P.L. Roark Posted 2 hours ago Share Posted 2 hours ago Hey guys I got a 1988 Superliner with an E6-300 with an American Bosch pump on it. I was wondering what do I have to do to get some more power out of it. My dad and I tried to mess with it a little bit (turned the screws out) but we've only been around Robert Bosch pumps and this one is a little different. Any help would be appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/76373-american-bosch-pump-turn-up/ Share on other sites More sharing options...
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