GavR
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 posted on 15/4/10 at 11:46 AM |
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Majour Problem!!! Help!!!
Majour Problem! Help!!!!!!
Hi All,
I have a serious problem.
I have an MK Indy with a 2.0l Ford Zetec engine running r6 throttle bodies. The ECU is an early version of megasquirt.
Ive been having problems with the car running lumpy, so I took the car down to my local motorsport garage and they found that it was running on 3
cylinders.
They cleaned the plugs and did a compression test on it and everything was fine and back to normal.
They then put it on the dyno to investigate what could have caused the problem in the first place.
This is what they have told me:
My car is seriously overfuelling and cannot be mapped. The problem is that the Megasquirt is a an early version and is not able to register a throttle
position sensor becuase it is trying to read from a map sensor.
This really goes straight over my head so I need some help!
There solution is to:
*Replace my Megasquirt ECU with an OMEX 600
*Add something like a plug and pin?
*Re-map it
Total Cost £1400(roughly)
Is there any way I can solve this without costing an arm and a leg??
Can't I just upgrade my megasquirt?
Any suggestion would help
Cheers
Gav
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flak monkey
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| posted on 15/4/10 at 11:50 AM |
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All megasquirt supports a TPS, and its not a major job to fit one.
Fuelling can either be done from TPS or MAP and when on throttle bodies TPS is usually best.
You may need to add some wires to the connector and a TPS to your throttle bodies if there isnt one fitted already.
The TPS connects to pins 22, 26 and a ground.
David
ETA if your TPS is already connected then you just need to change the fuelling algorithm in the configurator in megatune (File >Configurator) to
alpha_n rather than speed_density. This will change the load in the fuel and spark tables to be TPS based. You will then need to totally remap the
engine.
[Edited on 15/4/10 by flak monkey]
Sera
http://www.motosera.com
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matt_gsxr
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| posted on 15/4/10 at 11:52 AM |
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"Alpha-N" is what you want to be looking for on the MS website.
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iank
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| posted on 15/4/10 at 11:57 AM |
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Sounds like a garage trying to make £1400 out of someone who doesn't know they are spouting BS.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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flak monkey
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| posted on 15/4/10 at 12:00 PM |
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Oh and an omex is about £650, plus wiring loom at about £100 then expect to pay around £300 for mapping from scratch. Then plus fitting of course.
David
Sera
http://www.motosera.com
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matt_gsxr
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| posted on 15/4/10 at 12:13 PM |
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To be fair to the garages, Megasquirt is a nightmare for them. Each install is different, help is available but is provided on an ad-hoc basis. Lots
of the problems are due to dodgy installation. There is a lot of learning to do, and the people who fit it are budget concious.
These guys probably just don't know about MegaSquirt, and don't want to know. I am sure an OMEX set-up would work pretty well. But
assuming someone on here has a map you should be able to get going for less than 1400p (let alone £1400).
Matt
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GavR
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| posted on 15/4/10 at 12:22 PM |
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I budgeted abit of money but not 1.4k, I just want it sorted before stoneleigh
shall I let the garage do the work or try and solve it by other means.
I'm going to contact the garage and ask them if they can do what you suggested David to see what they say.
They told me that they don't do alot with megasquirt and had problems trying to find the software to communicate with my version so they might
not want to fiddle with my megasquirt.
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rayward
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| posted on 15/4/10 at 12:35 PM |
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even if you do have an older version of megasquirt the current version should be a plug in job and would cost around £250 - £300 + the cost of fitting
TPS
hth
Ray
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Fatgadget
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| posted on 15/4/10 at 12:36 PM |
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quote:
Originally posted by matt_gsxr
To be fair to the garages, Megasquirt is a nightmare for them. Each install is different, help is available but is provided on an ad-hoc basis. Lots
of the problems are due to dodgy installation. There is a lot of learning to do, and the people who fit it are budget concious.
These guys probably just don't know about MegaSquirt, and don't want to know. I am sure an OMEX set-up would work pretty well. But
assuming someone on here has a map you should be able to get going for less than 1400p (let alone £1400).
Matt
I concur 100% with your prognosis fella.Stuff like Megasquirt is NOT plug and play!I fix electronic $hit for a living.Sometimes I get home brewed
stuff in for sorting out and 9 times out 10 it's bad soldering..not following design rules..basic stuff like that.And its time consuming to sort
out therefore.££££.
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atspeed racing
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| posted on 15/4/10 at 12:58 PM |
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we have a customer with a megasquirt fitted to his race car.
before he bought this he asked us what we thought he should buy, we told him to invest the money in a omex.
customer of course knew better so bought the cheaper megasquirt.
after problems he has had with his initial set up, us fixing the problems, tuning the car etc it would almost have been the same money to go down the
omex route instead.
moral of the story - the cheaper option is not always the cheapest option in the long run.
an ecu is only as good as its software.
i work on all types of ecu system 6 days a week, the omex is by far my favourite. easy to use, fast to map, excellent customer back up.
