[Rik]

Hi guys I took my ZL1 to the local dyno to see what it was putting out standard from the factory. I was disappointed with the results tbo it put out 480 bhp to the wheels but that is on a mustang dyno and not a dynojet and it was also 110 degrees in the shop that day so it was pulling timing. If anyone knows the mustang dyno it usually gives a 15% lower figure than a dyno jet as it is a load bearing dyno and is more realistic so in theory it would of been 552bhp on a dyno jet. Has anyone else had there car on a dyno yet ?

[NicD]

Had two stock ones on the dyno so far, the A10 made 530 rwhp and the M6 made 545 rwhp on a standard Dynojet dyno. Now keep in mind we have crap gas out here in AZ with hot dry air so we kind of suck compared to the rest of the US.

[Rik]

I'm in south Texas very humid and hot here so it doesn't help I have the A10 so I'm not a million miles off most people's. I'm going back in a few days to try again once it's cooler.

[Jinkz]

https://youtu.be/5qjKSBTNil4

My m6 on a dyno jet

[Chevy71]

The dyno jet has load as well and post realistic numbers.. the mustang dyno seems to always read low numbers though. What air temps did your car see while making the pass, and did he let it cool down significantly? I've not seen a ZL1 post numbers in the 400's yet.. I'm sure yours was due to rare circumstances

[NicD]

Originally Posted by Chevy71

The dyno jet has load as well and post realistic numbers.. the mustang dyno seems to always read low numbers though. What air temps did your car see while making the pass, and did he let it cool down significantly? I've not seen a ZL1 post numbers in the 400's yet.. I'm sure yours was due to rare circumstances

The problem with a mustang dyno is that it's up to the operator to make sure it's configured correctly. Around these parts you have mustang dyno guys that jack up the numbers to show them gains and before you know it the damn thing is spitting out numbers quite a bit higher than a standard dynojet. Either way it's a tuning tool and you can't really read much into the numbers especially on a user configurable dyno.

[Rik]

Originally Posted by Chevy71

The dyno jet has load as well and post realistic numbers.. the mustang dyno seems to always read low numbers though. What air temps did your car see while making the pass, and did he let it cool down significantly? I've not seen a ZL1 post numbers in the 400's yet.. I'm sure yours was due to rare circumstances

All I know was it was 110 in the shop that day and I don't think there was an adequate size fan to deal with the heat tbo. We tried to let it cool down but due to the high temp it wasn't ideal. The operator did point out to me it's really a tuning dyno and the numbers always come in low he did use an conversion tool to show what a dynojet would of read and it came out at 552 Rwhp. He has offered me another few runs for free as he feels it has more to give under better conditions. I would post some pictures but I have no idea how to lol

[Chevy71]

Originally Posted by Rik

All I know was it was 110 in the shop that day and I don't think there was an adequate size fan to deal with the heat tbo. We tried to let it cool down but due to the high temp it wasn't ideal. The operator did point out to me it's really a tuning dyno and the numbers always come in low he did use an conversion tool to show what a dynojet would of read and it came out at 552 Rwhp. He has offered me another few runs for free as he feels it has more to give under better conditions. I would post some pictures but I have no idea how to lol

The 110 and lack of air flow will certainly hurt your number, especially if your IAT's where 140 or up. Your car stock has more in it. I'm not sure how he is telling you he has a conversion chart for a dynojet because most of dynojet dyno s you set the load based on the application. He would have no way to know what settings where in to do that. All dyno's are just a tool for tuning and are never the show all, tell all stat when it comes to speed, power, or track time. So take it with a grain of salt, its relative. Your car is an awesome car man, and has the ability to really put down some impressive numbers. I don't know what part of TX you're in, but they have a handful of really good places to go. That is one thing I miss about living down there, lots of resources in the car world!

[Chevy71]

Originally Posted by NicD

The problem with a mustang dyno is that it's up to the operator to make sure it's configured correctly. Around these parts you have mustang dyno guys that jack up the numbers to show them gains and before you know it the damn thing is spitting out numbers quite a bit higher than a standard dynojet. Either way it's a tuning tool and you can't really read much into the numbers especially on a user configurable dyno.

I agree. The dyno operator has to ensure it's configured for the application for sure..

[Rik]

Originally Posted by Chevy71

The 110 and lack of air flow will certainly hurt your number, especially if your IAT's where 140 or up. Your car stock has more in it. I'm not sure how he is telling you he has a conversion chart for a dynojet because most of dynojet dyno s you set the load based on the application. He would have no way to know what settings where in to do that. All dyno's are just a tool for tuning and are never the show all, tell all stat when it comes to speed, power, or track time. So take it with a grain of salt, its relative. Your car is an awesome car man, and has the ability to really put down some impressive numbers. I don't know what part of TX you're in, but they have a handful of really good places to go. That is one thing I miss about living down there, lots of resources in the car world!

I think it's more of an application that approximates the RWHP a dyno jet would show and it appears it was like 1/2 hp out so although I don't understand how it works it appears he wasn't far out. I hope to get better figures next go of which I'll post on here once done. I may add a roto-fab and have a map done shortly after and see what that gets me to. I did consider Hennessy but it will be a generic map and not a custom one tailored to the vehicle once again idk if this will make much difference between the 2 options

[KaBoom1701]

Seems low....

Have them run the dyno at 6am. Lol

Every time I go to Vegas or Phx no one works past noon anyways due to the heat.

[VAZL1]

Originally Posted by Jinkz

https://youtu.be/5qjKSBTNil4

My m6 on a dyno jet

That's more like it!!!

[NicD]

Originally Posted by KaBoom1701

Seems low....

Have them run the dyno at 6am. Lol

Every time I go to Vegas or Phx no one works past noon anyways due to the heat.

I wish that was the case, you'll find me on the dyno in 115 degree temps at 4:00 in August.

[Zeke.Malvo]

There is absolutely no way to accurately calculate a Mustang Dyno reading to a DynoJet reading.

A Mustang Dyno is definitely the better tuning tool of the two. The Mustang Dyno is a load based dyno, the only drawback is that there are a ton of variables that must be input by the dyno operator.

A DynoJet uses a fixed weight drum that reads HP. It's a much more consistent reading, with no variables to input other that weather correction factor (SAE, STD), but it's not as accurate for tuning due to the load being fixed.

For Internet bench racing, DynoJets are better due to their consistency. But there are still variables that never get accounted for (tire air pressure, wheel/tire weight, how tightly the vehicle is strapped down, etc.)