Hapa88 at 21:41, 11 March 2011

2011-03-11T21:41:21Z

DMClark at 22:07, 30 August 2008

2008-08-30T22:07:06Z

DMClark: New page:

Where Is the Tach pickup for the dyno?

[SS - 2000/7/5] There are two tachometer pick-off points.

The connector on the right side of the engine ...
2008-08-30T22:06:10Z

New page: <h3>Where Is the Tach pickup for the dyno? </h3> [SS - 2000/7/5] There are two tachometer pick-off points. <ol> <li>The connector on the right side of the engine ...

New page
<h3>Where Is the Tach pickup for the dyno? </h3>
[SS - 2000/7/5] There are two tachometer pick-off points.
<ol>
<li>The connector on the right side of the engine bay, as you describe below. This is intended for physical connection to the tach signal. I dont know who uses it, but its there.</li>
<li>The wire loop in the wiring harness immediately to the rear of the Ignition Control Module (ICM). The ICM is located on the throttle body underneath those 4 or 5 metal vacuum lines. See the vacuum lines? Now look just to the rear, between the lines and the strut brace. See the wire loop coming out of the rear ICM harness and then going back in? This is the inductive pick off point for the tach, which is used by everybody.</li>
</ol>
<h3> Manufacturer Claims </h3>
 Stock NSX : - 235 hp 
With Comptech Header/Airbox/Exhaust: - 245-250 hp 
With Comptech Header/Airbox/Exhaust/Cams/Heads : - 265-270 hp 
With Comptech Header/Airbox/Exhaust/Supercharger: - 300-305 hp 
With Comptech Header/Airbox/Exhaust/Supercharger/Cams/Heads: - 315-320 hp 
 
3.2L NSX - (Horsepower at the rear wheel) 
Stock: - 250 hp 
With Comptech Header/Airbox/Exhaust/Supercharger: - 350-355 hp 
With Comptech Header/Airbox/Exhaust/Supercharger/Cams/Heads: - 360-365 hp 
<h3> NSteXpo 2002 Dyno Day Results </h3>
[EDR - 2002/5/1] The information is presented in a "here-it-is" format. There is no twisting of the numbers, scaling of the graphs, or interpretations of the data. There are 17 vehicles with three pulls each, followed by a " Supercharger Shootout", where I compare three different 3.0L supercharged vehicles (BaschBoost, Comptech and GruppeM) against a normally aspirated vehicle of similar configuration as well as against each other. 
The only disclaimer, warning, or consumer product alert that I felt was necessary to include was the fact that the BaschBoost supercharged vehicle was utilizing a pulley designed to provide about 4 lbs. of boost, yet the ECU software (fuel map, etc.) is expecting 9 lbs. of boost. I felt it was fair to note this... not because I have one on order and need to feel better about the results, but because I can imagine the sh*tstorm that is likely to pop up on certain web message boards about the performance being different than the graphs / reports on the Science of Speed or Dali Racing websites where the units are sold. Again... it's not an excuse... just the facts in a "here-it-is" format.
<table border="0">
<tr>
<td> You can download the report in PDF format (4.4MB file size) from NSXPrime through this link: </td>
<td><a href="http://www.nsxprime.com/FAQ/Performance/images/NSteXpo2002_DynoReport.pdf"><img src="http://www.nsxprime.com/FAQ/Performance/images/NSteXpo2002_DynoReportPicture.jpg" border="0" width="100" height="129" /></a> </td>
</tr>
</table>
<h3> Owners' Dyno Results </h3>
Wilson Shiu 91 NSX 30k miles 
STOCK 
Max bhp 231.3 
Max Torque 181.7 
With air conditioning running: Max hp = 221.1, Max Torque = 172. The curve looks exactly the same except the line shift down to the right. The 10HP power loss is not bad at all. 
 
