ScoobyJawa

Thanks John - ok do you have a number for Falkland, I'll call them tomorrow? If I tell em about you and the pipework will they know what I'm on about? (I ask for 3.5mm hose yeah?)
I imagine I can specify whatever length I want? I'm sure scott would probably like to upgrade his too.....

No need for a pic now I can picture exactly how you've got it set up its the hot coolant pipe it will be running across the top of....
So you will have about 3cm pipe by the turbo? and about 8ish to the wastegate?

LOL @ the insistency Ok - you've twisted my arm and I'll defiantely get to the bottom of it and we both (scott and I) may end up with slightly better control as I think his still flucuates a little too.........

john banks

If you can find some T-uk pls tell me where - I went round loads of motor factors taking a sample in and none could help - I tried about 10 places I think! Subaru wanted £15 for the bent piece which the restrictor sits in - about another £8 or something for the restrictor!!!

T-uk

I'm sure I saw some in Partco and Halfords,but will go and check tomorrow.is essport (sp) still open in Dunfermline,thry are bound to have it.

john banks

http://www.falkland.co.uk/ Yes they set me up with 50cm of the stuff - all used now on other folk's cars and mine.

Ask them for 3.5mm inside diameter boost hose.

3cm and probably a bit less than 8 I think - it is short enough that is does not move.

I can't belive I misspelt insistant - uneducated git I am.

ScoobyJawa

Thanks John - I'll get onto them tomorrow and hopefully sort some hose ready for the weekend.......

Will try and mirror your setup since you seem to be getting on pretty well with it.

Let you know how we get on.......

ScoobyJawa

Hi John,

Spoke to Alan at Falkland. He said he didn't carry that size boost hose and couldn't remember supplying it to you? Said the smallest he had was 6mm He gave me the number of their supplier (Silflex or something like that, a guy called Anthony I spoke to) he said the smallest inside diameter hose they make/supply is 4.8mm........

paulwadams_my99

i couldnt find any tubing at halfords either, looked everywhere nor the majority of motor shops. I had a smilar problem on factory setup. I looked at everything or so i thought. On closer examination and I mean taking every little tube off and cleaning i noticed a hairline crack in the t piece. Not that this affects you with your dawes setup. It does sound like something is losing/leaking boost/pressure somewhere. I personally I am unsure of the tubing supplied with the dawes so i am gonna change it. If you are still having the same problem after changing your tubes you can borrow my dawes to retest if you want? I am not using it at mo until I sort out the afr and knocklink.

Cheers

Paul.

ScoobyJawa

Paul,

Thanks for the offer of the dawes, I should be ok to borrow Scotts to try but if not I'll give you a shout - cheers

Been on to Van Aaken Developments who are based at the Transport Research Labs here in Bracknell and they reckon they can supply the hose I need, so I'm gonna pop down there at lunch with the pipe that came with the dawes for a sample. They do quite a bit of work on Turbo cars so should be able to get sorted. Also, whilst looking on there site I noticed they do a Variable boost controller, which is setable inside the car - might have a word with them about that too while I'm there......

http://www.vanaaken.com/turboproducts/index.html

then click on the VAD Variable Boost Control link on the left.

Thoughts?

Cheers
Neil

T-uk

did not have time to try Halfords but Partco motor factors do diesel spill hose(3.4mm) in metre lengths for about £5.I'll cut off what I need and give john banks the rest to try/hand out.

john banks

Good one T-uk.

The boost controller on the page looks to be effectively a PWM solenoid with different static duty cycle settings - so like a valve with electrical adjustment. You would have to disconnect your solenoid like the Dawes for it to work best and it would spool up slower than the Dawes - like replacing the solenoid with a bleed valve.

Used as a bleed valve it would just increase peak not held boost very much.

It does not look like a proper closed loop EBC - it is a dumb device without feedback unless there is a MAP sensor connection - which it doesn't mention.

ScoobyJawa

Van Aaken managed to supply some hose. It is much sturdier than the Dawes stuff, gave me a metre for a fiver. Its a touch smaller than the dawes, the internal diameter is 3mm, will this be ok? Still fits over all the pipes no problems.

Also spoke to them re the controller.....
It looks very different to the pic on the site and is in fact more an EBC, an LCD control unit in the car(quite smart), linked to a computer black box. Fits a scoob no probs. It takes its reading from the place the boost gauge does and updates on the fly. You can change boost to be more later in the revs or earlier in the revs, high power in the middle and etc etc, tailered to what you want. He said you set it to hold whatever you want and there is no peak. I think he said it uses its own solenoid to operate on the actuator?????? Dunno exactly!!!
He also said that you can buy an attachment for it that will allow you to also monitor Oil Temp, Oil Pressure, Inlet Manifold Temp etc all on the LCD unit for not much extra. Must admit it sounded pretty good but then it should do for the best part of........
£500+ The attachment was a little more on top.

john banks

Sounds like an AVC-R basically. Or my £15 EBC with a fancy screen

ScoobyJawa

My thoughts exactly John, in fact just been looking at them to compare. Can't see the point in 500 quid for an extra 0.1 or 0.2 bar when the dawes does it just as well, with maybe a little less control.

