hot 2 turn fuel up? IH

Take the cover off the top of the injector pump, has four screws. Under the cover you will see a screw with a screw driver head with a lock nut and a metal tab bent over the lock nut. You have to back that screw out. You need to put it on a dyno to see how much hp you are turning. I think factory was around 125 hp but know some were turned up to 160 hp. My 1466, backing the screw out a half round gave it about 15-20 hp. It was factory 145 hp and I have it running around 160 hp. but with a load the engine temp runns a little warmer. With out a dyno you could be asking for trouble. Going over 20 hp. ( just my oppion ) is just asking for a melt down.
 

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