Join Date: Apr 2012
Location: Stratford, Ontario
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Going to any single shot injector will give a little bit of economy, but you need tunes to run them, and gauges... altogether thats a 2000$ mod to be safe.
But working properly, 7.3's were designed to start unassisted ( not plugged in), a feat I regularily accomplish every winter.
Injector diagnostics suck, they are basically process of elimination in a lot of cases. You need to monitor/check everything else before throwing money at injectors. ICP values and duty cycle while cranking. CCT test, compression test, run with valve covers off to compare oil spouting, etc.
Please check out my 7.3 Enthusiast Facebook group! All are welcome! LINKY