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454 vortex engine while driving it sputtered for a little Jim 5-17-16  
Any ideas why while driving down the highway it sputtered for a little while like 30 seconds and then all was good the rest of the trip ?
Re: 454 vortex engine while driving it sputtered for a little Bubba The Bus Tech 5-18-16  
With out actually working on it myself I am going to guess

The emission controls do a test every so often where they open the EGR, Canister purge, run the engine excessive lean and rich, and half a dozen other tests just to see if they work to specification.

Usually it does it when you are at heavy throttle and won't notice but not allways.

In other words don't worry unless it happens on a reglar bassis
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