Impressive dyno #s for my NSX . . .

[brahtw8]

I was at the dyno with a friend who just installed a Comptech Supercharger and was doing a bit of tuning.

I decided to put my Naturally Aspirated car on the dyno to see what she would do. The only power modifications are a Cantrell Concepts Air Induction System and an Anytime Race Exhaust. The car has stock headers and a stock airbox with stock filter.

I was expecting the car to put down 245-250 rwhp and 190-195 rwtq. My friend's NSX had dynoed at 256/197 with headers, exhaust and an ECU.

Needless to say, I was pleasantly surprised when she came in at 260.8 rwhp and 201.8 rwtq.

With 13% drivetrain loss, that is 300hp/232tq at the crank. Use 15% and we get 307 hp. and 237 tq. The NSX as an MR car is efficient, so 13% is probably the better # to use.

I have looked at a number of other dyno results, and my numbers are the highest I have seen for similar modifications. The dyno is believed to be accurate given the numbers it gave for my friend's car on prior days and the day my car was run. It also confirms what I have suspected and observed relative to other similarly modded NSXs.

With headers, cams and an ECU, I should be well over 300 at the wheels. [headbang]

I suspect my top end rebuild a couple years ago improved the head flow.

 

[Tom]

Very nice, how much did you SC set you back?

 

[brahtw8]

I think you misread my post. My car is NA. I was at the dyno with a friend who has a Comptech supercharger on his car. My dyno run is for a naturally aspirated 3.0 liter NSX engine with exhaust and intake only (and with stock airbox and filter). There are no other power mods on my car.

His car currently makes 315-320 hp at the wheels with the basic CTSC. He could get close to 400 with larger injectors and better engine management. The basic CTSC kit can be purchased new for $7k if you can find a good deal.

 

[Tom]

I think you misread my post. My car is NA. I was at the dyno with a friend who has a Comptech supercharger on his car. My dyno run is for a naturally aspirated 3.0 liter NSX engine with exhaust and intake only (and with stock airbox and filter). There are no other power mods on my car.

His car currently makes 315-320 hp at the wheels with the basic CTSC. He could get close to 400 with larger injectors and better engine management. The basic CTSC kit can be purchased new for $7k if you can find a good deal.

Ah, indeed I've misread your post. I thought you were the one with the SC. $7k is a great deal for a SC kit, its too bad we don't have anything like that for the M3.

 

[brahtw8]

Active Autowerke and Dinan have both recently developed superchargers for the S54 engine . . .

I don't know the cost or specifics, but around $10k and 100 hp boost seem like a reasonable estimate for a kit.

From Dinan's website:

We have plans for two Dinan Supercharger Systems. One program will be the traditional “bolt on” approach and the other will include even more boost and a large air to air intercooler. While tuning of these systems continues, for now let it suffice to say that the systems are currently producing about 420 hp and 475 hp respectively. These are by no means intended to represent the final numbers but this will at least give prospective buyers a sense of the enormous power that will be available from the Dinan systems. And, of course, the systems will be backed by the most comprehensive warranty in the industry!

 

[Tom]

Yup saw the AA one, but when I read C&D's review on the car, they commented that the car performed very poor for the power it was putting out.

I'll have to keep an eye on Dinan's website.

 

[codex57]

Wow, those are some nice numbers! Congrats!

 

[Kirby]

Nice figures and a welcome surprise, I'm sure!

Another NSX note - I read in Motor Trend or Auto Week, forget which, that Honda has announced the end of NSX development. The Bean Counters figure that total product life cycle costs have exceeded $800 million and the payback was never close. Too bad, I always liked the NSX. It is one of those cars that I still remember exactly when and where I saw it for the first time.

 

[brahtw8]

Although still unclear by most reports, it appears the current production is going to end some time this year. There is a lot of speculation about the HSC as the replacement. Only time will tell if any of these rumors are valid.

 

[epj3]

Wow that torque curve is incredibly flat.

 

[MrElussive]

Wow, pretty good numbers. The most accurate results would be obtained by using that same dyno before & after the mods.

 

[brahtw8]

Wow that torque curve is incredibly flat.

I thought you might notice that given the earlier thread where no one could find a stock Honda motor with a flat torque curve. (Mine is not stock, but nothing has been done to alter the torque curve shape, just to move it up the chart a bit).

The other cool thing about the dyno curve is you can see the induction system switch at 4800 and the VTEC engagement at 5800 and how they change the torque curve and extend it to allow the engine to make good torque at high RPM.

 

[brahtw8]

Wow, pretty good numbers. The most accurate results would be obtained by using that same dyno before & after the mods.

If you mean accurate in terms of the increase from the mods I certainly agree. This was my first dyno, so that is not really an option.

The car was dynoed by the previous owner at 233/185 in 2000 or 2001 on the same model of dyno but a different location.

 

[jrt67ss350]

That's really impressive! I'm sure you were pleasantly suprised. I bet that baby really scoots. I've never really been a big fan of Hondas, but man, I would love a ride in an NSX - I've always thought they were sexy cars.

 

[Average Jae]

I loooove the NSX. i almost thought about dropping around 20g on a used one from the 90s.. quite an impractical purchse for the only car, but is a kickin second car imo!

well Ryan, if you ever tire of that sexy lil MR, i'd love to see if i can get it off your hands. hopefully i'd have a bigger garage and my own place by then, so i won't have to choose which one of my rides will sit outside..