I’ve just bought an 09’ hatch sti.

One thing I didn’t check when buying the car was how it boosted in sport sharp mode. The boost violently cuts off when accelerating hard.

I’ve ran a scan with freeSSM and comes up with no errors.

The car runs perfect in intelligent and sport modes.

One thing i was wondering is that the car has been fitted with a 3” exhaust with sports cat, all else is standard. Could this cause it to overboost and hence the fuel cut?

Thanks for the reply guys, I thought it may have been the exhaust. I just didn’t want to book it in if it was going to be a waste of time.

Knowing my luck then probably!

I’ll get it booked in for a map asap!