[s-cars] more boost with rs2 turbo

[krists@livas.lv]

Hello Robert,

I've done the WG screw mod and have experimented with this but when I had
the Motronic setup, I remember, that scroll down the screw with the max.
possible turns got me +0.1BAR of boost - and that was with the original
chipsets (so - 2.3 overboost). With the MBC , it was 2.5BAR max.

The question was, what AAN rs2'ed guys do for having 2.8BAR absolute(1.8
relative turbo boost )? Does the software and 3BAR MAP sensor change (not
to mention all the other rs2 bits) will give one these boost numbers? I've
heard that real Audi RS2 WG spring is stiffer than found in ABY/AAN setups.


Original Message:
-----------------
From: Robert Myers robert at s-cars.org
Date: Tue, 18 Oct 2005 10:13:37 -0400
To: krists at livas.lv
Subject: Re: [s-cars] more boost with rs2 turbo



Hi Krists,

Stiffening the WG spring might help.  Drill a small hole dead center in the 
plug in the center of the WG cap and use a sharp object (a nail perhaps) to 
pop the plug out.  Discard it.  The plug is < 1 mm thick so don't go 
drilling for oil ;-).  Now use a 5(?) mm Allen wrench to screw the newly 
exposed screw into the WG.  Some are lock-tighted in place and may require 
heat from a propane torch to soften the stuff enough to screw the bolt 
in.  Keep track of how many turns you use so you can put it back later if 
you want to.  Optimal for my car turned out to be about 4 turns.  Others 
report anywhere from 3 to 6 turns as optimal for their cars.


At 10:05 AM 10/18/2005, you wrote:

>Hello!
>The problem is that I'm seeing aprox 1.5 turbo boost pressure (2.5
>absolute) all the way to 5500rpm and I can't get it to 1.8BAR. How could I
>resolve the problem and what's the limiting factor of boosting max to
>1.5BAR? - can one get 1.8BAR with the standart WG spring. Do I need the
>stiffer WG spring (one from 034efi that says 1.9Bar max boost) or should I
>fit a MBC between the WGFV and WG and keep the stock WG spring?
>P.S. I have a 3BAR MAP so no worries about how the ECU could stick with
>these boost levels
>Silver Euro S4 91'
>
>
>
>
>
>
>Megasquirt ECU (3 BAR MAP, custom COP ignition setup, mega squirt'n sparks
>-extra firmware)
>rs2 turbo
>rs2 ex.mani
>48lb/h injectors running at 4BAR
>Bosch racing fuel pump
>710N BPV
>custom exhaust system
>MB CLK /Typ 208/ 315mm front brakes
>Audi A6 2000 avantgarde 17"x8.5
>Michelin pilot sport 255x40
>Audi TT shifter
>
>
>
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