yo just bought my first volvo, which is a turbo wagon, i'm looking to get more boost out of this low pressure turbo. I know there is a factory boost controller on it and i know you can flash or chip your ECM to up the boost but i was wondering if you can bypass the factory controller and install a manual ball and spring? Any help would be awesome.

 

Yes you can easily I have them on both of my cars.
First you need to install an aftermarket guage to keep track of the boost levels accurately.

It is also very easy to install.

 

does the factory controller stayed hooked up or what and where did you T in you vac line for the wastegate?

 

The factory one stays plugged on electronically and that's all.
Basically the MBC goes between the waste gate and compressor hoses on the turbo.

 

thanks man i'm still alittle new at modding volvos

 

Connect put the MBC between the red and blue hose: