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Driving Large Injectors With Wolf V4 Ecu

Gareth87

By Gareth87,
in Engines & Forced Induction

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Gareth87 Community Regular

Gareth87

Posted
Posted

Hi all,

Getting the bits together for my E85 conversion but the biggest issue I am concerned about is my ECU. It's an old Wolf V4 and I want to run a 1400cc Ethanol injector.

http://scottyscustoms.com.au/product/1400cc-injectors/

Would like to know a few things.. I spoke to Wolf and they said the ecu should be able to run the injectors, however, they are high impedance and I currently run low impedance. Has anyone used high impedance injectors on this ECU before? Just want to be certain.

2nd.. Will these injectors be tunable down low for idle and low rpm?

3rd.. I run a single 044 now, will it be better to add a second 044 or upgrade to a bigger single pump? any ideas?

I'd like to upgrade the Wolf at some point soon but don't want to go through the hassle of it if I don't really need to.

Thanks for the help,

G

scotty nm35 Grand Master

scotty nm35

Posted
Posted

These new matched 1400 sets idle and cruise fine Gareth, most tuners will be sceptical initially, as they would rather the tried and tested Bosch ev14's, but you will find these tune perfectly using the supplied dead time chart, as long as the Wolf can drive them. You may be able to add a resistor if the ecu really needs a low impedance load (but I doubt it), perhaps check the Wolf forums if a Google search falls through?

How much power are you hoping to make? A single e85 Walbro is hard to pass on, cheap and it will flow 450 odd kw on ethanol, unless you have a surge tank? If so a Fuelab or similar pwm controlled turbine pump may be the answer imo, to combat the fuel heating issue on ethanol especially.

Not sure there is a top feed rail available for the FJ, I am told they sometimes machine the injector tops down and make hose tails to suit the stock setup, otherwise a custom rail may be required for either11/14mm.

Gareth87 Community Regular

Gareth87

Posted
  • Author
Posted

Hey Scott,

Yeah, just trying to get as much info before I go ahead with the fuel system upgrade. If I can run the injectors by just effectively 'plug and play' then that would be great.

Haven't found anything on google yet about anyone running high imp injectors on a Wolf V4.

I hope to make around 500 rear wheel HP. (I make 400 @17psi now on 98) so with boost up and e85 I hope that's realistic.

I run a surge tank so I will look into bigger single external pumps.. Are twin 044s a good cost effective option?

Fuel rail I have found a pre fab kit online.

Any continued info would be awesome, thanks for the input!

G

XRATED Veteran

XRATED

Posted
Posted

I'm driving a set of ID1000's with a wolf 3D V4 plug in. It's ok for a drift car but struggles a bit to controll them nicely at idle/ low rpm part throttle.

If it's a road car, it would be hard to go past a haltech plug in/PS 1000/2000 to controll them nicely.

Cheers

J.

Dasmbo Collaborator

Dasmbo

Posted
Posted

Hi has my car running with a wolf ver 4 plugin ecu with 660cc injectors it was not tuned by a shop but I had problems with idle and partial throttle so I changed the settings and minor change to the injector wiring for semi sequential and the car idled much better and didn't have lots of soot coming from the exhaust but as I say it has never been tuned drop me you email and I will send you the info if you like

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

how's the software like? never played with a Wolf 3D - but it can't be that bad right?

I've tuned a few adaptronic semi sequential ECUs and they idle like stock with lean AFRs and none of this hard to start, stuttering business.

scotty nm35 Grand Master

scotty nm35

Posted
Posted

As long as the injectors are fired in the correct order it should run fine in pairs. If you pair the wrong injectors it will sound very lumpy down low, as they are just spraying onto the back of the valve.

Gareth87 Community Regular

Gareth87

Posted
  • Author
Posted

Thanks for the replies everyone. I think I'll just have to suck it and see.

I'm a little concerned about the wolf driving high impedance injectors however. What happens if the ecu can't run them? Will it cause an issue or fault in the ecu? I have no experience in this department..

STATUS Grand Master

STATUS

Posted
Posted

I'm driving a set of ID1000's with a wolf 3D V4 plug in. It's ok for a drift car but struggles a bit to controll them nicely at idle/ low rpm part throttle.

If it's a road car, it would be hard to go past a haltech plug in/PS 1000/2000 to controll them nicely.

Cheers

J.

its more of an ecu thing. The injectors are fine. There are hundreds of ecus on the market and wolf is still the only ecu we refuse to touch.

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