Thrush or Flowmaster

guitarpro1992 · June 23rd, 2011, 11:01 AM

hey guys, so im finally getting the exhaust done this weekend and ill have videos up soon ! i got 2 flowmaster 40 mufflers 2.5 in and out, with 2.5 in to 3.5 out summit racing tips that look killer. Im just torn on the pipe size, ive been reading that keeping the stock 2.25 will help with back pressure but alot of guys run 2.50. if i run 2.25 can they still fabricate it all together even if the mufflers and tips are 2.5? what are your opinions on this??
Thanks!

Mr. Red Pony · June 23rd, 2011, 11:30 AM

Run 2.5. It will be fine.

Green_6er · June 23rd, 2011, 09:32 PM

get flows, and it doesn't really matter what size piping you get. 2.5 will be good though.

Jetflo · June 23rd, 2011, 11:26 PM

Originally Posted by scoutsout

Damn man I feel like a retard, I have Mac LT Headers divorded 2.5" piping, to Flow 40's out the back. That was the point to my post and I left the most important stuff out. lol.

I thought the flowmasters were too loud when I had a similar setup to what you describe. I've switched to magnaflow mufflers and they are much quieter.

guitarpro1992 · June 24th, 2011, 01:39 PM

i thought going from the stock 2.25 to 2.5 that you will lose back pressure and torque? is it really noticeable? i dont wont to loose too much of the little torque these cars have lol i mean if i wanted to run 2.25 could they put it all together even though the flows are 2.5? can they shrink the ends a little?

June 23rd, 2011, 11:30 AM	#22
Mr. Red Pony Resident badass 01 Built V6 (3.9) 13.91 @ 99.1 N/A Join Date: Jan 2010 Location: Lawton, Oklahomo Posts: 6,789 iTrader: 10 reviews	Run 2.5. It will be fine. __________________ 271rwhp N/A V6 The Name is Danny. I'm a GM Technician. Suck it.

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June 23rd, 2011, 11:01 AM	#21
guitarpro1992 Newbie Join Date: Jul 2010 Posts: 44 iTrader: 0 reviews	hey guys, so im finally getting the exhaust done this weekend and ill have videos up soon ! i got 2 flowmaster 40 mufflers 2.5 in and out, with 2.5 in to 3.5 out summit racing tips that look killer. Im just torn on the pipe size, ive been reading that keeping the stock 2.25 will help with back pressure but alot of guys run 2.50. if i run 2.25 can they still fabricate it all together even if the mufflers and tips are 2.5? what are your opinions on this?? Thanks!

June 23rd, 2011, 09:32 PM	#23
Green_6er Hardcore Enthusiast 2000 Mustang 3.8 ehh w/e the mostly stock time is Join Date: Jun 2011 Location: Hickory, NC Posts: 2,757 iTrader: 0 reviews	get flows, and it doesn't really matter what size piping you get. 2.5 will be good though.

June 24th, 2011, 01:39 PM	#25
guitarpro1992 Newbie Join Date: Jul 2010 Posts: 44 iTrader: 0 reviews	i thought going from the stock 2.25 to 2.5 that you will lose back pressure and torque? is it really noticeable? i dont wont to loose too much of the little torque these cars have lol i mean if i wanted to run 2.25 could they put it all together even though the flows are 2.5? can they shrink the ends a little?

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