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INCREASING THE BOOST PRESSURE

By adjusting the wastegate linkage the boost can be increased by a few psi. (3-4psi)

Shortening the linkage increases the preload on the wastegate spring, hence more pressure is required to open it. I recently increased the boost pressure to 20psi with no adverse effects.

You can see the locknut and knurled adjuster in the pic.

First, remove the circlip and lift off the linkage

Next, hold the shaft with a mole grip whilst turning the locknut clockwise (towards the actuator capsule). The nut may be very tight. Once loose, turn it about 3 turns towards the actuator (about 3mm).

Now make the adjustment by screwing the knurled nut towards the locknut until the linkage is against the locknut. Tighten up the locknut.

You'll find its now much harder to refit the linkage as you have to compress the spring inside the actuator a bit more.

Bleed valves. Some people prefer these, but they offer no advantage and are not very discreet. They are manufactured because they necessary on turbos which do not have an adjustable wastegate linkage. However, if you want more than 3-4psi increase (naughty!) a boost controller is to be recommended, not least because you'll run out adjustment of the wastegate linkage.

) CHECKING THE THROTTLE POSITION SENSOR FOR FULL TRAVEL.

Its obvious that if pushing the accelerator to the floor does not cause the TPS to reach maximum travel, the ecu isn't going to receive a request for 100% of the available torque. My second 45, had a lot of free play in the drive by wire throttle cable which is easily adjusted.

The cable adjuster can be seen on the left hand side of the TPS bracket.

Pull it out of its slot, and screw it towards the end to take up any free play.

There should only be a little free play with the pedal up.

When the pedal is fully down, the quadrant should be up against its end stop - its just under the heatshield bracket.

The lever with the second cable attached is for my ZT50 cruise control.

Vreau sa fac chestiile astea doua la mine la masina si desi stiu limba engleza bine m-am cam pierdut in termenii tehnici de aici . Ma poate ajuta cineva? Merci.