There are a lot of people on this site including myself who have added headers as one of their upgrades,,it seems that most have added the LONG TUBE type,, as for me I went with the JBA shorties,, Years of track Drag Racing and some street racing lead me to make this choice and for good reason. Long Tube headers make a few more HP then the shorties, but it comes at a cost.. Long tube headers make power at much higher RPMs where as the Shorties make their power at low to upper mid range RPMs anywhere from around 2000 to 4500 RPMs,, this is where most of us do our driving,,the Long Tubes are useless in this range,, a dyno run will prove this fact, at Higher RPMs the long tube type will generate about 6 more HP then shorties but at the Lower to upper mid range area the Shorties have a good HP atvantage over long Tubes,,
At the track Long tube will be more usefull for top end where as the shorties will provide the extra HP but more importantly more Torque where it is needed. LOW to MIDRAGE, this is where most of the races are won. the 1st 500 ft
I am currently looking at buying the JBA shorties. I only plan to use my car as a daily driver. I am definitely want the low acceleration over the top end speed.
Before buying the JBA shorties, are there any problems I need to take into consideration? Any fitment issues? Will I need to buy an longer O2 sensor cable?
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'05 Imp Metallic Blue M6, No Spoiler, Magnaflow w/X-pipe, JBA shorty headers
Actually the longer the tubes on the headers the lower in the rpm band it brings in the torque band, it has to do the with the resonate frequency of the tube which is based on length and diameter, intake tracks work the same way long tubes small diameter equal stong bottom end but die off on the top end, short intake track larger diameter equal loss on bottom end gain on top end.
Remember these are all relative to the same engine.
Dang I new I should have skipped physics class, all this stuff still floating around in my head.
On paper what you said makes sence, but on the track this theory does not work,, just look at all your Top Fuel, Funnycars, Pro Street and others, they all use short headers, because they produce more power at the lights and midtrack... Also, FULL COMP headers come with adjustable and different collector lengths so you can tune at the track for the conditions.. With Street Headers you are pretty much STUCK with what you have,, for a car that is 99 percent a daily driver ,, Shorties have the advantage,
Also just go to a dyno shop,,take 2 identical cars,, but one with shorties and one with long tube,,the shorties will make more power at low to midrange
J.D
Retired AEROSPACE ENGINEER , Pratt and Whitney Airrcraft
I am currently looking at buying the JBA shorties. I only plan to use my car as a daily driver. I am definitely want the low acceleration over the top end speed.
Before buying the JBA shorties, are there any problems I need to take into consideration? Any fitment issues? Will I need to buy an longer O2 sensor cable?
,,
There are a few good header makers for this car,, what it boils down to is your own choice..on the street the Shorties do it for me, but again it is your choice. Long tubes will cost you about $1,200 compared to about 650.00 or so for the shorties, and you will not feel the difference between the 2,,also the shorties are cheaper to install if you have a shop do it,, you will end up saving a lot of cash and you can use the saved money for other items,
I don't know. I've heard alot of people say the shorties don't FEEL much more powerful than stock manifolds. Can't say I agree or disagree, becuase I've never ran a car with them. I do, however have LT's on my 04, and MAN, what a diffrerance over stock!
Have JBA full sytem installed for about a year now. No problems at all and U dont need any 02 extensions everything will bolt up fine. My pre nums were 348, with tune and JBAs 380. Great modding
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