TheMongoose
3/11/2005 11:50:06 PM
Found a site or 2 that have run dynos with headers and they don't seem to make much improvement. Any experience out there? Seems like the NT car doesn't respond well to bolt ons in general. Just getting into this so i have very littl einfo so far. Is the head and intakea big restriction?
TheMongoose
3/11/2005 11:51:33 PM
Forgot to mention it's an 98 Eclipse 2.0 NT car
DSMTalonAWD51
3/12/2005 3:31:15 AM
depends on what you mean by a big improvement. NA eclipse dont make near as much power with bolt ons as the turbo eclipses because most improvements for turbo cars involve increasing boost or airflow, something much more difficult to do with no turbo. the key for NA cars is good tuning, but first you need to squeeze out every horsepower you can get with bolt ons, and headers are usually a pretty good bolt on for those cars, but design makes much more of a difference for NA which is why headers can get so expensive.
GReddyGST
3/13/2005 11:25:23 PM
Yeh, headers for N/A cars give anywhere in the neighborhood of 7-15 h.p (guesstimate dependingon the app.) Turbocharged cars benefit 15-25 h.p with downpipes
TheMongoose
3/14/2005 11:49:14 PM
Cool. The review I found only got about 5 and that was after tuning. Pretuning they had 2 I believe. 7-15 would be more my expectation. I was figuring 5-10%. Do headers require tuning to gwet the A:F right? I'm not familiar with this computer yet.
Any recommendation on tuning software for the Eclipse? This is my 1st shot at a 4cyl. tuner car.
1398spdr
3/15/2005 3:06:19 AM
a pocket logger is all ya really need, basically a palmpilot with the software and odb2 hookup...........
Wade87
4/15/2005 11:02:27 PM
A popular tuning method in the vdub world, for n/a cars, is to increase the compression ratio. In that case though you're looking at rebuilding the engine with hardened parts. Enjoy that adventure.
wicked_outlander
4/17/2005 10:56:34 PM
uhuh' its all about the compressions, gotta' put that power to the ground.
insane
1/19/2006 2:08:19 PM
headers do help some increase but theyre really more for the sound
EMonz57
1/24/2006 1:57:41 PM
quote:
ORIGINAL: insane
headers do help some increase but theyre really more for the sound
headers will do quite a bit for an N\A car that is where the most hidden HP will be for you to get, but yes sound will be much louder too
anko_kun
1/25/2006 5:23:58 PM
i put a header on my friends gs and it gave a good increce in hp he loves it
FireDoc
1/27/2006 1:19:52 PM
The gains you will see are on a case-by-case basis. If the stock manifolds on your vehicle are efficient, you are not going to see much. On the other hand, if you have an engine where the exhaust manifold was designed around saving space in the engine comparment you stand to see pretty good gains.
EMonz57
1/27/2006 4:18:39 PM
mitsus manifolds are really not that great... not many stock manis are. either way there is some gains to be made out of header(s) and on the 3G eclipses I know they can help for a slight gain
DeathCabForCutie
1/27/2006 11:12:07 PM
where would you all suggest ordering headers from??? any specific brands?
Mitsiman
1/29/2006 8:45:17 PM
Not all headers are equal but the stock mitsubish ones are definitly not a good design.
Check out our units at
www.rpw.com.au - we have a fairly large range of racing design 4-1 units for most mitsubishi model vehicles.
But saying that - don't expect gains of anything more than a max of 10hp on the average. They may be restrictive but not that restrictive. Gains are usually torque, hp and driveability.