Me and scott are gonna mess about and see what we can find, just gotta sort out a suitable time to do it.

Do you think the 3mm will be ok?

john banks

If you can squeeze it on then fine. It might be a bit tight. 3.5mm is possible, easier when warm

ScoobyJawa

Oo er John, I don't know, first you go on about kinkiness and now squeezing



Its fits on, as I've already tried Just didn't know if there were any other considerations!!!!

T-uk

just replaced my hoses with the Partco 3.4mm stuff,which is also braided with cotton thread and can only describe it as ba5tard tight.fits the bleed end but gave up trying to get it fully home on the other end and ended up using the short original pipe.perhaps a blob of KY gel would help .

john banks

If you can do an Evo I am sure you can do this

john banks

No rush John and I'm working tonight I don't need any presently as I already had the Falkland stuff to do my and Sam's Evo. I think others may need some though.

john banks

http://www.mrtrally.com.au/performance/docs/WRX-V5.pdf

T-uk

thats the same as what was put on the other thread but neither are working for me,anyone else having trouble?

sorry for the hijack

john banks

http://www.ravensblade-impreza.com/m...ingdiagram.pdf

is an alternative - have to wade through it a bit.

MRT site is working (v.slowly) for me.

ScoobyJawa

Its not the piping

And if anything its highlighted it worse.

2nd and 3rd is 1.0 held, 4th is about 1.1(just under) (rare peaks to 1.15) and the peak is 1.15, fluctuation is much better (ie less) with the new piping and I now have it set up as you do John.

In all gears though now it is now very noticable. As soon as you get to around 5k revs the boost dies from 1.0 or 1.1 (depending on gear) right back down to 0.75 in one swift drop so its effectively entering limp home mode.

Will be trying Scotts Dawes tomorrow or at the weekend.

ScoobyJawa

We found the problem!!!

Took Scotts Dawes of his car and tried it on mine and got exactly the same problem Every gear, boost dropped to 0.75 ish @ 5k revs. Scotts Dawes is set up exactly like mine.

Fortunately Mark Khan also popped along and he is running his with a 1.5mm bleed not 2.0mm. We tried that on my car and straight away the problem was solved. It pulled like a train right to the red line and no dip in boost whatsoever

We have also sorted scotts and marks car so the dawes is more upright with about 3cm pipe at the turbo end and about 7 to 8cm at the wastegate end. This was using the much stronger piping I got from Van Aaken. This made a noticable difference to both cars with the peak much more under control and also a dead steady needle on the boost gauge where before it had fluctuated

Horay - its not my car!!! Good job I didn't give up Cheers for talking me out of that John

john banks

So do you think the 2.0 mm hole is the culprit on your car but OK on Scott's and mine? Although I only went to 2.0mm after I tightened the actuator. I can't imagine why a larger hole would make it unstable - it has only ever stabilised it on my car. Puzzled. A simple bleed valve would not fly all over the place like this, and that is all you are doing by increasing the hole size.

ScoobyJawa

Yep John thats exactly what we think. I had no problems before two weeks ago when in attempt to cure boost fluctuation and peaking we both drilled out to 2.0mm and stretched the spring.
A few days later i started to notice the problem. Obviously from going from a 2.0mm straight to a 1.5mm tonight and the problem going its got to lie there. Scotts is a MY00 and mine is an MY99 (green versus my black ecu). Perhaps as shown in earlier threads the way the ecu behaves on higher boost is different between the 2 types of ecus (think the green advanced more or something??? for emissions) and that may be why the difference. We are not sure whats in Marks car but he has a Jan 2000 V reg so possibly got a end of year MY99 with a black or brown ecu.
So the 2.0mm appears fine on MY00.

No idea why the bigger bleed has effected it so much but the evidence speaks for itself.....

As I said though both I (when I tried Marks dawes), scott and mark in his on car noticed a big difference (peak and held fluctuation) in setting the dawes vertically with the strong 3mm internal hole hosing, not too confident of the dawes stuff now.....

mutant_matt

I'm running a 2mm Bleed hole on a September 2000 car with fantastic stability and none of the problems you've been seeing.

Interestingly, I have been having some other setup problems which I solved but during the setup process, I spoke to Darren Dawes and he said he thought that a 2mm bleed would cause spiking?????

Just thought I'd throw that into the mix

Matt

john banks

Bigger bleed has only ever reduced spiking and increased stability on my car.

ScoobyJawa

What setup problems were you having?

ScoobyJawa

Should be getting a new dawes tonight to try. I'm gonna drill the bleed to 1.5 and see how I get on, if this one has the same effect as Mark Khans then thats defo the prob.......

ScoobyJawa

New Dawes put on the car tonight. Already drilled to 1.5mm by Darren Dawes. The car was absolutely fine yet again. No drop off in boost at all and the bl00dy thing just shifts now

Sorted