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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 2058
Experience:  Owner at DJ Wilson
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I have 1999 fl70 with 5.9 24 valve cummins 6 speed manuel

Customer Question

I have 1999 fl70 with 5.9 24 valve cummins 6 speed manuel trans. I'm pulling 36 ft cedar creek 5th wheel. Had fuel lift pump and injector pumped replaced and installed 4" exhaust and k& n air cleaner. Pyrometer never gets higher than 850 degrees even in big hills flat footed. Tag on motor says it's 195 hp. Can 30 to 40 more hp be gotten out of motor with out costing arm and leg ?
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 1 year ago.

Hi I'm Wayne

I will help you with this

When you had injector pump replaced did you upgrade it

did you replace the injectors with larger ones

let me know

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