stacks vs. straight 4 inch
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Senior User
Joined: Jan 2008
Posts: 322
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From: Simsbury, CT
stacks vs. straight 4 inch
So last night I went to the Tim McGraw/ Jason Aldean concert and realized that I need to make my truck more hoss. There were lots of trucks there with stacks and big smoke and it made me want stacks so badly. So here is my question, right now I have the stock exhaust with a 3.5 in. downpipe. Which do you think is better a 4in. straight pipe, single behind rear wheel exit, exhaust or... 6in. stacks. The criteria are price, look, and performance.
Thanks
Thanks
Tuned
Joined: May 2003
Posts: 454
Likes: 1
From: College Station TX
Stacks are not going to affect your performance. You could spend your money much better with something else. I'm not a fan of stacks anyway. You've limited your buyers if you want to sell it and you've lost space in the bed. Get a tuner or a grill guard.
Posting Guru
Joined: Feb 2008
Posts: 1,526
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From: Grass Valley, CA
HUH???
stacks are a free-flowing exhaust. they will help with performance just the same as a straight pipe or big exhaust of any other kind.
Stacks arent all that cheap, but you could save some by building them yourself, if you're so inclined.
Personally, i love the showy nature of the stacks. miter cut 5"s would be my choice...
stacks are a free-flowing exhaust. they will help with performance just the same as a straight pipe or big exhaust of any other kind.
Stacks arent all that cheap, but you could save some by building them yourself, if you're so inclined.
Personally, i love the showy nature of the stacks. miter cut 5"s would be my choice...
Posting Guru
Joined: Feb 2008
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From: Grass Valley, CA
backpressure is supplied by the turbocharger, and less backpressure post turbo means faster turbo spool-up... therefore more performance...
Tuned
Joined: May 2003
Posts: 454
Likes: 1
From: College Station TX
The cost vs. performance gain is just not there. If you figure what your spending vs. what your getting there are a lot of better options. Stacks are mostly looks. Real value comes from chips, injectors, etc. You've maxed out on performance gains from exhaust upgrades on a truck like that once you get to 4". I do agree with the backpressure issue-it's not an issue.
Posting Guru
Joined: Feb 2008
Posts: 1,526
Likes: 1
From: Grass Valley, CA
The cost vs. performance gain is just not there. If you figure what your spending vs. what your getting there are a lot of better options. Stacks are mostly looks. Real value comes from chips, injectors, etc. You've maxed out on performance gains from exhaust upgrades on a truck like that once you get to 4". I do agree with the backpressure issue-it's not an issue.
Stacks really are for the showy type.
I should also mention that i wouldnt do stacks without a lift.
5" exhaust might do a little better than 4", but you really wouldnt see it until you're kickin out alot more exhaust... (like 40 lbs boost and stage 2's...)
Most exhaust vendors would tell you that 5" is unneccessary until after 450HP...
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Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
What ever you decide, be sure to get rid of the stock DP. It's a very restrictive POS. You will love the sound and your engine will thank you for the lower EGT's. There is no real performance gain......but it will allow you to add some power later on down the road.
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Posting Guru
Joined: Feb 2008
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From: Grass Valley, CA
I think he's saying he has the DP already...
Posting Guru
Joined: Sep 2004
Posts: 1,096
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From: Ohio
WHAT????? Think your just a little backwards there. First off, no tuner in the world is going to make so much more power that youll lose performance DUE to backpressure being too high in a 4inch exhaust. Unless you have 3s or hybrids, you dont need anything more than 4 inch. Its just a matter of what you like the look of, somewhat stock (my prefrence) or stacks. 4 inch here at our tuffy can be installed in about 6 hours, at a price of about 450 bucks and a 6 pack. Thats no muffler or kitty though, JUST THE WAY I LIKE IT....LOL
Posting Guru
Joined: Feb 2008
Posts: 1,526
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From: Grass Valley, CA
X2!
4 inch is plenty!
I would look into five inch when im looking into 2's.
im doing a five inch Straight pipe, but just for that sound! may build up to it, i havent decided yet.
4 inch is plenty!
I would look into five inch when im looking into 2's.
im doing a five inch Straight pipe, but just for that sound! may build up to it, i havent decided yet.
Lead Driver
Joined: May 2000
Posts: 9,236
Likes: 12
From: Senoia, GA
that's true, the cost is quite a bit more for the same benefit (basically)
Stacks really are for the showy type.
I should also mention that i wouldnt do stacks without a lift.
5" exhaust might do a little better than 4", but you really wouldnt see it until you're kickin out alot more exhaust... (like 40 lbs boost and stage 2's...)
Most exhaust vendors would tell you that 5" is unneccessary until after 450HP...
Stacks really are for the showy type.
I should also mention that i wouldnt do stacks without a lift.
5" exhaust might do a little better than 4", but you really wouldnt see it until you're kickin out alot more exhaust... (like 40 lbs boost and stage 2's...)
Most exhaust vendors would tell you that 5" is unneccessary until after 450HP...
i think either 4" behind the rear wheel (in front of the rear wheel just soots everything up) OR 5" dual stacks... either mitre cut or turn outs!
-cutts-
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
If you want a good exhaust for a decent price 4 inch behind the tire is the way to go. Like fishman said don't go in front of the rear tire unless you don't care about dirty wheels (ask me how i know). But if you have the coin, stacks look great. No real benefit other than you have stacks!!9what more is there!) on that stacks 5 or 6 inch depending on lift/body config. and turn outs or miter cuts. IMO of course.
New User
Joined: Feb 2007
Posts: 18
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Stacks
Hey guys I dont mean to hi jack this thread but it seems like the appropriate place to ask. I am new to the diesel side of the Ford World here. I currently have a 88 F350 with a 351 gas motor in it sittin on a 6" lift with 38" super swampers under it and in about a week and a half I am picking up a 97 F350 regular cab long bed with a 7.3L power stroke turbo diesel with a 5spd behind it and 113k miles on it. Its got a 8" lift and 35" under it and is in excellent condition.. I am planning on dual 7" mitre cut stacks in the near future after I get it and am wondering if I should consider doing anything else first?? Thanks in advance for any info
Elder User
Joined: Jun 2006
Posts: 750
Likes: 1
Hey guys I dont mean to hi jack this thread but it seems like the appropriate place to ask. I am new to the diesel side of the Ford World here. I currently have a 88 F350 with a 351 gas motor in it sittin on a 6" lift with 38" super swampers under it and in about a week and a half I am picking up a 97 F350 regular cab long bed with a 7.3L power stroke turbo diesel with a 5spd behind it and 113k miles on it. Its got a 8" lift and 35" under it and is in excellent condition.. I am planning on dual 7" mitre cut stacks in the near future after I get it and am wondering if I should consider doing anything else first?? Thanks in advance for any info
And as far as doing anything first, if the trucks stock (engine wise) most are going to tell you ditch the stock downpipe and intake.