Need a little assistance if I may. I'm getting a very noisy exhaust leak buzz at all rpm directly under the air pump and my boost is only pegged at 7psi, with occasional spikes if throttle is buried at 4k rpm. I thought it was air pump noise so disconnected the plug but no effect. Checked the HKS downpipe bolts and they are tight. Atihun came over and almost passed out from the fumes while snooping around for the leak.
It started the leak about a day or so after I did the poorman's non-seq mod, which works(or worked) fine for a couple days. I don't see anything in the mod that would cause an exhaust leak to my knowledge.
Any other area to look at for an exhaust leak directly under the air pump area other than the downpipe 14mm nuts? Thanks!

 

could be the gasket between the primary turbo and the manifold...that's where mine is leaking right now...

 

is it bad, can it brake anything?

 

intake gasket?

mike

 

But my buddies '94 had a broken bolt or stud and MazdaTrix said that was common. You could hear the air leak and he had little or no boost (no gauge). John only took 10 sec to diagnose it, even though he had to turn the work down. TriPoint took a week to come to the same conclusion after they dissasembled the trubos.

 

When I had an air pump the primary inlet hose rubbed against the belt. It made a hole about the size of a dime. You may want to quickly check that while your at it.

 

Had the same problem...turned out one of the 6 bolts (I think) holding on the turbo's flew out and I was getting one massive exhaust leak. The sound was this incredibly buzzing annoyance

 

had the same problem cause my secondary turbo manifold gasket was blown due to a major crack in the manifold.

 

I have an embarassing exhaust leak at the turbos or manifold lost all boost. I hope is not the bolts or studs I just need time to install brand new hi-flo pettits sitting in the house.