it's easy to blame the tune and it may be the tune, but fact is you may have a mechanical issue that needs to be sorted

This is not the only problem with the tune it runs rich as keeps bringing up a rich fault code and cat fault code it gone back 4 times mad it won't go back any more it might be a mechincal fault apart from this big flat spots

And running rich I say tune isn't 100 percent I'm my line of work if I didn't do my job right the first time my kids would go hungry

Thanks boys for your thoughts and good advice

does your tuner drive a G6ET?

Did you do a boost leak test on your intake pipes.. What other mods u got ? U might be restricted somewhere ?

does your tuner drive a G6ET?

This

Hp + rd tune = ?

This

Was it rapid systems?

Where you located sounds like you need to take it to someone that knows what there doing before it goes boom

does your tuner drive a G6ET?

And a GT?