OK first off. 2004 STi TBE, Intake, Cusco Hyper Single Clutch, tune,

I have a Cusco Hyper Single clutch and ever since it got this clutch with a tune when i am driving and push in the clutch say pulling to to a stop light of something, the RPM's drop to 0-500 rpm on the tac but spring back up to normal idle is this expected with the clutch or is this a tuning issue?

Next question:

My car has the dreaded rear diff clunk. but I never got the rear diff clunk fix. now it has stopped doing it. did something finally break? my *** sags but I think it is just because of my stock struts being blown they get stuck...
so what should I look for to see if something has broken?

And finally. My STi has 72,000 ish miles and has never had its fuel filter replaced... but it has ALWAYS had Chevron/Shell top grade gas ran through it. do you think it is desprate for a new one?


Thanks All

 

24 hours, No reply??? WTF don't make me switch back to Nasioc