Engine load as it pertains to boost

[MikeyPee]

On the NGauge I only see load as a percentage. I know the SCT folks correlate a load of 1.35-1.45 as 8-10 psi. What's the NGauge equivalent for 8-10 psi? I think there are two load signals available as well

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[3beeps]

On the NGauge I only see load as a percentage. I know the SCT folks correlate a load of 1.35-1.45 as 8-10 psi. What's the NGauge equivalent for 8-10 psi? I think there are two load signals available as well

Not knowledgeable enough to answer your question, but I have a solution lol. Sounds like you need a Boost Box in your life. http://www.lundracing.com/lund-racing-boost-box/

 

[MikeyPee]

Not knowledgeable enough to answer your question, but I have a solution lol. Sounds like you need a Boost Box in your life. http://www.lundracing.com/lund-racing-boost-box/

Yes sir. It's on the list; just wanted something in the interim :cheers:

 

[christian]

Been hearing a lot about this too lately. At 7300 with my 3.48, im seeing 2.35....shes definitely pulling super hard!

 

[whatsup62]

Here is some condensed info off of one of my last logs. Lund, Ngauge, Boost+

 

[Tommy V]

How accurate is that i see wheir1.808 of load comes to 9.9 psi boost then a little higher in the rpm the same 1.808 of load is 11.4 psi of boost.So does it use load and rpm for this formula?

 

[GTBOB]

What's the significance of knowing the "load as a fraction" while data logging? What's good and what's bad?

 

[markmurfie]

Engine load will not be directly relate to boost where when one goes up so does the other.

Load as a fraction and load as a percentage are you absolute load. One just isn't multiplied by 100% and left as the result of the fraction (air mass)/1.183(air mass)*cylinder displacement.

Air mass is the weight of air that got into the cylinder before the intake valve closed. Boost would be a function of MAF and what didn't get into the cylinder and remained in the manifold. Because the coyote doesn't have a MAP sensor this would be logged as inferred MAP. Not sure if the Lund ngauge had a manifold pressure gauge I would need to look but that's what you would want to be looking at.

 

[dubster99]

Engine load will not be directly relate to boost where when one goes up so does the other.

Load as a fraction and load as a percentage are you absolute load. One just isn't multiplied by 100% and left as the result of the fraction (air mass)/1.183(air mass)*cylinder displacement.

Air mass is the weight of air that got into the cylinder before the intake valve closed. Boost would be a function of MAF and what didn't get into the cylinder and remained in the manifold. Because the coyote doesn't have a MAP sensor this would be logged as inferred MAP. Not sure if the Lund ngauge had a manifold pressure gauge I would need to look but that's what you would want to be looking at.

From what I understand, load will also give a different reading dependent on what gear you are in.

I'm at 1.988 at the top of 4th gear around 7400-7500.

 

[ProChargerTECH]

If you want to know load, log your load....
If you want to know boost, log boost with an outside source.
(and one that does an offset for BARO)

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