Boost readings, maximums, and where from?

[PukkaSilvia]

Max boost can only really be judged at full throttle .

Put it in 3rd or 4th and from 30mph just full throttle it to 5k. You will then find out what peak is.

Connect the boost guage to a vaccuum on the inlet manifold area. T off the fuel pressure reg feed Or there is a spare blanked off feed on the bulkhead just above the brake and clutch master cylinder,

There are not any benefits from going above 12psi on the standard turbo. It will just kill it for the sake of about 8hp when turbo cold

Get some proper springs made up. Chopped ones are horrid

[SimonMitch]

Cool, thank you for the answer, I'll have a look at the other pick-up. All the figures are on full throttle then letting off. So its 12PSI on the actual plenum? I read somewhere on here that there is a pressure drop between turbo and plenum? If I'm setting for peak 12PSI at plenum, I'll be seeing 14PSI or something at the turbo outlet? Is this right?

I'd have brought nice springs but everyone I asked said they needed patterns/specs, I contacted some of the companies listed on here and none were any help. All the off the shelf ones were £150 plus so we were nice and rough arse with them!! Its much better than stock, honest!! Especially now we replaced the totally knackered front wheel bearings and the rear crossmember bushes. I think I'll be doing the rest of the bushes when we have money and time.