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Datalog Boost

Speedy!

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#41
That's probably right in the air you're describing. My 2.72 will make almost 18psi in good air.

However, I keep saying to not look just at the "boost" but the actual aircharge. What's it say? That's the real measure of how much air is going in to the cylinder and what all the tuning is based on. To cross check "boost" you can also look at PRatio. 2.17 is around 17psi.
 


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jonx96

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Thread Starter #42
That's probably right in the air you're describing. My 2.72 will make almost 18psi in good air.

However, I keep saying to not look just at the "boost" but the actual aircharge. What's it say? That's the real measure of how much air is going in to the cylinder and what all the tuning is based on. To cross check "boost" you can also look at PRatio. 2.17 is around 17psi.
@vortecd @16GoManGoHC2
I just did a pull the car read 17psi. DA is +850
Speedy- I just looked at pRatio and it reads 2.190 for the pull I just did. I'll have to find a good PRatio calculator
I'll have to add the Air Charge PID I thought I had it but I guess not.
Any way thanks for all of your guys feedback. The track will tell a week from today.
1616871094076.png
 


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jonx96

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Thread Starter #43
What should air charge be? I just added the PID.
 


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#44
That all matches up.

You double check the pulley size?
 


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#45
Totally off topic: Throttle position sensor percentage is showing 127%. How is that possible? Or is TP limited to less than the full possble so it registers as a TP vs allowed or OEM maximum?

Years ago when we were tuning the GTO TPS gave us some problems at first for some reason and would throw codes.
 


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#46
Normal
 


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jonx96

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Thread Starter #47
That all matches up.

You double check the pulley size?
Yep checked it a few times before install.
 


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Speedy!

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#48
Your supercharger may just be a bit more efficient than average, aircharge will tell us for sure because boost is really a measure of restriction.
 


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Thread Starter #49
That's probably right in the air you're describing. My 2.72 will make almost 18psi in good air.

However, I keep saying to not look just at the "boost" but the actual aircharge. What's it say? That's the real measure of how much air is going in to the cylinder and what all the tuning is based on. To cross check "boost" you can also look at PRatio. 2.17 is around 17psi.
Here is air charge. Is that low?
1617051715386.png
 


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#50
It's not low, but mine will see 2000+ in good air as a reference point. I'd say things are normal.
 


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jonx96

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Thread Starter #51
It's not low, but mine will see 2000+ in good air as a reference point. I'd say things are normal.
Sounds good da is around 800 so pretty good air. Thanks for the feed back.
 




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