[JMLST]

Hows it going everyone? Checking in from GA on this beautiful day. Do you have any experience with the Diagnostic Scan apps like DashCommand or OBD Fusion? IF you are reading this and don't know what it is or what it does I will tell you. You can pick up a Bluetooth or WiFi OBD2 port dongle on Amazon for around $20 and then connect this to your phone or table via one of the apps (around $10). This will allow you to clear codes, or to review gas consumption, intake temps, coolant temps, and even review the power that your vehicle is putting out. You can review both Horsepower and Tq. The reason for the post is I wanted to see how close or accurate the Horsepower and Tq numbers would be with these applications. I have found the numbers to be pretty close to reported for various vehicles that I have used it in, but the power and the tq figures for the FoST are a bit more than stock. Thanks, and if you made it this far you are a rockstar!

 

[elyk864]

I have used Torque Pro but not the ones you have listed there. If you are looking into getting HP/Tq #'s look into VDyno.

 

[JMLST]

I have used Torque Pro but not the ones you have listed there. If you are looking into getting HP/Tq #'s look into VDyno.

Are the numbers accurate? I feel they are pretty close. This would obviously be power at the motor vs. the wheel.

 

[elyk864]

I've noticed the Torque Pro was reasonably close. But it also is just dependent on engine load so if you are getting wheel spin the #'s will be junk.

 

[aaronc7]

Yes, get a good datalog and import to computer program called VDyno. It's pretty darn good for what it is. It takes weight, drag, atmospheric conditions into account. It may not give you exact same # readout as your local dyno, but I've found that if you do back to back runs on a flat road, it's consistent, which is really what's important. A lot of those apps that give you instant hp/tq readings are probably far too generic to be taken seriously.

For VDyno, I think the basics you would need to log is RPM, vehicle speed. Throttle is also used I think to auto crop the log file to make things easier for you. If you log AFR and/or boost that can be displayed as well. Save or export the file as a csv and it should know what to do with it.

Virtual Dyno

 

[JMLST]

Awesome. This is a great idea for someone who is wanting to mod. Do an initial run stock a few times to get the numbers, put your intake, or cat back or tune and then run again.

 

[aaronc7]

I will also add that, a BT obd adapter will certainly work, but something like the Cobb AP will be much better. With the Cobb AP I just did a quick test datalog and it captured 27 channels at a 15-16 hz update rate. So that's what.... around 400 params logged per second? Best I have seen for bluetooth is around 50-60 and most apps that are not very well optimized are even lower. And I have the OBDLink MX which is one of the best ones, so probably won't see much better than that. More data resolution = more dyno resolution. Just don't have unnecessary parameters selected if you choose to go the bluetooth route. Maybe don't both selecting things like throttle, boost or afr so you can get max rpm and speed input rate.