dyno numbers seem low - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

stealth_fighter · 01-31-2013, 11:18 PM

Hey guys, i just went to the dyno today and my numbers seemed odd. 132HP @ 6400, 127ft-lb TQ @ 2500 & 4500 rpm. It was a Mustang Dyno. No clue what the AFR was. Could the winter grade fuel be the issue? The outside temp was around 8deg.

Jlin · 01-31-2013, 11:31 PM

Quote:

Originally Posted by stealth_fighter

Hey guys, i just went to the dyno today and my numbers seemed odd. 132HP @ 6400, 127ft-lb TQ @ 2500 & 4500 rpm. It was a Mustang Dyno. No clue what the AFR was. Could the winter grade fuel be the issue? The outside temp was around 8deg.

if anything you should be making more power during colder temps.

Jesse@JDLAutodesign · 01-31-2013, 11:34 PM

Some mustangs read low...i wouldn't worry.

kilrb · 02-02-2013, 08:48 PM

Mustang dyno's usually do read lower than Dynojets. From my LS1 Vette days, I remember cars getting 20 or 30whp less on a 400whp car. Don't know if its proportional or not, but I wouldn't be surprised to see that number on a Mustang dyno.

fistpoint · 02-02-2013, 09:28 PM

Just curious as I know nothing of these things...but if this Mustang system is known for giving low numbers, doesn't that equate to the system being basically worthless?

What would be the point of having a system designed to measure HP that always measures lower than it really is? It's like using a broken thermometer to check your temperature.

AVOturboworld · 02-02-2013, 09:38 PM

It's basically worthless if you want to have numbers to brag about, yes.

But that's not the purpose of a dyno. It's a measuring stick to see if your tuning is doing something or not. It doesn't matter if the baseline is 120 or 180, the idea is to measure the gain from that baseline.

kilrb · 02-02-2013, 09:47 PM

Quote:

Originally Posted by fistpoint

Just curious as I know nothing of these things...but if this Mustang system is known for giving low numbers, doesn't that equate to the system being basically worthless?

What would be the point of having a system designed to measure HP that always measures lower than it really is? It's like using a broken thermometer to check your temperature.

I have always ascribed to the view that the number is meaningless in and of itself. In my opinion (and others much more valuable than mine), dyno's are useful as a tool when you get a baseline on one machine, then modify, then return to the same dyno for another run. Even two different Dynojets will get different results. And then there are the shops who adjust their atmospheric corrections to get higher numbers to make customers happy. My $0.02 worth is don't worry about the number itself, but the changes as you mod the car...

mact · 02-02-2013, 09:48 PM

Quote:

Originally Posted by stealth_fighter

Hey guys, i just went to the dyno today and my numbers seemed odd. 132HP @ 6400, 127ft-lb TQ @ 2500 & 4500 rpm. It was a Mustang Dyno. No clue what the AFR was. Could the winter grade fuel be the issue? The outside temp was around 8deg.

You were at Performance 2ning outside of Dubuque right? I want to get my car dyno'd there sometime. It'd be interesting to compare numbers.

DarkCard · 02-02-2013, 09:54 PM

Mustang Dynos are called "Heartbreakers" for a reason. They're low reading dynos.

stealth_fighter · 02-02-2013, 10:01 PM

Quote:

Originally Posted by mact

You were at Performance 2ning outside of Dubuque right? I want to get my car dyno'd there sometime. It'd be interesting to compare numbers.

I was indeed. My first impression is i like the shop. The guys are pretty knowledgeable and the pricing is on par with what i expected. I would recommend then and will be going back one i get me intake and tune so i can fine tune it.

01-31-2013, 11:18 PM	#1
stealth_fighter Member Join Date: Jan 2013 Drives: FA20Club ELH&CAI, MT,Tinted, Raven Location: platteville, wisconsin Posts: 35 Thanks: 1 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	dyno numbers seem low Hey guys, i just went to the dyno today and my numbers seemed odd. 132HP @ 6400, 127ft-lb TQ @ 2500 & 4500 rpm. It was a Mustang Dyno. No clue what the AFR was. Could the winter grade fuel be the issue? The outside temp was around 8deg.

02-02-2013, 09:54 PM	#9
DarkCard Senior Member Join Date: Oct 2012 Drives: Asphalt Scion Frs 6MT Location: New York Posts: 1,044 Thanks: 101 Thanked 564 Times in 286 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	Mustang Dynos are called "Heartbreakers" for a reason. They're low reading dynos. __________________ DarkCard Photography

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01-31-2013, 11:34 PM	#3
Jesse@JDLAutodesign Join Date: Aug 2012 Drives: 2013 Raven Black FRS Location: Phx AZ Posts: 601 Thanks: 56 Thanked 680 Times in 258 Posts Mentioned: 22 Post(s) Tagged: 3 Thread(s)	Some mustangs read low...i wouldn't worry.

02-02-2013, 08:48 PM	#4
kilrb Member Join Date: Feb 2013 Drives: '13 Black BRZ Location: Kansas City Posts: 68 Thanks: 5 Thanked 13 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Mustang dyno's usually do read lower than Dynojets. From my LS1 Vette days, I remember cars getting 20 or 30whp less on a 400whp car. Don't know if its proportional or not, but I wouldn't be surprised to see that number on a Mustang dyno.

02-02-2013, 09:28 PM	#5
fistpoint Senior Member Join Date: Dec 2011 Drives: Supercharged Golf Cart Location: Estados Unitos Posts: 1,196 Thanks: 75 Thanked 364 Times in 206 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Just curious as I know nothing of these things...but if this Mustang system is known for giving low numbers, doesn't that equate to the system being basically worthless? What would be the point of having a system designed to measure HP that always measures lower than it really is? It's like using a broken thermometer to check your temperature.

02-02-2013, 09:38 PM	#6
AVOturboworld Join Date: Jan 2012 Drives: 2013 "AVO Orange" FR-S Location: Seattle, WA Posts: 1,067 Thanks: 69 Thanked 2,277 Times in 636 Posts Mentioned: 108 Post(s) Tagged: 2 Thread(s)	It's basically worthless if you want to have numbers to brag about, yes. But that's not the purpose of a dyno. It's a measuring stick to see if your tuning is doing something or not. It doesn't matter if the baseline is 120 or 180, the idea is to measure the gain from that baseline.

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