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Old 04-17-2019, 10:55 AM   #7
Bigdav160
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Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
Re: Difference between Hydroboost units?

I have an Astro unit installed on my truck. I did notice that the accumulator is twice as long on a newer Suburban in the shop.

My guess is that it allows more power applications of the brakes without
hydraulic pressure in an emergency.
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