considered dumps off the headers....opinios??

Old 09-27-2011, 10:17 AM
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Default considered dumps off the headers....opinios??

ok so ive considered running a bullet off each LT and having the dumps kicked out to the sides. maybe add a litttle pipe off the headers then put the bullets on. or a true dual setup... but i like cheap and effective lol

right now i run a Y into a single dumped bullet. But imo the car is to damn quite and i really dont like it. i do daily the car.

would i lose power or tq in swapping over to the dumped long tubes?

few people had said no dont do it cause of back pressure loss. but i've read that billion page long debate about that

heres how it sounds with the current setup
http://imageshack.us/clip/my-videos/651/ux6.mp4/
Old 09-27-2011, 10:40 AM
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Im on manifolds but have the y dumped into a 18" dynomax bullet.. sounds decent but not loud enough imo. I was thinking about doing what you want to do but havent found a vid of it to make me decide. My guess is it would sound awesome.
Old 09-27-2011, 10:44 AM
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Originally Posted by ANTICOP RAM AIR
Im on manifolds but have the y dumped into a 18" dynomax bullet.. sounds decent but not loud enough imo. I was thinking about doing what you want to do but havent found a vid of it to make me decide. My guess is it would sound awesome.
thats exactly the boat im in.... i know it would be loud as all hell but ehh whatever
Old 09-27-2011, 10:50 AM
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Had mufflers welded straight to the headers on my 80 trans am, plenty loud and had a very deep tone.
Old 09-27-2011, 10:57 AM
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Originally Posted by retardedpenguin
Had mufflers welded straight to the headers on my 80 trans am, plenty loud and had a very deep tone.
sound clip???
Old 09-27-2011, 11:02 AM
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I had a trans am with that setup about 5 years ago and didn't like it at all. I would say spending 300ish for an xpipe setup would be worth it. I had the ypipe on my current car and it was to quiet as well. You could sell your setup for 150ish and use that plus another 150 for a true dual setup.
Old 09-27-2011, 11:03 AM
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It's posted some where here in tech that it kills the low end but helps a lot on the top end.

From what I heard the people that do it switch back very quick..

As for the back pressure loss ... might want to keep that down I can't tell you how many people will come into the post and try to school you on this topic ...
Old 09-27-2011, 11:06 AM
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Originally Posted by SSHAWK
It's posted some where here in tech that it kills the low end but helps a lot on the top end.

From what I heard the people that do it switch back very quick..

As for the back pressure loss ... might want to keep that down I can't tell you how many people will come into the post and try to school you on this topic ...
lmao yeah that back pressure is a touchy subject.

may even try to get a x closer to the front of the car and just dumping the mufflers off the x
Old 09-27-2011, 11:21 AM
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Originally Posted by Dave_the_SS
lmao yeah that back pressure is a touchy subject.

may even try to get a x closer to the front of the car and just dumping the mufflers off the x

I have the X pipe with my 3"in duals set up.

I paid right at $230 for everything with labor from a local muffler shop.

I have Bullet mufflers.
Old 09-27-2011, 11:33 AM
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Originally Posted by SSHAWK
I have the X pipe with my 3"in duals set up.

I paid right at $230 for everything with labor from a local muffler shop.

I have Bullet mufflers.
yeah i'd like to get a true dual setup but the middle of funding a build and didnt budget for a new exhaust
Old 09-27-2011, 11:34 AM
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Davelita, just run no headers.
Old 09-27-2011, 11:35 AM
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if you do go that route, you'll want at least 6in or more of straight pipe off the headers. reasoning being your O2's will freak out and start dumping fuel b/c of the air coming up from behind it.

for a n/a setup you could argue that a y-pipe (or even better an x-pipe) setup is more ideal b/c you are creating a scavenging effect. it draws the air out of the exhaust faster. which is another reason why n/a motors like a lot of overlap in a cam b/c as the intake valve is opening the exhaust valve hasn't closed yet and the exhaust valve helps pull in air through the intake valve.

which is why turbo cars don’t like a lot of overlap b/c you'd be blowing your boost out the exhaust valve...


but ya'll said you didn’t want to get into that sort of talk
Old 09-27-2011, 11:41 AM
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i found a thread but all the guys video links dont work any more
Old 09-27-2011, 11:43 AM
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Originally Posted by TINKRD
if you do go that route, you'll want at least 6in or more of straight pipe off the headers. reasoning being your O2's will freak out and start dumping fuel b/c of the air coming up from behind it.

for a n/a setup you could argue that a y-pipe (or even better an x-pipe) setup is more ideal b/c you are creating a scavenging effect. it draws the air out of the exhaust faster. which is another reason why n/a motors like a lot of overlap in a cam b/c as the intake valve is opening the exhaust valve hasn't closed yet and the exhaust valve helps pull in air through the intake valve.

which is why turbo cars don’t like a lot of overlap b/c you'd be blowing your boost out the exhaust valve...


but ya'll said you didn’t want to get into that sort of talk
lol my car is on dope. or well will be with an MS3 cam
Old 09-27-2011, 11:44 AM
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Originally Posted by Dave_the_SS
lol my car is on dope. or well will be with an MS3 cam
MS3 is a good cam and will injest 300 worth of bottle

with it being on nitrous, nothing wrong with running off the headers. just be prepared to be gassed out from the fumes.
Old 09-27-2011, 11:47 AM
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I'd say dump it before axle or out the back...

It would sound retarded loud imo...
Old 09-27-2011, 12:00 PM
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well right now with the y its dumped about halfway back in the middle of the car
Old 09-27-2011, 12:02 PM
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Originally Posted by TINKRD
MS3 is a good cam and will injest 300 worth of bottle

with it being on nitrous, nothing wrong with running off the headers. just be prepared to be gassed out from the fumes.
thats why i was thinking of running a section of pipe to maybe get it back to where the dumps would be abut midway..... say halfway point of the door on each side
Old 09-27-2011, 12:07 PM
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Dumps off the headers are for race cars. Run it back to the axle with a single bullet or duals dumped, 3 inch will be loud enough, if you do not have headers, maybe not.
Old 09-27-2011, 12:11 PM
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Originally Posted by Dave_the_SS
thats why i was thinking of running a section of pipe to maybe get it back to where the dumps would be abut midway..... say halfway point of the door on each side
if you're running that far back might as well get some duals.

here's some sound references for you...

MS3, Pacesetter LTs, Moroso Spiral Flow Duals
http://www.youtube.com/watch?v=bsLKJZgSspQ

at the track
http://www.youtube.com/watch?v=0724awWcAHw

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