bigDogs02GT said:
So basically if I add the TB and Plenum and do not have it tuned I wont break or hurt anything? Thanks
Nah, you won't hurt it. I've got a K&N FIPK-II, Accufab 70mm TB and plenum and it runs like a dream. I'd like to get an AFR reading during a dyno pull to get an idea as to where it is now and would consider a tune to
optimize but it's not needed for fear of hurting stuff.
As for the horror stories you hear, there are two things you need to know:
1) Often when you get UDPs you get a long bolt in the package. This long bolt is intended to be used
only to pull the new crank pulley onto the snout of the crank. Once it's on and you can get the factory bolt to thread in properly, switch the factory bolt and torque it to specs. Using the long bolt will result in the bolt bottoming in the snout and, as you tighten it all to hell, it will snap.
2) The factory bolt is a TTY (torque to yield) part. This means that once it's used once, it's actually stretched ("yielded"). These are really meant to be replaced every time they're used. If you re-use a TTY bolt you stand a very real chance of it snapping. So, before installing your pulleys, get a new crank bolt or two from Ford and use a new one each time you re/re the crank bolt. Of course, it goes without saying that you must follow Ford's recommended tightening procedure for the bolt.
BTW, ARP makes a re-usable bolt for the 4.6L snout that doesn't need replacement. You can source it through SHM.
If you note these two items, you shouldn't break anything.