Right I have a question I want answered if possible, I have an Idea what the answer might be and its probably not what I have done.

What is the correct way to adjust boost and why, before anyone starts lets assume we are talking about adjusting within the recommended limits of a given chip, and that the fuel system is capable as is the turbo.

So A few examples

1. Adjust the pre tension on the waste gate actuator till desired boost is acheived.

2. (cossies and rs turbos) adjust size of the restrictor in the bleed of from the amal valve.

3. Fit a bleed valve.

4. bit of a cost option this one, fit air injectors and get mapped to suit or fit an aftermarket boost controller of some kind.

Im sure the last option is quite possibly the best but also the most expensive, which of the other 3 is the correct way and as mentioned why.

 

Option 4 you pikey

 

Doesnt really answer my question does it

 

i've been told that adjusting the pre-load on the actuator is quite a reliable way and thats how my mates gonna set mine up

 

And thats how I have done mine but I have my doubts that its the right way, hence the question

 

I would follow these steps....
1. Set preload on actuator, "half a hole".
2. Replace AMAL-valve jet.
3. Fine tune boost by adjusting actuator rod lenght.

By fine tune, I mean adjusting the rod length a turn, or a half.

 

ok I understand that, except replace jet how and with what, my local tuner always seems to set just using the pre load! Is there certain jets to acheive certain boost? and why cant it just be done with a bleed valve or with the pre tension, I prefer to have an understanding as to why I should /shouldnt do something.