Irregular Boost?????

[|PRESA|]

I recently chucked in a Turbo Smart T peice boost controller, I bypassed the standard boost solenoid (obviously) and as far as I know all is fine BUT....

I adjusted boost to run 10psi (0.7bar) nah the thing is it boosts to 0.7bar but then drops down a tad to 0.6bar sometimes 0.5bar.

Why doesn't it constantly boost and hold at 0.7bar?

I heard off a mate that apparently its the stock bov that is only pressurise to handle 7psi (stock psi) and I would need an after market...

HELP!

[Redbaboon]

Firstly, you can't expect accurate results from a nasty bleed valve - the orifice that restricts the air flow is subject to change, as the metal valve heats and cools, changing the boost pressure that it is supposed to hold. To get 100% stable boost, you will need some sort of electronic feedback system, but of course this means more $.

If you're going to increase boost pressure, I recommend that you also block off the factory BOV and run an aftermarket type. This is because the factory BOV is designed to slowly leak. This may also be a factor that impacts why you can't hold boost now with the bleeder.

Hope this helps, cheers