Strange Noises From R33

[MATT_R33]

hi. i'm only new on here and not sure if any of this has been covered before so if it has please direct me in the right direction.

i have recently bought a r33 s2 which i love. i have a few issues though, when i drive up a driveway there is a really strange creaking/groaning sound from the rear end of the car. it has been lowered and i think that it does lift up one of the rear wheel when it goes up/down a driveway on the right angle. somebody mentioned it was the sound of the body just straining because of the lifting of the wheel? not really sure though...

the other problem is that whenever i'm trying to park it nearly always stalls. nothing to do with the operating the clutch, it just struggles to want to idle sometimes. i'll slow down to park and with the clutch pedel pushed in, and my foot on the brake it will sometimes drop to like 300rpm for a few seconds then build back up or sometimes it will stall. if it doesn't stall at that moment, when i then reverse and feather the throttle it will nearly always stall then. never happens at traffic lights though so i dont get it??

haven't checked the plugs or anything but just wondered if it was something common with these cars that someone could help me with??

also my car is running 2.5" cat back exhaust. if i put a new dump pipe on it from turbo to cat will it change the sound at all and will the performance be noticeable? car is only running std boost at about 5 pound. my next question is with the front mount that it already has, what is max boost i can run safely and do i need to do anything to run more than 10 pound? i've heard i might have to install a bleed valve or something?

[Duncan]

no idea about your idle problem, and the creaking noise is probably worn bushes in the rear, sway bar or control arms probably. Have a good look at them all.

but the good news is getting to 7psi all the time is easy - have a look at this thread http://www.skylinesaustralia.com/forums/HO...ost-t42895.html. if you want more 10-12 you need a boost controller of some type.

what else will you need to run more boost? nothing if you are lucky, but if your plugs, coils or AFMs are getting old you will have missfire problems until you fix them. And if it starts pinging look at cleaning injectors and replacing fuel pump

[H@ME]

PM SENT - however with ur idel problem are u running a atmos b.o.v as this will cause stalling problems at low rpm. The creaking etc will be worn bushes in the suspension components.

[MATT_R33]

are control arm bushes or sway bar bushes expensive to buy and is it worth the hard polyurethane bushes? never used them as never needed to replace bushes in any car before? do they make much difference on the road?

also is it possible to replace them by yourself? haven't had my skyline up on the hoist yet as i've only had it for a few weeks now. i'll probably need a press to change them wont i?

i've been reading through the topics on this forum. it seems if i earth out the solenoid on the wastegate then it will run 7 pound all the time, but what about if i put a new dump pipe on it? its only std at the moment. will this increase the boost by maybe another 2 pound?