Recent Topics
10k posts
by sciphi
02/27/17 08:49 PM
Front diff and T case fluid change.
by Rat407
02/27/17 08:28 PM
Cruise control deactivation switch -Grand Marquis
by mercuryblues
02/27/17 08:22 PM
Mobil 1 Annual Protection
by njohnson
02/27/17 07:19 PM
0w 20 or 5w20?
by beckerized
02/27/17 06:57 PM
MC FL-500S, 2014 F-150, 6,000 miles CUT OPEN
by car51
02/27/17 06:55 PM
2006 Odyssey EX-L, 6.5k, much improved with old PP
by SubieRubyRoo
02/27/17 06:45 PM
Wix still make Oreilly Microgard??
by zeke1985
02/27/17 06:45 PM
Chromebook
by Scrum67
02/27/17 06:37 PM
Picked up a Tahoe
by clinebarger
02/27/17 06:35 PM
Godyear Endurance trailer tires vs Kumho 857
by i6pwr
02/27/17 05:55 PM
2016 Jeep Patriot Sport
by Corollaman
02/27/17 05:45 PM
AGCO Auto defines "synthetic" oil
by Ed_Flecko
02/27/17 05:25 PM
Lucas UCL causing cat issues? (PICTURE)
by 2012AccentSE
02/27/17 04:56 PM
Forgot Oil cap - Should I sample?
by meborder
02/27/17 04:31 PM
Cheap Effective Charcoal Lighter
by sleddriver
02/27/17 04:06 PM
Need something to mow 2.4 acres
by skyactiv
02/27/17 03:51 PM
Oil FAQ introduction thread somewhere?
by Dumc87
02/27/17 03:40 PM
AT Overfill causes higher pressure?
by Klutch9
02/27/17 03:18 PM
PUP replacement
by camb
02/27/17 03:14 PM
Newest Members
Seadub, joloo, anoilgirl, pepper4512, bordercity242
60667 Registered Users
Who's Online
97 registered (4WD, 02s4audi, 2004tdigls, AccordK24, 87sammy, 04SE, 12 invisible), 2086 Guests and 13 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
60667 Members
66 Forums
261658 Topics
4317095 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 4 of 4 < 1 2 3 4
Topic Options
#3392663 - 06/09/14 12:16 AM Re: Why Aren't Headers Standard Equipment? [Re: rslifkin]
TiredTrucker Offline


Registered: 01/04/08
Posts: 2907
Loc: Central Iowa
Originally Posted By: rslifkin


It does throw a little more heat into the engine bay


Thank God for header wrap, eh?
_________________________
Freedom is not about having the choice to do what you want, but the choice to do what you ought.

Top
#3393094 - 06/09/14 02:36 PM Re: Why Aren't Headers Standard Equipment? [Re: JerryBob]
PandaBear Offline


Registered: 08/05/02
Posts: 13448
Loc: Silicon Valley
Why? Because it is not a good use of the R&D and production money. You can get much more out of the same cost if your car is designed with better engine (i.e. variable valve timing or variable intake opening) than different tubing length / width.

Also a much bigger header only increase top end HP at the expense of bottom / mid range, so why bother?

Mazda use it for their skyactiv motor because of their piston and injector design that can benefit more from it. It is not as useful for the more common / old school engine design.
_________________________
"You keep asking questions PandaBear and you'll end up a vegetarian like my wife" - Camu Mahubah

Top
Page 4 of 4 < 1 2 3 4