Low rpm stutter under boost - Ford Mustang Forum
 
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post #1 of 3 (permalink) Old 4 Weeks Ago Thread Starter
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Low rpm stutter under boost

I have an intermittent stutter under boost (before the automatic trans downshifts) sometimes. Roush sent an update for the pcm. I installed it, and it helped a lot, but it still does it some. I connected the ford computer, and watched to see if a single cylinder was misfiring, but it was random cylinders each time when it did happen. I'm wondering if I need to tighten the spark plug gap some. (I set them to the recommended setting when I replaced them with the blower kit) any thoughts?

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post #2 of 3 (permalink) Old 4 Weeks Ago
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Not unusual with Roush....they are not known for the same level of expertise in the consumer market as they show in the racing world. IMHO, get it to a tuner/dyno who can actually tune the engine correctly..... what it's showing (from your posting) is there is potential for significant engine damage to occur if not corrected based upon your description


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post #3 of 3 (permalink) Old 4 Weeks Ago Thread Starter
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Quote:
Originally Posted by Beechkid View Post
Not unusual with Roush....they are not known for the same level of expertise in the consumer market as they show in the racing world. IMHO, get it to a tuner/dyno who can actually tune the engine correctly..... what it's showing (from your posting) is there is potential for significant engine damage to occur if not corrected based upon your description
Sounds smart. Thanks for the input!
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