ScoobyJawa

Well - I played around at lunchtime, reduced the Dawes and it was still doing it - every time without fail in 3rd and 4th (5th would be very illegal so I didn't test that )

Took the Dawes off and returned it back to all OEM pipework and the problem has gone.

As a result the Dawes will not be going back on the car - its too much of a pain to make it worth its while. I am now back to standard settings with just the full exhaust and ITG, and I'm still hitting a 1.1 peak and 1.0 held from 2.5k RPM so I've not hardly lost much by taking the Dawes off and the car doesn't feel much different either............

Not sure how that helps your WHY? question John(Banks) as it still did it when turned down and OEM is now fine.........

[Edited by ScoobyJawa - 3/4/2002 2:24:02 PM]

ScoobyJawa

Took the Dawes apart and all looks fine, put it back together very carefully back to the point it was at when I took it apart and then turned it down a little more.

I *may* just give it one last try tonight. If I set it to say 1.0 or 0.9 and it still does it then there is definately a fault with the setup somewhere as there is no reason it should hit the boost or fuel cut at that setting, but realistically if I can sort I'll need to run about 1.1 held to make having the dawes on worthwhile since OEM is holding 1.0 anyway...........

Edit to add - when I took the dawes apart there was just the spring and ball bearing loose - is that right - there should be no other loose parts?

[Edited by ScoobyJawa - 3/4/2002 4:11:31 PM]

ScoobyJawa

That knocks the restrictor idea on the head then, Topcat (Moe) was the chap who mentioned it as opposed to using the Dawes.
Not much point in having a higher peak but the same held boost!!

Not quite sure I get what you mean re the valve, but sounds a bit touch and go results wise so it would probably be a better bet to try and troubleshoot the dawes.

lol@the bank balance
Bl00dy scoobies - ya can never stop playing with em
I'll have to have a nice word with Scott He literally lives just round the back of my house a 1 minute drive away Thanks for the offer of testing it for me though, I might take you up on it!! Might be worth me trying his and him trying mine, that way we'll get a good idea exactly whats going on.

Scott - Hi mate, how are you

edit to add:

From what you describe John you have the dawes set up vertical? Have you got any pics at all of the way you have it plumbed in?

[Edited by ScoobyJawa - 3/4/2002 10:22:57 PM]

john banks

Fuel pump hose of the wrong size was all I could find at Halfords. The pneumatics suppliers had none better either. Ring Falkland and they'll sort you out.

Yes, my Dawes is vertical, and then the outlet hose runs over the hot pipe (can't remember whether oil or coolant) where it is held with a tie. Sorry no digi camera to take pix.

Behaves immaculately, which is why I am so insistent you sort it!

[Edited by john banks - 3/4/2002 10:29:19 PM]

T-uk

john,

I was trying to give babber the MRT/Link wiring guide,but cannot seem to open it.are you having any problems with it or is it me .I used my history and have the right address .if you want this 3.4mm hose I could meet you at Halbeath services tonight.

[Edited by T-uk - 3/5/2002 5:24:05 PM]

john banks

Agree with the empirical evidence from what you are saying, but it would be nice to have a rational explanation to understand it better. The only thing the ECU could do about things is to change fuelling or timing? But it does not do this when you run high boost with a pure bleeder - we tried it on T-uk's MY00 ECU, and I have tried it on my MY99/00 PPP ECU. I don't dispute what you are saying at all, just want to understand WTF is going on. You could maybe solder the bleed hole back and drill one in the other side if you wanted to reuse your Dawes? Solder has a perfectly adequate mp of over 200 degrees C.

It is odd that the bleed which works so well on the TD04 turbo is the undoing of the device on your car. Without some bleed I would not run a Dawes at all - the part throttle is definitely too lean without it.

[Edited by john banks - 3/6/2002 10:49:39 PM]

ScoobyJawa

A rational explanation would be nice!!!
Yeah, from what I remember seeing on here the Green leans out more than the black in high revs but that shouldn't effect it.

I'm stumped as to why it worked but to be honest I never had a problem when my dawes was 1.5mm bleed, and no prob with part throttle either. The only reason I increased as I said was to try and control peak and fluctuation.........
I agree - I first tried the dawes "as is" and part throttle was definately an issue so I wouldn't run it on the TD04 without upping the bleed to 1.5mm at least, just strange why the 2.0mm effected my car so badly And strange why it was at exactly 5k revs in every gear.........

Another friend has a new dawes so I might use that (and drill to 1.5) and let him have mine as he is running an almost identical car to scott so it should work fine on his. Failing that I'll try that solder trick as you said.

Wish we could figure out the WHY though........

[Edited by ScoobyJawa - 3/6/2002 11:06:01 PM]