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Message: <blockquote data-quote="adamv7010" data-source="post: 1264945" data-attributes="member: 19387">Recently got into mustangs...but not to automotive performance. Recently bought an 03 gt with a leaking intake manifold...I replaced that with a new frpp manifold. Before the swap I had a condition where it would stumble at idle a little, then during wot pulls it would act as if it were starving for fuel. I really figured the leak was soaking a plug or two causing a misfire. I blew the plug bores out with air when I had the Mani off and got some liquid out of a couple.I put it all back together and everything went smoothly. I replaced the gasket on the IAC simply because the ford store didn't have a valve on the shelf. Long story short, with the new intake and dry plugs, I've still got a stumble at idle, which according to my live wire, is around 680-710rpm. Anyone wanna guide me to a starting point? Are these 2v coils known for breaking up?I have several k$ worth of diagnostic tools, but I don't have an IDS, so I can view most anything, just can't flash. Any advice is welcomed. ThanksAdamsent while driving recklessly</blockquote>