Brent Cobb, 91 NSX, 112k miles 
DC Headers, DC Exhaust, RM conical Air Filter, Dinan chip 
Max bhp=255.9 
Max Torque=196.7 
 
Christopher Anders, 94 NSX 56k miles 
RM Headers, RM exhaust, RM chip, K&N filter 
Max bhp=259.8 
Max Torque=194.8 

Skaria Thomas, 1995 NSX-T 
On the same DynoJet Model 248H Dynamometer, 4th gear runs: 
 
K&N drop in filter and Comptech exhaust: Max POWER: 252.3 HP Max Torque: 196.1 ft-lbs 
K&N drop in filter and Comptech headers & exhaust: Max POWER: 242.0 HP Max Torque: 185.9 ft-lbs
The SAE corrected numbers are shown above. When I graph the curves on the same sheet, there is a consistent loss across the entire operating band in HP and torque from 2000 RPM to 8000 RPM. I am anxiously waiting for Mark's Dyno Day results to see if there were any cars, both OBD I and II, that put out more power/torque with headers without changing the software. One additional note, the only other change to my car is the that it did not have the short gears and 4.55 R&P before... but that should not affect the numbers anyway.
I have called around and no one seems to know why this happened. Needless to say, I am quite disappointed. Should have left well enough alone.... or maybe not. ;-)
<h3> SoCal NSX Dyno Day Results </h3>
Facility: Mech Tech Motorsports, 1277 Simpson Way, Escondido, CA 92029, (760)432-0555 
Temperature: 71.3 �F 
Pressure: 29.30-0.50 in. Hg 
Altitude: 680 ft 
 
Note: the hp and torque are measured at the rear wheels. Typical drivetrain loses are 15-20%. 

<table border="0">
<tr>
<td valign="top">[[Image:mjdynoday1.jpg|thumb|none]]
 </td>
<td valign="top"> Owner: Mark Johnson 
Car: 92 NSX 
Mods: None
Max POWER: 218.2 
Max TORQUE: 180.2 </td>
</tr>
<tr>
<td valign="top">[[Image:rwdynoday1.jpg|thumb|none]]
 </td>
<td valign="top"> Owner: Robert Watson 
Car: 92 NSX 
Mods: HKS Exhaust, RM Racing Intake
Max POWER: 252.0 
Max TORQUE:191.6 </td>
</tr>
<tr>
<td valign="top">[[Image:dhdynoday1.jpg|thumb|none]]
 </td>
<td valign="top"> Owner: Doug Hayashi 
Car: 92 NSX 
Mods: Comptech Headers, Supertrapp 
Exhaust, K&N Intake
Max POWER: 244.9 
Max TORQUE: 190.6 </td>
</tr>
<tr>
<td valign="top">[[Image:msdynoday1.jpg|thumb|none]]
 </td>
<td valign="top"> Owner: Mark Schulten 
Car: 92 NSX 
Mods: Bell Twin Turbo
Max POWER: 316.5 
Max TORQUE: 254.0 </td>
</tr>
<tr>
<td valign="top">[[Image:avdynoday1.jpg|thumb|none]] </td>
<td valign="top"> Owner: Alex Vizcarra 
Car: 93 NSX 
Mods: Nitrous, RM Racing Intake, 
RM Racing Exhaust
Without nitrous: 
Max POWER: 255.7 
Max TORQUE: 191.6 
 
With nitrous: 
Max POWER: 309.5 
Max TORQUE: 263.2 </td>
</tr>
</table>
[RMC - 99/11/10] 1991 NSX w/ cat-back and intake 257.2 HP to wheels with 196.8 Torque
[[Category:Performance]]

@@ Line 22: / Line 22: @@
    <tr>
      <td> You can download the report in PDF format (4.4MB file size) from        NSXPrime through this link: </td>
-     <td>[[http://www.nsxprime.com/FAQ/Performance/images/NSteXpo2002_DynoReport.pdf|Dyno Report]] </td>
+     <td>[[http://www.nsxprime.com/FAQ/Performance/images/NSteXpo2002_DynoReport.pdf]] </td>
    </tr>
 </table>
 <h3> Owners' Dyno Results </h3>
 <p>Wilson Shiu 91 NSX 30k miles<br />

Performance Measurements - Revision history

Hapa88 at 21:41, 11 March 2011

DMClark at 22:07, 30 August 2008

DMClark: New page:

Where Is the Tach pickup for the dyno?