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    Help! After PI swap, runs great cold, chokes as it warms

    This is somewhat of a duplicate post. I've greatly enhanced my detail and changed the thread title to be more accurate. Here’s what’s happening: I performed a PI intake swap with non-PI heads on my 98 Mustang GT with 58,000 miles. There is a faded sticker in the front of the engine bay...
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    New PI Swap, good cold idle, bad hot idle

    New PI Swap, runs great cold and bad warm Hello All, New member here... Thought I should say hello before I look for assistance, but...:D I just did a PI intake swap on a 98 GT. Fired it up and all is well... no leaks good strong idle, nice throaty exhaust tone and good response. I...