Aftermarket header gains for a 97+
- Thread starter fangtl
- Start date
Often headers and exhaust combined seem to offer the improvement on a 97+
http://www.comptechusa.com/images/dyno/2000NSXscPlot3.pdf
HTH
http://www.comptechusa.com/images/dyno/2000NSXscPlot3.pdf
HTH
fangtl said:
It's hard to say, going from the stock headers to comptech
headers actually made my car lose some low end torque and
the car only gained a couple of HP at high RPM's.
These results were based on using a RM Racing exhaust with
stock headers vs comptech headers, dyno tested and also as
a result of a seats of the pants feeling.
I finally regained the lost low end torque when I switched to
a comptech exhaust. (The RM Racing exhaust had a lot less
back pressure when compared to the Comptech one)
BTW: my NSX is a 97
Just my 2cents.
Ken
Last edited:
Hank,
I got NOTHING out of mine in terms of HP.
I got NOTHING out of mine in terms of HP.
Funny......I thought I was the only one who thought that was strange
Not that I have a vested interest, I have researched this enough to give you a few pointers. Please review the chart carefully. It all depends how you want to read the chart.
The 13HP you quote is correct at 7800RPM. How often do you drive at 7800 RPM? Yes I know .... <vbg> And when you floor it or go through the gears where do you really start with your RPMs?
Most of us drive most of the time in the range of 3000 RPM in a 3.2L 6 speed. Up to 5400 RPM or VTEC range the exhaust does NOT offer any improvement, and it is only after 6600 RPM that it starts showing any signifcant gains. Therefore up to about 6600 RPM the exhaust your are getting some sound with no real or significant HP improvement to speak of. In fact at lower RPMs, the exhaust alone takes away some of the torque compared to the OEM. It's a balancing act with an exhaust alone. At low RPMs you get marginal sound at the expense of loss in low end torque (and this is true with most aftermarket exhausts on a 3.2L), and great sound with some gains above 6600 RPMs.
BUT, when you add both the exhaust and the header, you get great sound AND HP AND torque across the ENTIRE spectrum.
HTH
98-T and for now still stock Headers/Exhaust
And did I mention that Comptech is a major sponsor of NSXPO 2003?
The 13HP you quote is correct at 7800RPM. How often do you drive at 7800 RPM? Yes I know .... <vbg> And when you floor it or go through the gears where do you really start with your RPMs?
Most of us drive most of the time in the range of 3000 RPM in a 3.2L 6 speed. Up to 5400 RPM or VTEC range the exhaust does NOT offer any improvement, and it is only after 6600 RPM that it starts showing any signifcant gains. Therefore up to about 6600 RPM the exhaust your are getting some sound with no real or significant HP improvement to speak of. In fact at lower RPMs, the exhaust alone takes away some of the torque compared to the OEM. It's a balancing act with an exhaust alone. At low RPMs you get marginal sound at the expense of loss in low end torque (and this is true with most aftermarket exhausts on a 3.2L), and great sound with some gains above 6600 RPMs.
BUT, when you add both the exhaust and the header, you get great sound AND HP AND torque across the ENTIRE spectrum.
HTH
98-T and for now still stock Headers/Exhaust
And did I mention that Comptech is a major sponsor of NSXPO 2003?
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