First and foremost, we are here to help each other. If you don’t have constructive comments to add, please don’t jump on this post. That is please don’t turn this into why you think the “BBSC SUCKS”.
Here is the summary of the recent NSX dyno day at Matrix Engineering in Portland, Oregon. As mentioned in http://www.nsxprime.com/forums/showthread.php?s=&threadid=28059, this is a Mustang dyno. The staff at Matrix and I expected lower HP numbers than are typically reported from Dyno Jet dyno’s. (My wife’s Audi S6 is rated at 340hp and pulled 220+hp on this dyno several months ago. Yes, the dyno is all wheel drive capable and yes Quattro has significantly more losses than our NSX’s) So, the numbers (except mine
) are higher than expected.
I don't know how to post my .xls graph, but here is the data:
Who Year Max HP Torque Mods changes notes
Roy 1995 306 214 BBSC, 32,340 miles 4.3lbs boost, rich, belt loose?
Roy 1995 312.4 217.8 BBSC, 32,340 miles Bypass VVIS 4.3lbs boost, rich, belt loose?
Roy 1995 323.5 224.8 BBSC, 32,340 miles changed map, VVIS stock 4.6lbs boost
Dave 1993 363.7 253.3 CTSC, CT headers, CT exhaust, CT intake, K&N filter, 37.100 miles Lean
Dave 1993 368.2 258.4 CTSC, CT headers, CT exhaust, CT intake, K&N filter, 37.100 miles Cats replaces with Test Pipes Lean
Jerry 1999 302.1 229.3 Stock + K&N, 18,288 miles
Paul 1999 304.8 232.8 Stock, 4000 miles
Pam 1991 282.2 218.5 Cantrell (sp?) intake, TIATEC exhaust,
Morgan 1993 302 ?? TIATEC GT Exhaust, 25,000 miles
Mark 1993 283 210.2 Stock
My car: I purchased my 1995 NSX-T two years ago with 9,500 miles. I had the 6 year service done before taking delivery. MarkB installed my BBSC in the SF Bay area in Aug ‘02 when the car had 15,700 miles on it. The SSBB has been updated to the latest version and is installed behind the passenger seat, near the factory ECU. I have recently installed a serial cable that allows easy communication to the SSBB. Otherwise the engine & drive train are stock. Original clutch is still performing fine. As noted in the chart, the car now has 32,340+ miles on it. I’ve had regular oil changes, tire changes and brake maintenance done. The service due 15K miles after the 6 year service is currently being done, late.
Me: I’m happy with the BBSC. I range from thrilled with MB’s service to, wishing that he responded quicker at times. Overall, I’m pleased. I find MB’s personal commitment to customer service outstanding. My “butt dyno” is not very sensitive. If a mod does not result in ~50% improvement, I’m not likely to notice. That made the BBSC a good choice for me.
When I installed the in cabin serial cable, during street driving, I found that the SSBB reported boost was in the 4lb range, below the 6lbs expected. This was confirmed on the dyno with a mechanical gauge. I also confirmed the fuel pressure stayed ~55psi through out the dyno run. This will need to be retested when I have the appropriate boost.
I believe the drive belt is slipping and accounts for the disappointing dyno results. (I also believe my BBSC installation has produced MUCH more power in the past.) By increasing the belt tension some, the boost was increased from 4.3 on the dyno to 4.6. I believe more tightening (or a belt replacement?) is in order. With consultation from MarkB, AndyV and NSXNUT, (THANKS guys) my first attempt at adjusting the fuel map was fairly easy and resulted in an improved HP and improved AF across the dyno run.
I'll attemp to post initial and final AF graphs, & HP/torque graphs.
Here is the summary of the recent NSX dyno day at Matrix Engineering in Portland, Oregon. As mentioned in http://www.nsxprime.com/forums/showthread.php?s=&threadid=28059, this is a Mustang dyno. The staff at Matrix and I expected lower HP numbers than are typically reported from Dyno Jet dyno’s. (My wife’s Audi S6 is rated at 340hp and pulled 220+hp on this dyno several months ago. Yes, the dyno is all wheel drive capable and yes Quattro has significantly more losses than our NSX’s) So, the numbers (except mine
) are higher than expected.I don't know how to post my .xls graph, but here is the data:
Who Year Max HP Torque Mods changes notes
Roy 1995 306 214 BBSC, 32,340 miles 4.3lbs boost, rich, belt loose?
Roy 1995 312.4 217.8 BBSC, 32,340 miles Bypass VVIS 4.3lbs boost, rich, belt loose?
Roy 1995 323.5 224.8 BBSC, 32,340 miles changed map, VVIS stock 4.6lbs boost
Dave 1993 363.7 253.3 CTSC, CT headers, CT exhaust, CT intake, K&N filter, 37.100 miles Lean
Dave 1993 368.2 258.4 CTSC, CT headers, CT exhaust, CT intake, K&N filter, 37.100 miles Cats replaces with Test Pipes Lean
Jerry 1999 302.1 229.3 Stock + K&N, 18,288 miles
Paul 1999 304.8 232.8 Stock, 4000 miles
Pam 1991 282.2 218.5 Cantrell (sp?) intake, TIATEC exhaust,
Morgan 1993 302 ?? TIATEC GT Exhaust, 25,000 miles
Mark 1993 283 210.2 Stock
My car: I purchased my 1995 NSX-T two years ago with 9,500 miles. I had the 6 year service done before taking delivery. MarkB installed my BBSC in the SF Bay area in Aug ‘02 when the car had 15,700 miles on it. The SSBB has been updated to the latest version and is installed behind the passenger seat, near the factory ECU. I have recently installed a serial cable that allows easy communication to the SSBB. Otherwise the engine & drive train are stock. Original clutch is still performing fine. As noted in the chart, the car now has 32,340+ miles on it. I’ve had regular oil changes, tire changes and brake maintenance done. The service due 15K miles after the 6 year service is currently being done, late.
Me: I’m happy with the BBSC. I range from thrilled with MB’s service to, wishing that he responded quicker at times. Overall, I’m pleased. I find MB’s personal commitment to customer service outstanding. My “butt dyno” is not very sensitive. If a mod does not result in ~50% improvement, I’m not likely to notice. That made the BBSC a good choice for me.
When I installed the in cabin serial cable, during street driving, I found that the SSBB reported boost was in the 4lb range, below the 6lbs expected. This was confirmed on the dyno with a mechanical gauge. I also confirmed the fuel pressure stayed ~55psi through out the dyno run. This will need to be retested when I have the appropriate boost.
I believe the drive belt is slipping and accounts for the disappointing dyno results. (I also believe my BBSC installation has produced MUCH more power in the past.) By increasing the belt tension some, the boost was increased from 4.3 on the dyno to 4.6. I believe more tightening (or a belt replacement?) is in order. With consultation from MarkB, AndyV and NSXNUT, (THANKS guys) my first attempt at adjusting the fuel map was fairly easy and resulted in an improved HP and improved AF across the dyno run.
I'll attemp to post initial and final AF graphs, & HP/torque graphs.
