Yours is a WRX Ace? Aren't those STi decals on the doors?
I can crack 35mpg in my bug WRX regularly on my 50 mile commute. Tuning should have very little impact on a car's off boost fuel economy... On fact, with the T28 on the Rover, it was even more economical on cruise due to the higher boost threshold. The ECU wasn't fuelling for boost quite as quickly.
I can crack 35mpg in my bug WRX regularly on my 50 mile commute. Tuning should have very little impact on a car's off boost fuel economy... On fact, with the T28 on the Rover, it was even more economical on cruise due to the higher boost threshold. The ECU wasn't fuelling for boost quite as quickly.