- colin.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Jenko
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| posted on 15/4/10 at 02:56 PM |
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In defence of MS - It really is usually down to the install.......Assuming of course you buy a tried and tested MS.
MS can do almost exactly what the other ECU's can do, but it does require more work, and the set up does require some level of
understanding.....But if you are willing to put in the work, understand it and spend the time doing things correcty it works fine.
MY BLOG - http://westfieldv8.blogspot.co.uk/
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Tiger Super Six
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| posted on 15/4/10 at 04:59 PM |
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I ran a Zetec and bought my OMEX from Raceline, they provided it with a map already installed so it was just the cost of the ECU and wiring loom -
them wire it in yourself.
It's a wire to a switched positive, one to earth and then plug all the cable where they go (as said, you will need a TPS though, Raceline will
also provide this).
HTH
(That's the get it fixed for a reasonable cost before Stoneleigh option)
Mark
Tiger Avon
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MikeRJ
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| posted on 15/4/10 at 05:12 PM |
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quote:
Originally posted by atspeed racing
moral of the story - the cheaper option is not always the cheapest option in the long run.
an ecu is only as good as its software.
I'd say the moral of the story as a customer is to understand what you are buying and what support you will need.
The software for Megasquirt works perfectly well as long as you have a good understanding of how to use it. However it's flexibility means it
is far from a simple, easy to learn system. It is meant for (and designed by) enthusiasts who want to get involved with installing and calibrating
their engine. If someone wants a plug and play package then MS is not for them, and they would be daft to buy something that is not supported
locally.
You prefer OMEX, but there are undoubtedly people who could map a MS system just as quickly because they have the experience to do so.
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MikeRJ
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| posted on 15/4/10 at 05:15 PM |
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quote:
Originally posted by GavR
I have a serious problem.
I have an MK Indy with a 2.0l Ford Zetec engine running r6 throttle bodies. The ECU is an early version of megasquirt.
Ive been having problems with the car running lumpy, so I took the car down to my local motorsport garage and they found that it was running on 3
cylinders.
I've just re-read this and wondered if you could clarify something:
Is this an existing EFI installation that used to work fine but suddenly something has gone wrong, or is it a new installation that you are having
problems calibrating?
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brianthemagical
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| posted on 15/4/10 at 05:45 PM |
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Do you know which version of MS you have?
Are you any good with computers? If so you could install the software and find out, it would help solve the problem no end.
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GavR
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| posted on 15/4/10 at 07:38 PM |
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I don't know which version of MS it is all ive been told is that its a early version.
Ive only had the car a few months, I bought it fully built (Original builder was Tim Windmill)
To be honest I havent run it that much, id say ive done around 200miles in it since ive bought it.
Its been running rich since i bought it.
I changed the plugs a few weeks ago and they where extremely black, I think its being overfueling for a while now.
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paulf
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| posted on 15/4/10 at 08:20 PM |
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All versions of the megasquirt had a throttle pot but it may only be set up as a map sensor with TPS for acceleration enrichment and flood clear
functions.
I run a zetec using a MS1 v2.2 which is the old basic version and originally had it set to use the map sensor with reasonable results but then changed
to Alpha N using the throttle pot .
You need to reconfigure the tuning software as Alpha N in the set up screen and would need a basic configuration to get it started and then could
either learn about megasquirt and tune it yourself on the road using data logging or find someone willing to MAP megasquirt.
The reason it is running rich enough to foul the plugs may just be basic settings such as injector ratings, warm up enrichment or fuel pressure .
Paul
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mad4x4
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| posted on 15/4/10 at 09:34 PM |
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Have a look here loads of Infromation
MSwebsite
Megasquirt Manual
Software
Scot's do it better in Kilts.
MK INDY's Don't Self Centre Regardless of MK Setting !
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brianthemagical
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| posted on 15/4/10 at 09:39 PM |
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quote:
Software
TunerStudio is where it's at.
[Edited on 15/4/10 by brianthemagical]
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mad4x4
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| posted on 15/4/10 at 10:01 PM |
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thats the one I was looking for
Scot's do it better in Kilts.
MK INDY's Don't Self Centre Regardless of MK Setting !
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brianthemagical
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| posted on 15/4/10 at 10:06 PM |
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The best thing about it in this situation is it auto detects the code. And it looks pretty.
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rayward
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| posted on 16/4/10 at 06:40 AM |
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is it the Grey MK Tim built ???
if so i built the MS in that, and its defiantely not an old version
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GavR
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| posted on 16/4/10 at 10:20 AM |
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Yes it is the grey Mk, I have gave them the go ahead to change the ecu and remap it. The megasquirt will be for sale. I'll put it on the for
sale forum when I recieve it back 
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GavR
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| posted on 16/4/10 at 01:08 PM |
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Thank you for all your help and suggestions
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