Ah, ok
Ive just had a read through that, in terms of air leaks the std manifold gaskets are pretty good sou should be fine with the std MPI one. just check the fastners are in good condidtion and are pulling the manifolds down effectivly, keep an eye for differenct height luga on the manifolds where the washers pull down although thats only normally an issue where after market manifolds have been used.
often when theres an air leak you'll actually be able to hear where the air is getting in, another trick is to go around the suspect area's with an unlit propane torch, when it suck in the gas you hear the idle smooth out. of course you doo need to be aware that loads of gas is a fire hazard, so use it sparingly! but its very useful for checking things like leaking throttle butterfly seals.
Brilliant I’ll have another play, it is an aftermarket manifold but they do look the same thickness, might get it off and get a vernier gauge on it just to check, I’ve sprayed around the injectors with brake cleaner and the revs do change very slightly (check my YouTube videos) I’ll have a look further into the throttle body see what’s in there, my biggest thing and clearly an issue is when I push on the throttle position sensory body itself, makes no sense ?♂️
Thanks for taking the time mate
