standard exhaust.... restriction?

[Jimbo]

Just a quick question
I remember reading some ones project thread back along and it sating they were running 22psi on an xud . They then fitted a full straight through or 2.5inch exhaust cant remember and they reckon it freed up power and was then boosting higher due to just changing the ex system.
Is the standard xud exhaust that restrictive or not.
All I have is a backbox. And I still cant get over 22psi is this the reason

Cheers

[Danny2009]

The backbox is so restrictive it's unreal

[Frosty]

Come down to my work on sunday and we will fit the exhaust i got for you

[Jimbo]

Should of made it clearer I have a stainless rear box although it was originall off a 106 I made it fit mine

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Come down to my work on sunday and we will fit the exhaust i got for you

Yerp will do.. still chasing this 26psi just cant find it lol. Only thing it can be exhaust or a tiny boost leak in the fmic setup somewhere

[Frosty]

Speak to me over the weekend ok mate. I want to see how it sounds!