JB4 Tune (Burger Motorsports)

Psykostevo

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I tend to see 18-19psi on mine in stock configuration. This is on low octane fuel and @ 5,200ft elevation, reading from an auto agent 2. Not trying to disagree, but curious if there is maybe a different PSI sensor that the auto agent is pulling from? I've pulled up MAP and it tends to follow based on atmospheric pressure to match up to 20psi spikes.

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Peak boost will vary based on OAR (Octane Adjustment Ratio). If the car is knock free on your gasoline it will run up to about 19psi peak (not constant). But it you have a low OAR rating it will usually target lower torque output and use the reduced tables for about 14-15psi.

You won’t be seeing that 19.9psi at redline on the stock tune. But you can see that and more with a tune (whether from JB4 or ECU flash)



 

ColoRanger

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Peak boost will vary based on OAR (Octane Adjustment Ratio). If the car is knock free on your gasoline it will run up to about 19psi peak (not constant). But it you have a low OAR rating it will usually target lower torque output and use the reduced tables for about 14-15psi.

You won’t be seeing that 19.9psi at redline on the stock tune. But you can see that and more with a tune (whether from JB4 or ECU flash)
Fair enough, I figure with the low octane fuel I run 85 octane the boost it sees is pretty good. I just didn’t know if maybe it was reading prior to cac showing no pressure loss maybe. It’ll hold 17-18 pretty decent on good pulls. But as you have stated in your other posts, regarding the throttle being closed for “nanny” features you can clearly see it when monitoring the throttle position %, interesting to see.

F80E50F8-0D87-4CBA-9548-174D8C0DACBD.png
 

jlmotox

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any updates?
 

CharChar

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:lipssealed:
 

Rinn69

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FlRanger

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Still waiting for the updated tune.
 

Grimlock

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Do we know if this can fix the skip shifting? Im thinking about grabbing this.
 











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