Bullet Performance supercharger by Mercury Performance

[Jordo!]

Originally Posted by Coheed

I claim BS. A mustang or a dynojet reads the same, regardless of where on the planet you are located. If you guys can't get a dynojet, then it sucks to be you :P

Dynojet and mustang are like the gold standards. And everyone knows dynapack reads high, so neener neener.

Eh... you can tweak the settings on a mustang.

Dynojets are pretty much as consistent as it gets tho'. I generally treat SAE corrected dynojet numbers as "truth" (although, for FI cars, STD or uncorrected numbers are more appropriate).

Dynapacks typically read higher, but they too can be tweaked.

[Jordo!]

Originally Posted by ultra

Forgive me, Australia but his immediately popped into mind:

The Mad Max V8 Interceptor is my dream car

Oh, is that a twin screw? Even better! Lysholm blower FTW!

[MANDALAY]

Originally Posted by Coheed

Exactly right. In a way, a hp is a hp. It would be ridiculous if 1/4 mile times were affected because every country made up their own length of track. Imagine running 11.50 in USA, and 11.80 in AU, and 10.0 in EU. That's how I feel dyno numbers can be a lot of times.

At the end of the day, 550lb moving 1ft/sec is 1 hp. With a fixed measurement like that, why are some dynos reading low, and others reading high? It's like buying calculators in different countries, plugging in the same numbers and equations, and getting a different result. What a joke.

BS to you to.
You said Thanks to WTF which he just said what i said. Your dyno's read higher.

[Coheed]

Originally Posted by MANDALAY

BS to you to.
You said Thanks to WTF which he just said what i said. Your dyno's read higher.

dynojets read correct hp numbers imho. Simple inertial dyno. No eddy current generators or strange algorithms to measure torque output, then calculate it into hp.

Steady state inertial dynos are as simple and consistent as it gets. Realistically, do you really think that ANY engine is going to lose more than 25% of its power through the drivetrain? Perhaps perception should be altered to reflect that your dynos just read too low? Like was said before though, its a tuning tool. It's a tool for measuring against a benchmark. That's what he said that I "thanked" him for.

Doesn't anyone down under have a dynojet?

[serialk11r]

Originally Posted by Coheed

Steady state inertial dynos are as simple and consistent as it gets. Realistically, do you really think that ANY engine is going to lose more than 25% of its power through the drivetrain? Perhaps perception should be altered to reflect that your dynos just read too low?

If it bothers you that much, yea I think the higher reading dynos are the ones that should be "trusted". In fact, it'd be best to take the tires out of the equation too.

The mechanical efficiency of the drivetrain I read is usually around 90%, maybe a little better. Throw in tires, you have rolling resistance to deal with, and that takes off something on the order of a few percent, depending on the gear, weight distribution of car, whether or not the front wheels are spinning, etc. But you can change the type of tire, change the air pressure, and change this significantly.

IMO, you either have the rollers connected to each other and have the wheels all spinning (this simulates road conditions vaguely), or you go for the hubs if you can't directly dyno the engine. Anything in between is going to give you a number that's both further from the "truth" and not useful for determining real world conditions. But the question is, do you really need to know the number to brag?

[Coheed]

The only issue with hub dynos are that they read torque output. They use the RPM signal to determine hp output. There's too much wasted space on the internet comparing dyno numbers against different dynos. lol.

[Gshoxx]

Hey unleashed did you smoke your tAil lites? Coz i got same color n dont know if smokin it will look good.

[MANDALAY]

Im all for Dyno's being a very usefull tuning tool.

Everytime i go on the SAME dyno we compare previous readings .

Dyno Dynamics is the most prevalent dyno here and they tried to sell in the USA but wasnt accepted as lower figures disappoint both the customer and the shop.

As soon as someone does a dyno over here on a stock car and compares it to a dynojet you wont understand what im talking about.

[Coheed]

Originally Posted by MANDALAY

Im all for Dyno's being a very usefull tuning tool.

Everytime i go on the SAME dyno we compare previous readings .

Dyno Dynamics is the most prevalent dyno here and they tried to sell in the USA but wasnt accepted as lower figures disappoint both the customer and the shop.

As soon as someone does a dyno over here on a stock car and compares it to a dynojet you wont understand what im talking about.

Well the dynojets here are giving ~165whp.

[os86]

FFS... can we start a new thread about the different dynos all over the world and stop whoring this thread..

Much appreciated.

Lets keep this thread focused on the Bullet SC

[Visconti]

I'm sry if I missed this but all this talk about dynos makes me wonder if I over looked a dynoplot ....

Do you guys have one yet?

-John

[sirus]

I don't think anything will be released until Friday (in Aust) for WTAC. Atleast that's what they seem to want to happen.

We'll just have to wait until then

[Don@Accelerated]

Cool. Interested to see what she does.

-Don

[Jeff86]

Definitely in for results

... and in for does the hood close and no touch with engine movement? stronger motor mounts needed?