So I have 97 1 ton 7.3 banks 6 position all sensors new except tps and mass air flow builds boost around 9 pounds new fuel pump IHOP is operating correctly with chip on stock it runs ok after I cut muffler off anytime I run a tune it coughs and sputters around 2300 rpms sometimes a little lower will clear up a little at 3000 but wont go any higher I unbolted downpipe and it ran alot better I'm about to my end love this truck more than my cummins but cant seem to get her lined out
same situation on my 95. runs fine stock, put a tune on it and she kicks real hard. recently its started doing it on a stock tune. time to start doing some live data and find whats going on with my forscan
A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!