scootz
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| posted on 23/10/09 at 07:32 PM |
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ECU's... Which One?
I'm looking to buy an ECU for the Duratec, but I'm bearing in mind that this engine will get replaced by the V8 Audi engine when
it's ready.
The V8 runs individual coil-on-spark ignition and has a variable cam.
Can anyone recommend a good unit at a keen price that will comfortably do both?
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liam.mccaffrey
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| posted on 23/10/09 at 07:40 PM |
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Vems will
megasquirt possibly will
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iank
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| posted on 23/10/09 at 07:41 PM |
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If you have a reputable rolling road nearby ask them for what they prefer to tune. Will save loads of hassle and money in the long run.
The Emerald unit is pretty good value for money if they have no preference.
(I would say megasquirt+spark but it can be a lot of hassle to get going so probably ends up pretty much the same price overall)
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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scootz
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| posted on 23/10/09 at 07:54 PM |
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Cheers guys... the Emerald won't control 8 cylinders though.
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liam.mccaffrey
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| posted on 23/10/09 at 08:00 PM |
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it will but only wasted spark iirc
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irvined
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| posted on 23/10/09 at 08:41 PM |
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I'm becoming a fan of the ViPec ECU's, they are very easy to tune, have lots of nice features, not cheap though.
Megasquirt will run it with some effort.
HTH
david
http://irvined.blogspot.com
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scootz
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| posted on 23/10/09 at 08:56 PM |
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Ideally I'm looking for a plug 'n' play... guess that rules out MS, VEMS, etc.
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ashg
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| posted on 23/10/09 at 10:46 PM |
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dump the coil on sparks get 2 edis4 units and a msquirt.
if you have paid 5k plus for an engine whats a couple of k to get someone to do the ecu setup
i would suggest you also look for someting capable of detecting engine knock as its a pretty expensive engine to kill
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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scootz
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| posted on 23/10/09 at 11:05 PM |
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A couple of K is a couple of K... like all things the Audi turned into something altogether more involving (financially) than anticipated and
there's not much more money to throw at it!
Regarding the knock sensors - there's 4 of the buggers on the Audi and every ECU manufacturer I've spoken to have told me that their
products won't support that amount!
But yes, you make a valid point - my intention was always to have the engine professionally set-up, but would like a steer at the best ECU for a
reasonable outlay.
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andkilde
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| posted on 24/10/09 at 02:12 AM |
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You could probably find some electronics whiz to make up an interface to turn the 4 knock sensors into a common signal -- you wouldn't be able
to pinpoint the knock to a specific pair of cylinders but you would have a workable solution. Or you could just tune without them, detonation is
expensive though...
My buddy used these guys for his rally car.
http://www.pe-ltd.com/
Good people, they do a lot of work with the FSAE teams as well, fairly inexpensive, not afraid of customizing to suit your needs.
t
[Edited on 24/10/09 by andkilde]
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clairetoo
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| posted on 24/10/09 at 06:03 AM |
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I looked at an american ECU (Thruster EFI) at Stafford - aimed at V8's , plug/n/play , looked easy to set up - but expensive (but then , the
prices on the website were in doller's  (
Megasquirt gets my vote - on my budget it is the only one that would run a V6 disributerless .
Its cuz I is blond , innit
Claire xx
Will weld for food......
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rusty nuts
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| posted on 24/10/09 at 08:43 AM |
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It's not uncommon for individual coil packs to play up , more so than the packs for multi cylinders so it may be better to go wasted spark ?
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Myke 2463
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| posted on 24/10/09 at 08:47 AM |
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Emerald ECU
My emerald K3 ran straight out of the box, not perfect but good enough to drive straight away. Base maps included on installation CD include VR6 &
RV8. Very easy to tune compared to MS it replaced.
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jeffw
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| posted on 24/10/09 at 09:23 AM |
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You have discovered why the vast majority of tuned Audis stick with the very expensive Bosch Motronic ECU that Audi fit which will be designed to work
with the engine. Someone like MRC Tuning could have tuned the Bosch to work in your kit car at its maximum performance. You could probable get a
number of ECUs to work but the Motronic would have been the easy choice. My RS4 (V6 2.7 twin turbo) ran 530BHP on the standard ECU and there are a
number of 800BHP + cars on standard ECU. The issue is that very few people are capable of tuning them.
The only other ECU I'm aware of that is used on V6 or V8 tuned Audis is the Motec which has been used by Dialynx on their race cars.
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Werner Van Loock
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| posted on 24/10/09 at 09:27 AM |
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another vote for VEMS, has got ability for 2 EGT's, 2 knocks and 2 WBO2's, 8 injectors and 8 ignition controls (8 COP's)
So you can run full sequential ignition and injection when using both the cranktrigger and cam trigger.
terms: COP=coil-on-plug, EGT=exhaust-gas-temperature, WBO2=wideband-oxygen
http://www.clubstylus.be
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scootz
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| posted on 24/10/09 at 09:39 PM |
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quote:
Originally posted by jeffw
Someone like MRC Tuning could have tuned the Bosch to work in your kit car at its maximum performance.
Most tuned B7 RS4's merely have the standard ECU's 'tweeked' to suit whatever has been changed... not cheap, but certainly
do-able. Take the engine out of the RS4 vehicle and you are looking at an outrageous amount of time and money to adapt the original ECU to work (if
it will work at all).
Spoke to MRC (and everyone else!) when I still had the Motronic boxes... said they would look at it, but couldn't guarantee anything. Also
indicated that it would cost thousands to investigate what I wanted to do as there was no reference.
Also spoke to all the major stand-alone ECU manufacturers - none of their products could deal with the FSi system in the RS4.
So, the recommended course (by all and sundry) was to ditch the high pressure FSi system and run standard injection via individual throttle bodies -
that way I could use aftermarket ECU's.
PS - Had the 2 Motronic ECU's up for sale for ages... eventually sold for £50! 
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jeffw
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| posted on 25/10/09 at 06:19 AM |
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Certainly the B7 RS4 is not the most tunable engine. It is right on the edge power wise and most RS4s don't make the quoted figure on the dyno,
370-375 seems to be all they make.
MRC did some work on one for a customer and got 420 ish after a lot of work. This is with the FSi obviously.
The V8 twin turbo in the RS6 C5 or the V6 twin turbo in the B5 RS4 or S4 are much better prospects for tuning. The new V6 3.0l supercharged engine in
the B8 S4 and the S5 Cab has possibilities.
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