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Dyno chart smoothing? Does it make a difference? See for yourself...

18545 Views 66 Replies 27 Participants Last post by  sjsche
10
I read comments on here once in a while about how FocusSport likes to use a lot of smoothing on their dyno charts. Or how there is a big difference in smoothing from 3 to 5. Or from 1 to 5. Or from...you get the idea.

So why don't we just take a look for ourselves?

First example - Paul Haskew's 2.3 Turbo Duratec

Smoothing set at 1 - The LOWEST setting on dynojet software



Smoothing set at 2



Smothing set at 3



Smoothing set at 4



Smoothing set at 5 - The HIGHEST setting on dynojet software





Second example - FocusSport 2.3 Duratec project car

Smoothing set at 1 - The LOWEST setting on dynojet software



Smoothing set at 2



Smoothing set at 3



Smoothing set at 4



Smoothing set at 5 - The HIGHEST setting on dynojet software




Horsepower and Torque can change slightly with the different settings, but its not anything major. A dyno chart from a well sorted car with a good hardware and software package will look good at any setting. A chart from a car with a not so well sorted hardware and software package will look like it needs help at any setting.

So there it is, laid out flat for you to see. Now you can see for yourself how much of a difference each setting makes.
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Since we have a dyno thread here, I have a question. How does gearing figure in to dyno measurement? I'm taking my car to a dyno day this weekend, and was wondering if I should swap my Rotas and tall Azenis for the 1" shorter stock stuff. Will it make a noticeable difference?
MarcyMotorsport said:
Tires and wheels will have a small effect on the numbers, but I would suggest running what you use the most.
Sounds good. Since the summer tires make my gearing noticably taller, I was worried they might also lower my measured power significantly. But I must admit I'm not too clear on the math involved.

Plus I want to look cool for the dyno day :cool: :p
Hopefully Mr. Marcy can answer another question for me. A talk I had with a shop owner leads me to believe Walter may be specifically well-qualified for it.

I've always heard that, for instance, a Mustang dyno will read lower than a Dynojet dyno, and that Dynojet is generally the standard of measurement. How does a Dynocom weigh in?
smokethebear said:
What's J&S??
A J&S Safeguard is a very sophisticated knock sensor. It keeps an eye on detonation and allows you to run more aggressive settings without worrying about your engine exploding. Very helpful for a turbo engine if you're not 100% trusting of your tuning.

Also, I don't think I've shown this off in Duratec Tuning yet, so here it is.



Smooth. :evilgrin:
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FocusSportVP said:
^^^^ Well, lets see how the different levels of smoothing apply to this Dynocom then, if they have that feature. Please post up. :)
No idea. The shop only had it working for a few weeks. I was asking Walter about Dynocom earlier because the shop owner mentioned that he was involved with the company.
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