Reapur

Unless you happen to own a dyno, accurately keeping track of which modifications benefit your vehicle may be a seat-of-the-pants operation. AEM is hoping to change that for people who are serious about wringing the absolute most out of their vehicle with the unfortunately-named Dyno-Shaft.

While the product may sound like a bizarre fetish film, it has the potential to revolutionize tuning for those of us who don't have access to high-dollar engine evaluation equipment. The Dyno-Shaft uses grade-strain gauges to measure horsepower and torque at transmission output shaft, so AEM maintains that the system's readings aren't impacted by variables that typically skew accelerometer readings.

AEM says that the the data broadcast device for the system is non-contact, doesn't use slip rings and needs no batteries, all of which are good things. Buyers simply install the supplied slip-yolk as well as a drive-shaft speed sensor and get going. Data is transmitted via a CAN-bus communications network to a data logger or an AEM engine management system. Prices start at $1,160.96 for cast-iron slip yolk applications, and AEM says that each Dyno-Shaft is specifically calibrated for your application. Chrome moly yolks are also available for higher-horsepower applications. We desperately want to play with one of these to see how accurate it is compared to a traditional full dyno setup.AEM lets you hook up your car to a dyno at home with Dyno-Shaft originally appeared on Autoblog on Wed, 23 Nov 2011 18:01:00 EST. Please see our terms for use of feeds.

Click the link below for more detailed info !

Gernby

You don't need that for modern platforms, since all USDM cars were required to have CAN bus beginning in '08. However, some cars had CAN bus before that, like the '06+ S2000. The speed sensors on the S2000 update at a fast enough rate that you can generate a VERY good dyno plot from it using an off the shelf CAN dongle.

Here is a plot from my S2000 using software I wrote.



Here is my car on a DynoJet.

Reapur

And if you own an older car? 2000-2005 could still use this. Currently there are no applications for any imports, but if there is demand AEM should make it eventually. The S2000 is already a heavily supported car in aftermarket products, AEM already makes the pre requisite product for our car, the EMS.

FluKy15

Aaaaaaand that was what I was talking about in the other thread you posted in our local section. Never knew it was a flashpro only thing, I thought the AEM could do it too.

turbo8765

This came up under '03 S2000...

http://www.aemelectronics.com/30-480...an-series-1270