Trans shift points, pressures - Power Hungry Performance Forum

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Trans shift points, pressures

F.U. Chip & FU2 Flex Chip (DISCONTINUED) (Disabled)
If you have a question or comment relating the new F.U. Chip or FU2 Flex Chip, post it here.

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Wed, July 27th, 2011, 10:28 PM

cleatus12r cleatus12r is offline

F Your Yankee Blue Jeans

Join Date: Jan 2009

Location: Somewhere in Montana

Posts: 2,665

The "shoosh" you're hearing is from the turbocharger. The engine RPM is dropping quicker and the drive pressure on the turbine side of the turbo goes away thus causing the boost pressure to come back out through the compressor inlet. No biggie.

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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.

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