For starters I have a 2014 z51 M7 with
TSP 1-7/8" LT headers/ 3" Catless X pipe
AFE Intake
Tony Mamo ported Throttle body
Edgyvette Ported intake manifold
DSX Flex Fuel sensor
Tuned 93/e85

So I took the car to get tuned and It doesn't feel much different performance wise. The numbers is what really got me afterwards (E85 415whp and 443 TQ. MAX) The car was on a Md150 AWD Mustang Dyno. So my question is are these numbers Normal on a Mustang dyno? Or is this a super conservative tune? Just feels like the car should be a lot faster than what it is. Thanks for the help in Advance

 

Those numbers look fine! I’m about exact setup as you and pulled about same numbers. Don’t forget that mustang is a bit lower than a dynojet Dyno. I’m surprised you can’t feel the difference!!!! That’s about a 50/60 rwhp gain!!! Enjoy it man!

 

The mustang dyno is about 15% lower than a dynojet. Robert

 

Thank you for the feed back. Really appreciate it.

 

If you really want to see if there's a difference take it to the track. Never trust how it feels.

 

Dyno is just a tool, the 15% lower number is false, that’s just crazy. So many variables involved saying a mustang dyno reads 15% lower then a DynoJet is silly talk.

Actually if you want to “play games” with dyno numbers and manipulate them a mustang gives you more control to do so.

Are these numbers loaded and corrected? If so what correction factor was used? SAE? STD? Smoothing factor? What was the DA and air temp in the shop? Heat soaked pulls or just warmed up? You can make them say whatever you want man, hopefully you have a shop that explains all this to you. Where is the baseline graph? Did they sent you the file?

Nothing wrong with Mustang dynos or DynoJets as long as you understand it’s a simple measuring tool, now you have numbers to mods and can compare numbers to mods to times on the track or street.

If one dyno manufacture had a product that was 15% higher it low automatically and consistently they wouldn’t be in business long. Enjoy what you built and get some times to out with those numbers and mods!!🇺🇸

 

You are correct a Dyno is just a tool , the track will be the ultimate test but It's a WELL KNOWN fact that a Mustang Dyno on the same day, same DA and same correction factors will give you readings that are 15% lower than a Dyno Jet .......

This is the reason why I go to the track, Anyone can manipulate the dyno numbers but the track does not lie . I only make one mod at a time , log all the ECM data including DA ETC and log the times and MPH produced to see what gains if any were produced ... ( ported throttle body on a NA car is a feel good mod ) . Ported manifold is worth 20 HP and headers and a tune are good for 30 HP

Marquis. depending on how well your tune was done and what was adjusted such as torque management etc you can be sure that in street trim you are driving a 11.5 or lower , 118 to 120 MPH bad *** car ....

Dave

 

^^^^^^this^^^^^

 

I think he feels it Gary ... it when you get use to the power is what feeds our addiction to do more lol lol

Dave

 

73 DBG make sure you read post # 4 in this thread .... side by side Mustang and Dyno jet in the same building , I guess if we follow your logic then Mustang should be going out of business lol lol

https://www.corvetteforum.com/forums...o-dynojet.html

Dave

 

And another debate on which dyno is better .....and why a mustang reads lower
There is no clear winner... that is unless you are looking for a Bragging HP number , 30 hp gain on a mustang is the same as a 30 hp gain on a Dyno Jet ...

But please don't say that a Mustang does not read lower than a Dynojet unless you do your homework .....

http://forums.mustangworks.com/f12/d...-dynojet-9929/
Dave

 

Above comment is spot on. Why do people post things and it’s obvious they are clueless. Fact are facts....mustang dyno will give you roughly 15% lees hp reading. Which one is right....I really don’t care. My comment was simply if the OP took his car to a shop with a dynojet dyno,he would get a hp reading of another solid 50 hp. But then again the best dyno experts in the world say the same thing so maybe the guy who post that mustang dynos reading less than dynojet dynos is false and rediculous is right???? Lmao. Gimme a break.

