header question
03-09-2010, 01:48 AM
#2
2nd Gear Member
Join Date: Jan 2008
Location: NJ
Posts: 401
I feel NA cars benefit the most from shorties. The shorties create back pressure giving you more low end power. LT's benefit from forced induction, allowing the car to breathe better. LT's on a NA car will lower your low end power.
03-09-2010, 07:25 AM
#3
2nd Gear Member
Join Date: Apr 2006
Location: Lamoni, IA 50140
Posts: 422
I always thought you could get a lot more out of LT with a tune.
03-09-2010, 09:36 AM
#5
2nd Gear Member
Join Date: Jan 2005
Location: New Jersey
Posts: 250
Yeah...I have read quite a few threads on another forum stating that shorties are only for sound and there is no real gain from them unless you are going to go turbo in your car. If you are staying N/A or going supercharged, then go for long tubes.
03-09-2010, 11:43 AM
#7
2nd Gear Member
Join Date: Jan 2005
Location: New Jersey
Posts: 250
I wouldn't guess about that one. Be 100% sure of which direction you want to go first, then make your decision about your exhaust. Also, something to consider is that if you are going to do a custom twin turbo set-up, I think I've seen some that use the stock exhaust manifolds and turn them around and I suspect you wouldn't be able to do that with shorty headers due to room constraints.
03-09-2010, 12:24 PM
#8
5th Gear Member
Join Date: Oct 2009
Location: Oregon
Posts: 2,645
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
http://www.thumpertalk.com/forum/sho...d.php?t=659727
The idea that back-pressure gives you more torque is a myth. The ONLY time having exhaust that flows less with equate it more power is when your engine/computer cannot compensate for the better flow, and your engine leans out.
Back-pressure = power lost.
Long (and more importantly equal length) tubes, increase the exhaust velocity and allow the pulse waves of the exhaust to all enter the collector in the same time period, helping to equalize pressure. That coupled with an h or, even better, an X pipe help to create even flow throughout the entire system.
http://www.thumpertalk.com/forum/sho...d.php?t=659727
The idea that back-pressure gives you more torque is a myth. The ONLY time having exhaust that flows less with equate it more power is when your engine/computer cannot compensate for the better flow, and your engine leans out.
Back-pressure = power lost.
Long (and more importantly equal length) tubes, increase the exhaust velocity and allow the pulse waves of the exhaust to all enter the collector in the same time period, helping to equalize pressure. That coupled with an h or, even better, an X pipe help to create even flow throughout the entire system.
