When I'm driving I get a loud air leaking sound at around 5k rpm. I think it happens when my second turbo kicks in. Is that normal or is it a turbo hose leak? I'm a new rx-7 owner so I don't really know. Please help me out. I also have a sqeaking sound when I am driving slow from the rear tires. Are those my brakes or I need to oil something up?

~alan

 

your past 5k rpm leaking sound can be any of the intercooler/turbo hoses and pipes, do u hear this in certain gear more then others? and the squaking sound from teh rear u need to give more info. its most likely your brakes

 

I think the leaking sound is pretty much the same at all gears. I'm not positive, I didn't really pay much attention to that. I just got my car checked out by a mazda dealer and they changed one of the turbo hoses already also.

~alan

 

check your boost pattern it should be 10 psi from somewhere at 2k up to 4.5k then teh switchover point u go down to abou t8 then it recovers 4.5k+ almost imideatly back to 10 and stays till about 6k rpms then it should be around 8 psi up to redline. if you do not have a boost gauge go get one, and also get a water temp gauge just to know what the temp relly is, stock gauge doesnt tell you much

 

I hope your joking about the brake thing?!!


Anyway. Check the line coming from the y pipe to the charge relief valve. That may be the problem. It's the black tube apx 3/4" thick.
Next check all the lines coming from the y pipe.
Thats my first guess.

 

Most definitely check the couplers. Sorry I thought that was a given. Just remebered you said your new to it. Sorry