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The mkiv Supra Owners Club

Injectors question - advice please


Dragonball

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I got some from the states $160 plus 40ish shipping....Maybe i got lucky

 

I plan on having them checked despite the assurance of low mileage..

yes you'll need a resistor pack ... and a fuel comp to trim the fuelling

 

Pete Betts has the info on his site and i believe IanC has documented the procedure too

looks straightforward enough.......

 

costs i dunno ..... i do all my mods , so have no ideas on labour costs. I'll post price 0f resistor pack when i get mine...

 

 

HTH

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$300 sounds great, but you don't need another fuel rail, they jam into the j-spec fuel rail (if you use a hammer). SupraStore.com have a set for $250 at the moment by the way, if you want to chance them.

 

You need a resistor pack and you need a bit of 7-core cabling plus connectors to wire the resistor pack into the engine loom. I sparky'd this up myself using stuff from the Vehicle Wiring Products catalogue. You'll see what I mean when the piccies are uploaded, hopefully :)

 

I don't know what mods you have already, but don't forget the fuel pump, and some method of trimming the fuelling.

 

Also, get the injectors ultrasound cleaned and flow tested - CW did mine for about sixty quid and one of them needed it, money well spent. These were brand new as well!

 

-Ian

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  • 2 weeks later...

very usefull ive copied that for future reference , what i need to know is

1 how much power are 550 injectors and uk pump good for.

2 if i were to fit even bigger injectors and pump for use at a later date would they work ok before any other mods

3 once fitted is the FCD enough to regulate the fueling

 

my car at the moment has a blitz back box,sequential BOV,HKS induction kit and a HI/LOW boost box thingy , im going to remove the cats and fit a FCD and FMIC will i gain anything by fitting the bigger injectors power wise or just safety wise , thanks .

John:stupid:

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1. around 500hp

2. yes, but u d need a fuel computer of some kind to remap it, and maybe uprated fuel lines and rail

3. no, the fcd only raises the level of boost that fuel cut occurs.

 

u aint gonna gain any power with bigger injectors at this stage, unless yr underfueling.

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