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The mkiv Supra Owners Club

Running big single and fueling of stock ECU


TRD3000GT

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Ok Im hoping to get a Boost logic T67 single turbo kit and the boost logic fueling system in to my car before May-June and was wondering if I HAD to install an after market ECU to deal with everything before using the car or even starting it?

 

Since all the recent discussions of HKS F-Con pro and AEM are in the air I want to go ahead and order the kit and have it installed but whats the deal with running it off my stock VVTI ECU ?

 

Will it just not work ? Or will I damage anything ?

 

C. :rtfm:

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Yes you do HAVE to get an ECU device.

 

Which one is entirely your choice. I'm thinking you like to do things properly. So I'd recommend the F-Con Pro V or an Autronic SM4. The AEM is a bit of a non starter on the VVTi.

 

If you want to save some cash then we can get the eManage to work on it. Or the MAP ECU.

 

If you didn't fit the fuel system you could drive the T67 on the stock ECU...but you'd be really limited (to about .6bar!)

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I have been seriously considering the F0Con, but the price is bloody steep as I dont think I would want ti witout the Knock sensor which comes in at £1000 :complain:

 

All in to get the F-con installed properly by a tuner with experience and get her running sweet as a nut with the F-Con you should really budget in for £3000

 

Even though I can get the unit and the harness for £850

 

:eek2:

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My eManage setup is not finalised yet, so I'm hesitant to 100% back it. I've had some issues but I think we've come to the conclusion it's mainly caused by a dodgy throttle body on my car. :)

 

What do you think is wrong with it to cause it (the e-manage) not to work Alex?

 

:(

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Noooooooo I've been getting an inconsistancy in the startup...I thought it was the eManage now I think it's the throttle.

But I won't 100% say it's one or the other till it's fixed. But it's a VVTi only issue due to the ETCS-i throttle. I think I've found the solution just need a few more days to test (and some good weather!)

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Guest Terry S

As Alex says the VVTi is not anywhere near as straight forward as the earlier models. ECU upgrades are a bit of a headache if they are to work perfectly.

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Stock ECU, stock fuel system and a T67 I'd say is a no-no unless you stay off boost all the time. Get on boost below 4krpm and it'll go lean, get on boost above 4krpm and it'll probably go lean with low amounts and deffo go lean with higher amounts of boost.

 

Stock ECU, bigger fuel system, T67, you'd be lucky if it idled and it'd run ghastly rich all the time, so I'd say no again.

 

Unless you were driving 5 miles to get it tuned, forget it. but it's your car at the end of the day.

 

-Ian

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U know my thought on the BL 67 turbo.

 

Its known as one of the BEST street turbos in the US .. It get you 10 second pulls in 1/4 mile and keeps your car VERY steetable.

 

:respekt:

 

 

A guy on Supraforums is using the BL67 kit and made 562whp/498 ft.lbs @ 24.5psi

 

679whp/576 ft.lbs @ 28.5psi

 

This is through a built toyota tranny.

 

Al98t made 767whp/673 ft.lbs @ 33psi on his PTE67 through a 6spd.

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I have the F-CON V Pro ECU in my car on stock twins and the difference it makes is amazing. As you mentioned before make sure that you get it properly tuned and you will certainly notice the difference. I got mine done at Nemesis Performance and have no trouble with it, so if you are going single then it is a definate that you will have to get a piggy back ECU to cope with all the extra stress put on the engine.

 

Cant wait to see it when its done though.

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I have the F-CON V Pro ECU in my car on stock twins and the difference it makes is amazing. As you mentioned before make sure that you get it properly tuned and you will certainly notice the difference. I got mine done at Nemesis Performance and have no trouble with it, so if you are going single then it is a definate that you will have to get a piggy back ECU to cope with all the extra stress put on the engine.

 

Cant wait to see it when its done though.

 

Can I ask a question as to how Nemesis managed to fit and tune an Fcon V pro when Only HKS PRO dealers can Tune them ? As far as I was aware there is only 5 Fcon pro dealers in the UK and Nemesis aint one of them ?....Suplly and fit maybe but tune ?

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Can I ask a question as to how Nemesis managed to fit and tune an Fcon V pro when Only HKS PRO dealers can Tune them ? As far as I was aware there is only 5 Fcon pro dealers in the UK and Nemesis aint one of them ?....Suplly and fit maybe but tune ?

 

Sorry, should have explained it a bit more, you are quite right Nemesis only fitted the device but it was then tuned by an authorised HKS dealer. Well spotted though.

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Noooooooo I've been getting an inconsistancy in the startup...I thought it was the eManage now I think it's the throttle.

But I won't 100% say it's one or the other till it's fixed. But it's a VVTi only issue due to the ETCS-i throttle. I think I've found the solution just need a few more days to test (and some good weather!)

Strangely enough, I too had the same type of problem on my car (non VVTi) and also had very erratic idling when cold.

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  • 1 month later...
That is not correct Chris about the F-Con. How is the Fly By Wire working with the M800 BTW??

 

They did offer to hook up the FBW with the ECU as it can deal with it..(Extra £350)

 

But I opted for the unit to be converted to a throttle cable unit and bypass the FBW servo and system....

 

This is also so in the future If I want to go with an aftermarket throttle body they all run by direct cable throttle and I wont have to have it converted later on.

 

What statement did I make incorrectly about the V-Pro? As far as I was aware it could not control any of the VVTI functions on the car and they were laft factory?

 

:rtfm:

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Guest Terry S
They did offer to hook up the FBW with the ECU as it can deal with it..(Extra £350)

 

But I opted for the unit to be converted to a throttle cable unit and bypass the FBW servo and system....

 

This is also so in the future If I want to go with an aftermarket throtle body they all run by direct cable throttle and I wont have to have it converted later on.

 

What statement did I make incorrectly about the V-Pro? As far as I was aware it could not control any of the VVTI functions on the car and they were laft factory?

 

:rtfm:

 

So you have lost one of the Two reasons which makes the VVTi a superior car?? :( :eek:

 

Next you'll be locking the VVTi in position :woot:

 

The F-Con can change the shift points on the VVTi if you know what you are doing.

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So you have lost one of the Two reasons which makes the VVTi a superior car?? :( :eek:

 

Next you'll be looking the VVTi in position :woot:

 

The F-Con can change the shift points on the VVTi if you know what you are doing.

 

Why does the Fly By wire make the car superior? Ive had 1 problem in the past with the FBW system which resulted in me loosing all power and no being able to accelerate...

 

Dead in the water...

 

BUT If I decide that I want them to incorpotate the FBW I can always go back and have it hooked up at the extra cost....

 

One other thing is, If I went with say a Veilside intake manifold that unit along with its throttle body would not work with the FBW ,? Right...

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