I never tried at 4-5 psi. My turbo has an internal wastegate and the spring is for a minimum 8 psi. Right now I don't have a boost controller. To be able to try at 4-5 psi, I need to change the spring for a lower psi base and add a boost controller. I'm realy satisfied with the 8 psi power. I don't think I'll go under or over 8 psi for now.
My turbo installation was a complete custom job. So it was made and installed as the work progressed. It took them 6 weeks to developped the kit. I removed all the kit (almost) to paint it and make some minor modification after I got my car back. It took around 4 hour to install it.
What do you mean by stage 1 or 2?
My turbo installation was a complete custom job. So it was made and installed as the work progressed. It took them 6 weeks to developped the kit. I removed all the kit (almost) to paint it and make some minor modification after I got my car back. It took around 4 hour to install it.
What do you mean by stage 1 or 2?