[dj128]

On occasion, I've noticed higher than advertised boost (15.7 psi as measured by P3 vent gauge) while running JB4 on map 1 with FMIC, DCI, exhaust (no downpipes). Usually it stays in the 14 range, but even that is higher than advertised. Any thoughts? Should I try the adjustable map 5?

[Jeff@TopGearSolutions]

Without knowing the RPM of where the boost is we cant offer much advice but I'm sure its fine.

You can run up to 17 psi even 18 PSI in the mid-range before 5000 RPM.

Try map 5 if you want to remain conservative.

Logs always help.

[Mike@N54Tuning.com]

Expect to see peak-recall 1-2psi higher if you're recording shifts. If you're wondering about your boost levels the best thing to do is a datalog to see how they look throughout the power range.

Mike

[BrianMN]

Originally Posted by Mike@N54Tuning.com

Expect to see peak-recall 1-2psi higher if you're recording shifts. If you're wondering about your boost levels the best thing to do is a datalog to see how they look throughout the power range.

Mike

Post TB Manifold pressure (as the OP has) is going to be 1-2psi from a shift spike?

[geterdone]

I have the same thing happen. Confusing???

[TwinSnails]

I'm seeing the same thing as well. I sent terry a few logs and he said everything is looking good.