today on my way home from work i accelerated in 5th gear from about 65-70mph and my boost guage went upto 22psi!!!!then when i left off the accelerator there was a bang!like a pop from the exhaust!! usually it boosts on about 16psi and peaks at about 18psi under a load.any ideas what it could be?
i have not long ago changed my n75 from a C to an F could it be this playing up?
the boost does seem to waver abit since i have changed that.
any help appreciated thanks!
hope its nothing expensive!!