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What's stock? From memory 3mm isn't it? And I didn't think Scotty modified that hole. Should I drill it out to 5mm?

Lol, no mate; don't drill the hole out.

Preload basically means that the arm will be too short to reach the pivot pin on the Wastegate arm. You'll need to pull against the actuator spring and stretch it into position. That extra stretch is preload.

Lol, no mate; don't drill the hole out.

Preload basically means that the arm will be too short to reach the pivot pin on the Wastegate arm. You'll need to pull against the actuator spring and stretch it into position. That extra stretch is preload.

Lol ok. Not sure how much preload I have, but it sounds like a stronger spring will give more preload?

I think sometimes when I weld the spring mounts on the actuator it may grow in length slightly, (don't get too excited Craig, dirty mind.) This can be counteracted by simply sliding a washer or two under each of the mounting points on the front housing. There should be 3-5mm of preload which means you should have to slide the shaft out of the actuator 5mm before it will clip on to the wastegate arm, it will take a bit of force as the springs are so strong. It sounds like yours needs more preload in any case Ryan.

I've replaced every vac line now I think. I can't see how that would be it.

There is a restrictor of some sort in one of those hoses (going to the wastegate?). Did you leave that in or remove it?

I think sometimes when I weld the spring mounts on the actuator it may grow in length slightly, (don't get too excited Craig, dirty mind.) This can be counteracted by simply sliding a washer or two under each of the mounting points on the front housing. There should be 3-5mm of preload which means you should have to slide the shaft out of the actuator 5mm before it will clip on to the wastegate arm, it will take a bit of force as the springs are so strong. It sounds like yours needs more preload in any case Ryan.

Wait... So you want my shaft to grow in length? :P

Cool, well washers sound like an easy solution. I'll give that a crack and see how I go. 1-2 washers should give me an extra 2-3mm preload.

There is a restrictor of some sort in one of those hoses (going to the wastegate?). Did you leave that in or remove it?

I was gonna suggest the same thing

Yeah there is a restrictor, but when I replaced the hoses I knew this was there and was cutting all the hoses apart to find them. Maybe I missed one, because I didn't find one.

If its in the hose from the boost solenoid to the wastegate, is it something I can go and get from Repco/Autobarn/SuperCheap and just replace?

The restrictor is in the stock bleed solenoid lines which I assume were removed to install the boost controller, either way the restrictor is only there to bleed the correct amount of boost off, if you remove it you will run almost unlimited boost, not have boost drop.

i dont this to mine yesterday. i steam blasted the top cover cause of the temp switch and other crap on it i didnt want to drop it in the tank over night. but the bottom cover got a tanking and ended up like this after the carbon build up.

Top cover
SA501699_zpscf12718e.jpg
Bottom
SA501700_zps44e14716.jpg

^^^ VQ25/30DD?

I washed mine today as I'm heading to the SAU NSW tech night tonight. I just love the way it looks after a wash, specifically standing back and looking at this, so I thought I'd share!

8677538210_96fcbd5eb9_c.jpg

^^^ VQ25/30DD?

I washed mine today as I'm heading to the SAU NSW tech night tonight. I just love the way it looks after a wash, specifically standing back and looking at this, so I thought I'd share!

8677538210_96fcbd5eb9_c.jpg

You have big snails in your front yard!!! WTF is with that??

finally ive been waiting to post this. :yes:

cars tuned, very happy with the results its been a long time( almost 3 months) with issue and constantly annoying the guys on here.. but first in WA :)

it is road tuned so no dyno results as yet guys but its a big improvement and im sitting at 19.5psi :)

id really like to thank Scotty, Craig, Ryan and of course all the others for imput for helping me through the tuning/ mehanical issues ive had. :cheers::cheers::cheers:

i will get dyno run for all you doubters eventually lol

  • Like 1

Had noble intentions today of fitting up the LSD rear end & the Scotty dump, front pipe & new Blitz Nür catback I got the other day...

Diff went in fine, but I was foiled utterly by the stock dump pipe... :(

I even called Scott to walk me through it, but couldn't for the life of me remove the O2 sensor with the tools I had - and as a result I couldn't get to the top centre nut to the dump pipe flange.

Fitted up the rest of the exhaust to the stock dump (will be forced to ask Craig to do it for me while I hang my head in shame) and I'm glad to report that its SUPER quiet. At idle, it's not much louder than the standard exhaust & probably just as loud as the induction roar on WOT.

Will be interesting to see if there's any change in noise levels once the factory dump/cat is swapped for the good one...

Edited by Mr 20Valve

Haha, its a ripper that bolt, and why I offset the o2 bung on my dump pipes. It will go together and come out again much easier once Craig fits it.

The dump makes the difference as it is the main exhaust restriction.

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