Stealth-T

I had the same noises at some point and just made sure to put the front rotors back on nice and snug with the wheel on a little tighter than spec and the noise went away. It was the exact same in parking lots and low speed corners and the rotors being a little loose.

In case you haven't gotten the DBA xtreme pads yet, be prepared for dust. I couldn't bare my wheels turning from shiny silver to grey/black within a week of washing. Hopefully the street performance would be a little less dusty

Thanks a bunch @ilk I pulled and cleaned plugs again before re-gapping them all to exact same (realised they were a little funky when pulling them). Then used the CRC on all connectors and seems to have solved the problem! Shame I couldn't couldn't find your post when I first searched and thought I was going nuts...

Thanks puff and keith. The high RPM misfire was my version of high RPM (anything above 4000) and when we pulled the plugs it was defs a couple of crappy plugs and ran fine after that. I'll give it a go tomorrow with a couple runs and see what it does on idle after, but when I do go full throttle it doesn't seem to have any delays other than the half a second of lag. Thanks for the thoughts gents!

I wouldn't have thought that they'd be suspect as I don't really rev it out. How would I test for soft valve springs/thoughts on why them?

Well I checked all the wiring tonight and it seems to be in good condition. So I'm not sure what to track down on next, but I'm thinking I should double check that plugs are gapped to .7 It's really got me stumped

Yeah hoping it's not the tune as it was on the dyno at the tuners straight after changing plugs and he didn't spot anything other than a little boost leak from the plastic end-tanked I/C I had... 😞

Cheers mate. I'll give cam and cam angle sensors a double check. I'm pretty sure the coil wiring was fine as I did give it all a quick once-over. But I'll double check. Just find it really strange that it only does it on cold days. So wouldn't think it'd be wiring unless there's a ridiculously tiny gap in there.

Coils are perfect because I just replaced them as part of my general maintenance and it made no difference to the misfire. And I made sure to get brand-spankers from Ford! Ya I had it tuned a couple years ago. Do you suspect tune isn't happy?

Hey folks. From my searches all over I couldn't seem to find an answer, so I was hoping someone might be able to point me in the right direction. After developing a misfire at high RPM, it was determined I had a bad plug or two and they were all replaced and gapped to .7mm just like my previous plugs. All was dandy. Day after I found it misfired just as it was getting warmed and the error symbols came up on the dash. However when I pulled out the xcal4 and tried to scan for errors it was gone and the error did not re-occur for the rest of my drive. This is where the annoyance begins. It only happens on cold days where it's sub 10 degrees outside temp. and when the car hits a warm point. After turning the car off and on again the misfire/error does not re-occur and the couple times I've tried to scan for codes there has been nothing that has come up. I know the coils are perfect so it isn't them. Does anyone have any clue as to what might be causing this? Proving very annoying to narrow down

Well luckily I'm after something without plastic endtanks to boost leak rather than any big upgrades for the moment😃

I had my fg tuned a couple years ago with the standard cooler and have recently acquired an fg F6 intercooler. When I spoke to my tuner last year while getting a misfire sorted, he said I could drop an f6 cooler in without needing a retune (but could get it checked if I wanted). Reading through the intercooler threads is a bit iffy on the topic, but is it necessary to get a retune or was he about right? And what would the consequences be of running it without the tune if it is required?

Hey mate, don't know about those w shaped leaf springs 😱 but looks like your shocks might be koni reds rather than the stock ones (which are a black plastic unit that have a FoMoCo sticker at the bottom).

Another question while I'm going down the rabbit hole, does the diff cradle need to be dropped to put in new control blade bushes?

Defs don't need lower springs lol. Scrape so much already... I might have a better look at the KYB's though.