BlueTA99

99' trans am m6 everything stock
im deciding if i should go open headers on a stock exhaust manifold
what are the advantage and disadvantage of it?

nightmare23

iTrader: (5)

y would u want to do this??

gc302047

iTrader: (4)

there would be a loss of power and your o2s would not like it due to fresh air reaching the sensors causing the computer to think it needs more fuel making the car pop and get shitty gas mileage, also loss of back pressure.

TheSilverOne

iTrader: (22)

0 advantages

406malibu

+1 on everything every one has said, not to mention the manifolds dont come down far enough, you would burn the bottom of the car/any thing near the opening.

406malibu

123439347223234252634 disadvantages.

hitmanws6

iTrader: (20)

if you must run open headers get some longtubes and do it

PGUFF

iTrader: (12)

just get a cutout instead

AznMuscle

iTrader: (7)

Long tubes and turn downs sounds nasty.

Or this. Not as loud, but will sound better.

samson_420

iTrader: (1)

Where would you come up with the idea to do this, really? ? ?

nightmare23

iTrader: (5)

i think some long tubes x pipe going into two bullets and turndown will sound good

bigtls1

iTrader: (7)

i would get a cut out. can have it quiet or loud whenever you want

hotjohnnyls1

+1 For the Cutout

OMGWTFBODY

iTrader: (5)

Just run it WOT without manifolds. Is that the kind of noise you want?

nmass399

take your y-pipe off and tie up you single pipe going back to the muffler(take just the y-pipe off-that means leave the cats on), i ran mine like this for a while and picked up a little bit of power, loud but not too loud, to loud to run throught the city tho.

shaolink9

will def sound like **** ... i thought open stock y sounded shitty and so did straight pie to me its a loud unrefined sound "to me "

78novacaine

iTrader: (2)

i would have to agree with this statement

<---TSP true dual owner and lover

78novacaine

iTrader: (2)

but if you are not looking to spend any money right now, i could definitely recommend taking off the stock catback and leaving the stock Y pipe in place, the cats will quiet it down enough to make it liveable, and you will see noticeable gains. i went from 13.5's @ 105 with the stock exhaust to 12.9's @ 108 with the catback removed and a lid added, and made 320 HP and 334 Tq the following day, untuned, with a ls1 intake....oh yeah, and 110,000 miles

nmass399

yeah headers, x-pipe with bullets and turndowns would definately sound good. Mine is running through longtubes kooks y-pipe(dual cutouts) and got the stock cme on there so i can have it loud as it gets or as quiet as it gets when i want it. Puts a smile on my face opened or closed lol

RE AND CHERYL

iTrader: (31)

Sorry, gotta raise the bullshit flag there. Anyone here can tell you there is NO way your gonna pich up 6/10s by removing the catback and installing a lid. Most likely was due to weather change or just better driving.

Re'