Review on πͺ Enhanced Performance: P7100 Injection Pump 3K/4K Governor Springs for Cummins '94-98 12V 5.9L - Perfect Compatibility! by Richard Gilbert
They must be semi-mechanical, prone to it
They worked as advertised and do not dump fuel up to 3500rpm on a stock engine. I only cranked it up to 3500 once to get the revs up. installed, but for a DIYer they work great. I also used all 4 springs and it greatly improved high power performance.
Pros
- Good product for its price
Cons
- fragile
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