I have an '02 MCS with 83k miles, a -19% pulley, Cravenspeed CAI, Nology Hotwires, Miltek cat-back, DT bpv, and the rest is stock besides suspension and stuff.

A friend of mine got the Dash Command app w/ an ELM325 Bluetooth unit to his Android phone.

We plugged it in today and took the car for a quick run - I got it up to 70 mph in 3rd (5-6k rpm) and the readout never got above 145 hp.

So, is the reader wrong? Is something robbing HP from my car? Do I just need to Redline it (a little worried to do so with the -19% pulley). Or, with the age and mileage - is this expected.

Next question - what can I do, check, replace, etc... to help? No engine lights on at this time.

Thanks for the suggestions!

SpeedySmurf

 

I'm guessing it's your gearing, my 05mcs does 70 in second

 

I wouldn't expect much from a smartphone app when it comes to HP numbers. Put it on a real dyno if you really want to know how much you have.

 

Yes, if you want the maximum value.

But as Da_Ghost says, you need to measure on a dyno. A phone app cannot actually measure power. It can only make an indirect estimate based on the available data.

 

using dashcommand I read about 225HP 255 TQ , using a JB+ , was about 205/230 without so my numbers seam right in line with engine HP/TQ , not RWHP but seams
pretty darn close.

 

Smartphones aren't always so smart, are they?

 

I just got my Bluetooth adapter for my iOS devices, and picked up DashCommand when it was on sale a few weeks ago.

I had a recent dyno run as a baseline, so I'll give it a run in the next few days and let you know how close they are (but as others have mentioned, you can't take the app's word for it given that it is basically making educated guesses)

 

Remember...
A smartphone app is just taking assumptions (mostly weight) then calculating a estimated HP based on time, and distance (acceleration rate, etc.)...basic 9th grade physics.... But the range of errors can be big...got junk in the trunk? Maybe an extra passenger? Stereo amp and box...if the weight input or assumed by the app is off...everything else it outputs is off....