General ECUs for turbo fueling, help me please (used search)

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General ECUs for turbo fueling, help me please (used search)

Xsisley

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im about to turbo charge a 1242 16V engine.
fairly low blow.

im using a garrett t15 with a 1.2 or 1.3mm decompression plate.
i want to have around 7-8 psi max. so not high boost.
i will also be fitting an intercooler and oil cooler.

my question is !!!....
how do i increase fueling when the turbo is on boost?

do i have to run the car on a completly new ECU. (megasquirt/emerald etc...)?
or can i just have a little fueling only ECU which recognises boost ?

theres no way of getting a little more fuel when on boost from my standard ecu right ?

thanks people ! all help VERY VERY appretiated.
aran.
 
you can use a piggy back type controler for the additional fueling and still retain the origional ECU for example the aquamist MF2 (as used in the VAD SPI setups) so you don't have to go as far as a full custom ECU. As far as i know the origional ECU cannot be tweaked on it's own for a turbo application.

I know tricker used a highbred setup on his turbo using a combination of the spi and mpi setup to provide the extra fueling but that was SPI with the MPI providing the additional fueling but i expect it could work the other way around too. if you want to just use the origional or larger capacity injectors alone to supply fuel then i suspect custom ecu is the only way.


Your welcome to come at look at my turbo setup if you need inspiration I'm only just along the M62 but mine is an 8V SPI
 
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For a MPI set up like you will be using on a 1242 16V then I would use the Dastek UniChip piggy back controller if you don't want to go full hogg and go standalone ECU. These are used with great success on supercharged Ignis's running Rotrex chargers and fairly low boost of upto 0.5bar (7PSI) on standard compression on 10.1 which is higher I believe than the 1242 16V is, though could be wrong on that.

The benefit of teh Dastek is it has I believe turbo bost control as well as injector control.

http://www.dastek.co.uk/unichip.htm
 
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MF2 will do it, although there are smarter alternatives about. If it's MPI I'd look at going Megasquirt (maybe Kristian will build you one!) or Emerald, otherwise you're going to have to build a plenum chamber for the extra injectors (I think).

My own view is that MF2 isn't really up to the job of handling the whoops factors turbos seem to encounter from time to time.
 
ok , very helpful

what is a 'plenum chamber' ?

so from what i understand.
i will use a 5th injector mounted somewhere near throttle body opening.
i need a 'plenum chamber' (what ever that is ! )
and i need a piggy back ECU

that all sounds fine.

so what rough costs am i looking at ?
for the
MF2
and the dastek unichip. (seemed to be £399 on site) but is that fitted/tuned ?
becuase some are on ebay for £40-£80

http://cgi.ebay.co.uk/dastek-unichip-piggyback-ecu_W0QQitemZ130194239295QQihZ003QQcategoryZ32094QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
is that ok, and can i ONLY get this set up by a dealer ?? or any RR place ?

this one comes with boost module ?? any good ?
http://cgi.ebay.co.uk/Dastek-Unichip-and-Boost-Module-Piggyback-ECU_W0QQitemZ190195339793QQihZ009QQcategoryZ32094QQtcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem

oh and also. what are peopls veiws on bleed valves ? on th little actuator pipe ?good ?bad?ugly ?

thanks guys.
aran.
 
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The 1368cc n/a run a CR of 11:1


The 1368 turbo units run a CR of 9.8:1


The 1242 16v sits roughly in between with a CR of 10.6:1


It may be possible with proper setting up to run without decomp plate like Aaron suggested.

Another alternative is to get your block bored out to 72mm if feasible, and uses the FIAT bravo T-Jet pistons (y) Think they are about £200 iirc, you can use eper to check. Not sure how much a decomp plate costs, but i'd imagine this would lower CR a bit, and be a more reliable solution.


If a piggyback is £399, and you haven't fitted the ecu etc yet, I'd seriously look at one of the many aftermarket ECU's.


Kristian
 
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The bravo t-jet 150 is diesel?!!?! Thought its was a 1.4 petrol???? The same that will be going in some 500's in the future.

With a CR that low I doubt it's diesel, would be more like 17:1


//edit - i'm right, the t-jet 120 and 150 are both turbo's 1368's. Could get it rebored, and swap the crank, for greater capacity and lower CR. I guess the crank is longer trow, but block looks identical height, its pretty much identical to the 1242 16v block me thinks.
 
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ok , very helpful

this one comes with boost module ?? any good ?
http://cgi.ebay.co.uk/Dastek-Unichip-and-Boost-Module-Piggyback-ECU_W0QQitemZ190195339793QQihZ009QQcategoryZ32094QQtcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem

oh and also. what are peopls veiws on bleed valves ? on th little actuator pipe ?good ?bad?ugly ?

thanks guys.
aran.

Yes looks like the correct item for your requirements.

Bleed valves no, just no, the Dastek controls boost, as will just about all the aftermarket ECU's.

OK Dastek if bought new is not much less money than a aftermarket ECU, but and its a BIG BUT using a piggy back ECU like Dastek is very clever as it not only controls the boost, extra fuelling but it also intercepts signals from the original ECU and when mapped will retard advance ignition curve etc and as using original ECU all the difficult stuff like cold start mapping, idle control are already taken care of so money is saved later on in reduced mapping/rolling road costs.

Using Piggy back is also simpler in terms of wiring as with after market ECU's you will need to open up all the wiring loom tracing everything then making up new loom etc, very time consuming if at the end very satisfying to do.

These are the reasons many after market supercharged Jap cars use Dastek.

Aaron.
 
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like i said, what ECU are you plannig to use to run the engie? If you are running it in a cento, or a panda with EFI and planning on using an SPI ECU on the 16v engine then i'd forget it and just use an aftermarket for the whole setup.
 
like i said, what ECU are you plannig to use to run the engie? If you are running it in a cento, or a panda with EFI and planning on using an SPI ECU on the 16v engine then i'd forget it and just use an aftermarket for the whole setup.

Cars already running if its the one I am thinking off from Brooklands last year, so already running 1.2 16V ECU IIRC.

Otherwise I'd go with you and run standalone without shadow of doubt, but as he has done work already getting it running on the standard ECU then Dastek seems good option.
 
Cars already running if its the one I am thinking off from Brooklands last year, so already running 1.2 16V ECU IIRC.

Otherwise I'd go with you and run standalone without shadow of doubt, but as he has done work already getting it running on the standard ECU then Dastek seems good option.

Nope, that was my Panda:devil:, but Xsisley's Panda conversion is much the same and is currently running with the 1.2 16v ecu (18F)(y)

If I was doing this (rather than fitting a Honda Vtec to a Panda;)) then the microsquirt ecu at $400 would be my choice with the current $ to £ rate.
 
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