"Pete M" wrote in message news:ei84g6$b5m$ snipped-for-privacy@registered.motzarella.org...
No that was already there on the Coupe. The GSi is boosting normally (settles to 9psi, max of 14psi overboost). The coupe isn't overboosting as much - which is odd especially considering that's it's been remapped and the boost has been increased. So, we suspect a leak somewhere (how does one check for this - is it DIY or can a garage run some kinda pressure check?) or a soft spring.
It's fun this engine tinkering lark :-)