Hi folks,
My 1900 k series is almost complete, the spec is as follows:
VVC head ported by DVA
285H cams
45mm throttle bodies.
I read on Dave’s website that the standard (orange band) injectors are good up to 200bhp.
So, I have managed to find and buy some Rover T Series turbo (blue band) injectors today.Part Number MJY100460.
Apparently (by searching the internet) these flow 380cc/min…are these slightly overkill?
The Rover 620Ti makes 197bhp as standard…I think you can see my logic here.
Any advise would be appreciated.
Ben.
A bit on the big side. It should run OK, but it might idle a little rough. Getting the emissions right at idle could be tricky.
Thanks for the reply, I’m assuming that there is nothing in the Emerald software that can help the idle? I havent used the software for some time but im sure that there is an injector flow rate tab??
What sort of power level are you hoping for?
I know there’s many injector size calculators on the net and while they do come back with consistent answers, are they actually accurate or has anyone got a better system? The BSFC in most calculators is total guesswork for most people.
Injector flow rate can only be based on fuel pressure and pulse length. i.e it would be on the main injection map in the software, I think the options on the idle in the software concern ignition advance and control of an air bypass valve.
There is plenty you can do to improve the idle by changing the MSPB value for the injector, this can allow smaller granularity of adjustment where it most counts.
The stock EU2 injectors are 218CC and good for over 210BHP so they should be OK, if a little close to 100% duty cycle, 380cc is well over the top. You could try some vauxhall 2 litre injectors (these are around 240cc) they are 0280 150 744.
Dave
I’m using 380s on mine. 1800k with 1444s and big valves.
Will let you know how it goes in a couple months 
Perfect, cheers for the advice folks.
Ben.
can i ask how the resistance value effects the injector choice? cheers
Injectors are either low resistance or high resistance (usually more often referred to as impedance in the case of injectors). Low impedance injectors typically measure around the 2 to 3 ohm range, high impedance 12 to 16 ohms. You have to match injectors with the injector drivers in the ECU being used. -Not difficult with there only effectively being 2 types!
Some ECUs are equipped with saturated drivers which can drive high resistance injectors. Some ECUs are equipped with drivers for peak and hold type injectors which are lower resistance. Confusingly some ECUs will even drive both types of injector!
In the case that you have an ECU that can only drive the high impedance injectors, but want to use low impedance ones you can wire in some resistors (usually 2x 2R2s for batch fire mode). Putting the wrong resistors with the wrong ECU will seemingly randomly range from them simply not working to frying the injector drivers.
Everyone suitably confused now?
I think in the case of Lotuses they ALL use high impedance injectors, so stick with getting high-impedance ones and you’ll be fine. You CAN use low impedance ones with ballast resistors as Azrael says, but IMHO this is unnecessary as there’s plenty of choice out there to mean you should be able to find the right injector in the right impedance.
Some top-level ECUS have peak-and-hold drivers meaning they can drive either type well, but this is typcally only on the very high end ones.
i run an emerald and not sure which to go for.
Emerald can only drive HIGH impedance injectors. You’ll need ballast resistors to be able to run low impedance ones. And even then you’ll end up with slow-reacting injectors, at least at low load applications.
Just stick with some high impedance ones 
Pretty sure the very latest Emeralds can run low impedance injectors, but not more than one on an injector driver so you woul need to utilise all 4 injector drivers.
Dave
i was gonna run peugeot turbo injectors, 247cc and 15.9ohms. im thinking thats quite reasonable?