Loud resonating sound from Apex frontpipe

[ameano]

I'm getting a loud resonating sound from my Apex stainless steel flexi front pipe. This normally happens around 3k rpm and can be intermittent.

Initially I thought it was the clutch / gearbox, however I've changed the clutch and flywheel now and my mechanic friend says that is where its coming from.

Has anybody come across this before?

Cheers

[martinbattye]

you have a decat?

[Sideways Simon]

possibly the baffle in the mid box or something like that

[ameano]

I have a decat silencer?

[taiwan]

you havent any brackets between the downpipe and the gearbox?

[ameano]

Don't believe so, and its not the heatshield (there isn't one ), I'm going to be ordering up some poly exhaust hangers as a start... My backpipe is rubbing against the rear bumper a bit, not sure if this would affect the resonating sound though?