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I used the provided gasket, and nearly 15k miles without issue

Technically, it's afterfire, and my 2017 regularly registered a misfire fault via the FordPass app and had a lot of afterfire, although the afterfire only happened immediately after a fuel fill-up. I've only ever used 93 octane. The misfire started happening occasionally after 15,000 miles...

No, but the high flow cats are causing a CEL. Dealer said it won't hurt anything, but I have the SPD O2 extender that claims to fix it. If I ever get the truck back from the dealer, I'll install it to verify. Total of 12 weeks between the three times it's been in for this, and counting.

It's back in with the same noise. They've tried replacing the lifters, timing chain and tensioners. Now they're talking to the Ford Performance hotline to try to figure out what to do next. The mechanic wants to replace the engine, but Ford won't agree to it.

Looks like only if you purchase the extended warranty from Roush, and it's only up to 36 months/36k miles, and I'm going to hit 36k in about two months. https://www.roushperformance.com/media/pdf/flashpack-powerpack-Optional-Limited-Powertrain-Warranty-Upgrade.pdf

Tom from Ford Performance told me today that the FP Raptor tune is "never going to happen". I've been waiting over two years to avoid warranty complications because they kept stringing me along with "in the summer", "by the end of the year" and "soon". Time to roll the dice, because the Roush...

Tom from Ford Performance just told me about an hour ago that the FP tune "is never going to happen".

2017 w/27k miles. Roush CAI and Stainless Works downpipes and exhaust. Cam phaser broke, and it took them 6 weeks to replace it and the cylinder head. Ticking noise on cold starts. They had it for two more weeks recently, declared it fixed, but the ticking remains.

FP Tune The latest from FP is late this quarter, early second quarter. I've heard so many different stories from them, I think they just throw out whatever date that pops into their head. Still waiting. I know a guy who put the MPT tuner on his, and is having issues building boost, and his...