stock catback based on the dyno results I have seen. If you already used it, then by all means run it....but realize it is costing you power. Personally I would sell it for a couple reasons. First, you can run a cutout....but they are so intolerably loud(IMHO), and don't sound that good. 2nd, why even switch to LT headers when you have a huge bottleneck exhaust downstream...

If it was my car, I would sell the Flowmaster and use the money I got from it with the money you were gonna spend on an Electric cutout and just get a better flowing catback that sounds good and Flows very well. Hooker or Magnaflow get my vote.

Vrbas

iTrader: (2)

When i had my flowmaster w/ my Pacesetter ORY setup i didn't hear any rasp it all.

Swapped to a Spintech Muffler and now i've got more of a rattle coming from the passenger side exhaust tip (only b/t 2200 and 2700 RPMs)... buggin' the crap out of me. I know it's not rasp.

Red99TA

iTrader: (11)

We all know it robs power but that's what cutouts are for! If you don't want to spend another $400 on a good flowing catback then keep the blowmaster and throw a cutout before the muffler for those times you need every last horsepower.

smg267

iTrader: (23)

It's the 80 series flowmaster that sucks not the 40 series! There is a huge difference. Most of the guys claiming 30 h.p. have alot more than boltons.

BigKap94z

iTrader: (47)

Actually the 40 series flowmasters don't flow well at all for a full size muffler. Do a search and you will find flow comparisons, and find that they aren't that good. The single chambers and outlaw mufflers flow pretty well I guess but the other stuff not so much. A few years back when flowmasters were all the rage(more so then now) people were running them with the ID/OD as much as an inch larger then the exhaust pipe and reduced down to fit for better performance.