 

Lots of good ****, but the 15% number is just silly man, I’ve used both and actually had higher numbers on a mustang, again way easier to play around with a mustang then a DynoJet, if 15% was even remotely true people would be out of business, that’s 100+ horsepower in certain applications nobody would tolerate that, the mustang dyno reads 15% lower was made up by guys who used one and got told those rumors when their car didn’t make what was expected. Sometimes it’s the shop with lazy tuners and sometimes it’s the customers who go on forums and people tell them nonsense like this.

Again I’ve used both and went and made runs using my dragy, I hit times that were spot on for the power made, if the 15% thing had a merit I wouldn’t have been close, at the power levels these car make it’s just silly to think one dyno brand reads 15% lower. My vette makes low 900’s wheel if the 15% number was applied your taking 135+ hp difference which would be extremely noticeable on the street or track when timed. Dudes would be missing their **** over that. Now a 10-20hp difference sure you could see that from dyno to dyno but triple digits no way man. Lots a internet myths and rumors is all that is.

 

Ok 73DBG ... you win .... everybody else is wrong

Just trying to stomp out internet urban legends, please join me in my quest

Dave

 

Your vette needs washed.

 

Just throwing out real info, not junk nonsense is all

OP this video has some good info on all the dyno types and how they work, it’s a good watch and better then taking my word or Dave and his “everyone else” 🤣


honestly don’t care what you do man....figured I’d help the OP out so he’s not running around talking about how his car makes 15% more power because the dyno he used🙄

 

Home work is done little buddy....holla at me when you build a fast car and take it to a dyno....until then🤫

 

all built by me One guy making a statement that both dynos are the same ...Hmmmmmm then I guess that makes you an expert and that makes it a fact ….I am sorry …...

I have had plenty of fast cars and dyno runs and plenty of fast offshore boats " LITTLE BUDDY " ….. you are not the only one …….all built by me and not someone I paid to build them ….....

And I am very happy with the power level of my current car ……

Also reading is "Fundamental" here in the forum as the OP had a Mustang Dyno and was asking why his numbers were low , he is not walking around saying they are 15 % higher ….

Like I said , you win …. I have nothing to prove to you ….The OP will make his choice …...

Dave

 

Well I’ll at least provide actual real world data for OP not just internet rumor and the use of “everyone knows” type ****....little buddy 😉 this is how we get these stupid myths....”everyone knows mustangs dynos read 15% lower bullshit” and it spreads like wildfire unfortunately. Damn near any two dynos even if the same make aren’t going to have identical numbers. Had you said 15HP lower that’s at least somewhat possible....but 15% just shows how much you don’t know and have no clue about so why tell this man some nonsense line that?

Dragy run on a C6z making 840whp loaded and SAE corrected video and graph below, dragy and Vbox have lots of data on damn near everything worth measuring. A C6 making mid 800’whp is good for a mid 5 seconds 60-130 time, other factors do play, I was on a a 19” drag radial so no 2nd to 3rd pulls, probably cost .07-.09 alone, 6700 rev limiter maybe another .03-.05 either way a 5.49-5.69 is spot on for mid 800’s on a C6z or any C6. Low to mid 900’s will get you into the low 5’s....5.1-5.3sec shifts definitely matter and can bring the times up or down but the data and graphs reflect all of this.




OP it’s just a tool but if you use the tool wrong or are given bad advice on what the tool does it ends up being a pretty shitty tool. This little $150 device let you put actual real world numbers to the dyno sheets and per round of mods so you know exactly what you gained and how much $ per power or time shaving it got you, highly recommend this thing!

I could care less about the dyno numbers especially if they don’t match up on the street....I’ll take a 800whp dyno sheet that gave me a 5.4 sec run but that would be wrong because it’s just impossible to run that time in a vette with no weight reduction, end of the day the physics must add up, so “15% lower nonsense” is just what it is....nonsense. 🇺🇸

By this 15% lower mustang dyno fairy tale that would mean -126whp so 714whp, not a single C6 no weight reduction would be any where near running mid 5’s, so here’s actual real world data and video that what you were told above is complete and total nonsense.

Btw Dave....stock C7z runs a blistering mid 8 second 60-130mph

 

You guys are starting to sound like AMD and Intel fanboys arguing CPU clock speeds.
In the end I do not see how it matters anywhere but in real life. If 1000 dynojet HP is equal to 850 Mustang HP, they still would run the same on the street.
If they do not, you got other issues.