[Diy_efi] Re: Tunning TDi engines, advice sought

[Lachlan Chapman]

i havent yet obtained the engine, so i cant rip open the ecu and look for
eproms, but this seems like the best idea at the moment, the other idea i
had was something like a van aaken box, except you cant change the fueling
yourself on those.
----- Original Message -----
From: "Stephan Helbig" <sthl at gmx.de>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, June 18, 2002 8:08 PM
Subject: [Diy_efi] Re: Tunning TDi engines, advice sought


> Hi,
>
> Seems you all have the Bosch VP 44 rotary pump. However, it actually
> doesn't matter which pump it basically is (many other diesel come with
> VP 36/37). The only question here again is: How to find maps. There
> should basically be five incoming signals to find in the maps (or
> registers in the disassembly) for the basic functions:
> - pump position sensor (only with VP 44 afaik)
> - TDC sensor=engine speed sensor
> - throttle position sensor
> - boost pressure sensor
> - EGR valve sensor (which should be switched off!)
> - some pumps even have fuel temp sensor, another throttle position
> sensor, injector solenoid sensor on the pump and a needle sensor at one
> injector and one should take into account coolant temperature, which is
> connected to advance ignition.
> All in all: not a quick job and I'm also still looking for to find
> single maps on my BMW 525tds files (yes, there are two eproms and so I
> have *two* files at 90kb).
> As for the BMW files it is remarkable that there are a lot of zero flags
> (FF) in the middle of the file and the actually programming only seems
> to be at the beginning and at the end. The disassembly shows you besides
> hexadresses registers like "J8132". Anyone any ideas about that?
>
> Stephan
>
> Lachlan Chapman schrieb:
> >
> > I was about to ask a similar question to the list, the engine i have in
mind
> > is a nissan with a bosch VP pump, it apparently uses canbus for the link
to
> > the ecu, but the manuals at the dealership didnt go into any more depth.
> >
> > ----- Original Message -----
> > From: "Shirley, Mark R" <MarkRShirley at eaton.com>
> > To: <diy_efi at diy-efi.org>
> > Sent: Tuesday, June 18, 2002 2:15 AM
> > Subject: RE: [Diy_efi] OT: Tunning TDi engines, advice sought
> >
> > > Is the pump an electronic one, or a mechanical one?
> > > If it's electronic, you need to find out who makes your controller.
> > > Then we can tell if there's anything you can do.
> > >
> > > -----Original Message-----
> > > From: TVS [mailto:toby at kmvs.freeserve.co.uk]
> > > Sent: Friday, June 14, 2002 6:53 PM
> > > To: DIY EFI
> > > Subject: [Diy_efi] OT: Tunning TDi engines, advice sought
> > >
> > >
> > > I appreciate this is off topic but I believe a few people hear have
> > > excellent experience with tuning turbo charged diesels? My cousin is
> > racing
> > > a Landrover in local events with a standard Rover 3.5 V-8 but I
believe
> > > there are a number of tuned 300Tdi which are very competitive. The
problem
> > > is I can't find any good information about tuning turbo diesels other
than
> > > companies selling there survives with stage 1 thought to 4 etc.
> > >
> > > The engine is a 4 cylinder, 2.5liter with a 90.5mm bore 97mm stroke.
It
> > > produces 110hp @ 4,000RPM and 195b ft @ 1,800RPM. Valve are 39/36.5mm
> > > inlet/exhaust The turbo is a Allied signal unit with max boost of 0.83
to
> > > 1.04 The intercooler is small and robustly made with a very thick
casting.
> > >
> > > We are looking for approximately 150+ Hp and as much torque as
possible.
> > The
> > > area I'm least familiar with is the diesel injector pump, the fuelling
> > curve
> > > and timing. But I would be very grateful for any information regarding
> > this
> > > sort of project all together. Thanks, Toby
> > >
> > >
> > >
> > >
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> > >
> >
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>
> --
> Visit me:
> http://people.freenet.de/sthl/
> http://www.e-ger-translation.de
> Mobil/SMS +49/174/5678 845
>
>
>
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