It’s usually the obvious answer

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Goatpoker

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Car was running rough all of a sudden. Idle was clean, mid-rpm was clean but off idle and lugging felt like it was missing.
Pulled the Holley data logs. Couldn’t see anything suspect.
All the ECU connectors were tight
Hmm, what else could it be? LOL
 

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Goatpoker said:
Car was running rough all of a sudden. Idle was clean, mid-rpm was clean but off idle and lugging felt like it was missing.
Pulled the Holley data logs. Couldn’t see anything suspect.
All the ECU connectors were tight
Hmm, what else could it be? LOL
Click to expand...
Sorta had that on my Jeep. Didn't realize that the boots on LS plug wires can move independently of the wire/connector. Found it with my hand while it was running (sounded like an exhaust leak). That hurt.
 
Rockwood said:
Sorta had that on my Jeep. Didn't realize that the boots on LS plug wires can move independently of the wire/connector. Found it with my hand while it was running (sounded like an exhaust leak). That hurt.
Click to expand...
I found an ignition short to chassis on my old VW rail with something more sensitive than my finger…. 🍆
 
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