Originally Posted by ballin

Seb, this??
fuck knows how good it is.

D.I.Y 2 STAGE BOOST

Why pay £40 for a 2 stage boost kit when you can make it yourself for under £5? All you need to do for the 2 stage boost is it interrupt the signal from the Amal valve to the ECU, and then the boost will get lowered by the ECU.

Your cars chip must support an Amal valve and all three hoses must be connected up for this to work as well. So if you are using a bleed valve it won’t work!

Here’s what’s needed and how to do it.

1 x switch, length of insulated wire, 2 x junction blocks

Cut into one of the wires that runs to the Amal valve, you decide which one and where to cut into it, it doesn’t matter.

Add the new wire to the cut you have made and join it by using the junction blocks or soldering it if you like.

Feed the wires through the bulkhead of the car.

Add the wires to your switch and position the switch where you want it in the car.

When the circuit is broken by flicking the switch, you should find that the boost level will drop. When the circuit is joined the boost should go back to its normal level. Best to check it out by using a boost gauge so you know what boost level you are running on low and high boost. I find this method is ideal for motorway cruising on long journeys or if you are driving in the wet.