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  #1  
Old 22-03-2011, 11:25 PM
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gtirobbie gtirobbie is offline
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Default ECU upgrade
I'm thinking about upgrading the ecu on my 1994 Sti v1 to a mappable one, can anyone recommend a good one to get? Also would mine be a 3 or 4 plug ecu?
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Old 22-03-2011, 11:42 PM
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Budget ?
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Old 22-03-2011, 11:49 PM
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Hadn't thought that far ahead, not too expensive, I've just bought a front mount intercooler and I've read up that you need a mapped ecu to be able to run it?
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Old 24-03-2011, 08:19 AM
gtiteen gtiteen is offline
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If you're going front mount and remappable ecu you might as well get some injectors and a fuel pump.

Can't help with which ecu tho. I'm jealous!

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Old 24-03-2011, 08:29 AM
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Power FC or Simtek if you want the pops and bangs
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Old 24-03-2011, 09:26 AM
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ECU upgrades aren't cheap, but well worth it.

Its a must if you are going to mod the engine in any way
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Old 24-03-2011, 10:03 AM
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Quote:
Originally Posted by gtirobbie View Post
Hadn't thought that far ahead, not too expensive, I've just bought a front mount intercooler and I've read up that you need a mapped ecu to be able to run it?
Which front mount did you get mate? Often thought of getting one myself.
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  #8  
Old 24-03-2011, 10:17 AM
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Simtek with 2 maps and an anti lag!

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Old 24-03-2011, 05:48 PM
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I've just bought a HDI Developments fmic, warlbro 255 fuel pump and will be getting 440/550 injectors, will I really need a ecu upgrade??
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Old 24-03-2011, 05:49 PM
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Yes. All 3 of those are best to have the ECU with
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Old 24-03-2011, 05:54 PM
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Even though my ecu has been chipped? If I was to fit all these bits to my car will it still be ok without a ecu upgrade?
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Old 24-03-2011, 05:57 PM
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Nope, its going to confuse the ecu and the gain wont be much at all
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Old 24-03-2011, 05:59 PM
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All depends on what the chip has been programmed for.

I had the same mods on my scoob, didn't have it mapped and it always overfulled and ran rough
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Old 24-03-2011, 06:00 PM
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Ok so it's looking expensive lol, the gains will be worth it though I'm guessing?
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Old 24-03-2011, 06:44 PM
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Give Simon (JGM) your spec and ask him, im sure hes mapped loads like yours with the same mods
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Old 24-03-2011, 06:44 PM
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can be
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  #17  
Old 24-03-2011, 07:46 PM
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From what I understood with those mods on the TD05 turbo could be around 350bhp. I wouldn't hold me to that though.

When you've got it all done you'll have to take me out in it!!

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Old 24-03-2011, 08:03 PM
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Yeah mate I will do, I've just got a pile of parts to put on the car Inc changing the look slightly so il bring it round when it's done! You got your AMG yet!?
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Old 24-03-2011, 09:41 PM
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1. ESL Phase 2 Live mapping board £295 + £200-£250 for mapping
2. Apexi PFC £450 approx 2nd hand (as discontinued and cannot get new) + £200-£250 for mapping
3. Simtek approx £1000 fitted and Mapped
4. Simtex with Anti-lag/Launch Control approx £1200 fitted an mapped

To get decent gains out of any of those you will need at least :

440cc injectors and FPR, or 550cc injector
3 bar map sensor

For the sake of £70 a Walbro 255 Fuel Pump is also recommended.

Without the 3 bar map sensor you are limited to around 1.2bar, upto approx 310BHP max.
With the 3 bar and injectors on the TD05 turbo you can run 1.4/1.5 bar, upto 340/350BHP

All the above assumes the car is already decatted and running improved induction filtration.
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Old 25-03-2011, 05:39 PM
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Awesome cheers for that! By doing just the fuel pump, injectors and map sensor would that make a difference?
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Old 25-03-2011, 08:32 PM
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you cant simply change those things (apart from the f/pump) unless your ECU is able to control them and re-calibrated to suit
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  #22  
Old 25-03-2011, 11:34 PM
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Quote:
Originally Posted by gtirobbie View Post
Awesome cheers for that! By doing just the fuel pump, injectors and map sensor would that make a difference?
As Alyn has said.

Also, and often a misconseption, more fuel does not equal more power.
If you do the above it will run rich and loose power and the map sensor will cause the boost to be uncontrolled.

Think about it ..........
what happens if you open a door to a room that's on fire ?
you get a sudden increase in fire intensity/backdraft/explosion
Have you added any more fuel ?? no just air.

what does a Turbo do ??? a controlled version of the above.
the fuel is only there for the initial ignition, then to cool and lubricate. when increasing power its only there for additional cooling and lubrication required for the bigger bang.
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Old 26-03-2011, 09:48 AM
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All kinda obvious really lol, I apologise for being uneducated in the scooby world, I think I'm going to go down the ESL route, I just need to find somewhere that can possibly supply and fit
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  #24  
Old 26-03-2011, 08:51 PM
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Esl boards in stock

The early cars vary a lot on actual power figures but plenty to gain having it mapped.

Simon
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  #25  
Old 26-03-2011, 09:14 PM
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All kinda obvious really lol, I apologise for being uneducated in the scooby world, I think I'm going to go down the ESL route, I just need to find somewhere that can possibly supply and fit
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Originally Posted by Jolly Green Monster View Post
Esl boards in stock

The early cars vary a lot on actual power figures but plenty to gain having it mapped.

Simon

And theres your answer

JGM all the way
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  #26  
Old 26-03-2011, 09:27 PM
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Esl boards in stock

The early cars vary a lot on actual power figures but plenty to gain having it mapped.

Simon
Awesome, il be in touch very soon!
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