mr2 turbo fueling
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Discussion

gar-type-r

Original Poster:

146 posts

219 months

Monday 14th April 2008
quotequote all
quick question to those who are smarter than me,

im living in ireland and we can only get 95ron petrol, is it possible to re-map a rev-5 mr2 turbo's standard ecu to run on 95ron safely? and if so who does it or do i need an aftermarket piggy-back?

thanks in advance

Diceman

50 posts

223 months

Monday 14th April 2008
quotequote all
Unfotunately the Toyota ECU is not re-programmable. You could try getting a UK ECU which will not be as aggresive - I think the ECU pin outs are the same (check with MR2 guys as I am from the GT-Four world!).
Alternatively get yourself a Apexi Power Fc and get it mapped. you are probably looking at £800 for that though.

Herman Toothrot

6,702 posts

221 months

Monday 14th April 2008
quotequote all
or LINK G3 is very popular and has effectively superceeded the power fC is its no longer manufactured for the MR2. see Rogue motorsport website.

gar-type-r

Original Poster:

146 posts

219 months

Monday 14th April 2008
quotequote all
nice one at least i know what im lookin for now anyway

Red Devil

13,440 posts

231 months

Tuesday 15th April 2008
quotequote all
You could do a lot worse than try asking here

http://www.mr2oc.co.uk/
and
http://www.imoc.co.uk/

Both have members in Ireland who may be able to give you some specific pointers relative to that country.
Turbos are pretty rare over there though for the reason you have posted.

As Diceman said the stock ECU is not reprogrammable. JDM turbos were designed to be run on 100RON jap fuel.
The problem with 95RON is it less resistent to knock so the sensor is much more likely to pull the timing to safe mode.
Why have a turbo and lose most of the performance? You might as well have an N/A in the first place!smile

Personally I can't see how swapping to a UK ECU would be any good as that would be from an N/A.
It will not have been designed to go on a turbo and the mapping would be quite different.
Not only that, it would not be programmable either!

You will be paying ££ for a programmable one unless you are lucky enough to find a decent S/H one on E-Bay.
If you do go down that route, make sure that whoever remaps it really knows what they are doing.
I suspect you may struggle a little though as they're fairly thin on the ground over here frown
The last thing you need is to run too lean. Det will kill a turbo quicker than you can say "Hai"

Herman Toothrot

6,702 posts

221 months

Tuesday 15th April 2008
quotequote all
From what I read there are not any in NI, I know Ryan has been flying over to map cars in NI.

An option for you of course could be to get a UKDM Celica GT4 ST205 Ecu, as far as i'm aware they should be plug & play as such.

Myself, LINK G3 and Ryan or Rogue to map it.

Diceman

50 posts

223 months

Thursday 17th April 2008
quotequote all
Sorry my point about UK ECU was stupid. As you say they don't do one! Used to teh Gt4 - sorry.
Maybe USA ECU?

Still better to get a proper job though.