soooo, what were sayin is the F should be fitted in reerse of the C, i.e longest pipe heads towards back of the engine and short one into air intake just behind maf? just switched mine round after reading this and its boositin up to 9/10peak again and no soft limp??? hae i cured it?
 
tried it with the long pipe entering behind the maf and the other 2 pipes in both positions and it hit limp both times, if i run the longest pipe upwards.... it runs really smooth and boosts properly, any issues with doing this?
 
i duno but if i was you id leave it in the position it works in because thats prob the way its ment to be. but as this thread shows i know nothing about cars ha ha