Vacuum modulated vs PCM-controlled line pressures

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Apr 16, 2006 | 02:24 AM

thunder550

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High on diesel fumes

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From: Phoenix, AZ

Vacuum modulated vs PCM-controlled line pressures

Pros/cons of each?

Apr 16, 2006 | 03:26 AM

white1

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From: Sittin on jackstands

I just got my vac modulated FLT in yesterday, and can say, I am completely happy with it. To hell with computers controlling everything

Apr 16, 2006 | 09:56 AM

goshawk23

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From: Ocean Springs, MS

i had the vac modulator on my last built tranny. i liked it but that tranny never had o/d so the new tranny got built without it. i can tell no difference between the two.

Apr 16, 2006 | 12:13 PM

04Denali

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From: Stockton, CA

Had my tranny built by Rock On transmissions and He highly suggested that I go with a vacuum modulator.
Mark

Apr 16, 2006 | 03:22 PM

99Silver6.0

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From: Olathe, Kansas

I dont want my PCM to control much of the tranny functions. Line pressure being one of the higher ups on that list. My friend has a built unit in his truck with PWM and mine is vac-mod. My shifts feel alot stronger and quicker both at light throttle and WOT. IMO PWM is a big factor in tranny fryage.