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-   -   so how is your transition into boost? (https://www.miataturbo.net/megasquirt-18/so-how-your-transition-into-boost-39673/)

WestfieldMX5 09-29-2009 07:22 AM

so how is your transition into boost?
 
Another thing I'm wondering about, how is your transition into boost?
My car isn't boosted yet, so I have no experience with it.
What can I say, I've been out of the miata scene for 5-6 years, so I'm still thinking in Link terms :loser:.
Anyway, the Links used to have (small) problems with transistion into boost (just crossing 0psi). Is this something that occurs on MS installs as well or is this a non-issue?

Zaphod 09-29-2009 07:41 AM

non-issue, smooth and easy, just as if you have an OEM ECU/engine - but with fun attached...

Braineack 09-29-2009 08:50 AM

seamless, like my panties.

Joe Perez 09-29-2009 09:01 AM

In the world of MS, there's no operational difference between <100 kPa and > 100 kPa. They're just two different points on the same scale. Stop thinking in terms of being "in boost" vs. "not in boost," you're in a better world now.

Are you referring to the Link, or the Link Piggyback? (NA or NB?)

gospeed81 09-29-2009 09:07 AM

My boost transition is about like first penetration...every time.

Joe has a very good point...it's really about VE. MS doesn't care about relative vacuum or pressure...it's all about air going into the engine...which is why it's in kPa as well. With a turbocharger...you are realistically seeing a "boost" in pressure below 100kPa...and have a higher volumetric efficiency...which you have to tune for.

I do use a lot of resolution there. Most folks waste a lot of rows on the chart for what is really a simple linear function in boost. Use up more rows on both sides of 100kPa and profit.

https://www.miataturbo.net/forum/t33158/#post386922

WestfieldMX5 09-29-2009 12:32 PM


Originally Posted by Joe Perez (Post 461170)
In the world of MS, there's no operational difference between <100 kPa and > 100 kPa. They're just two different points on the same scale. Stop thinking in terms of being "in boost" vs. "not in boost," you're in a better world now.

Are you referring to the Link, or the Link Piggyback? (NA or NB?)

Referring to full Link.
Glad to hear it's not an issue :)


Originally Posted by gospeed81 (Post 461177)
My boost transition is about like first penetration...every time.

Painful?


Originally Posted by gospeed81 (Post 461177)
My boost transition is about like first penetration...every time.

Joe has a very good point...it's really about VE. MS doesn't care about relative vacuum or pressure...it's all about air going into the engine...which is why it's in kPa as well. With a turbocharger...you are realistically seeing a "boost" in pressure below 100kPa...and have a higher volumetric efficiency...which you have to tune for.

I do use a lot of resolution there. Most folks waste a lot of rows on the chart for what is really a simple linear function in boost. Use up more rows on both sides of 100kPa and profit.

https://www.miataturbo.net/forum/t33158/#post386922

I have 10 rows under 101 and 5 in boost. Should be ok.


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