Guys,
I want to upgrade my injectors and I see there are several options out there. I'm on a tight budget and want to make sure I make the right decision.

So far I've found OEM JCW, Remanufactured stock (by m7), Siemens, Bosch, ebay (small brands)...

The mods I have so far are: CAI, 15% pulley, MSD coil and wires, m7 thermostat, one ball. I am planning to add: header, catback, 0% crank pulley and a custom tune at some point.

So basically, I understand the mods I want to end up with do not have super high flow demands, and I want to buy something that will work fine until I get my custom tune, which I want to do at the end.

Last, I would also like to consider some used, low mileage 380+ injectors, weather they are JCW or other reputable brand. Would this be a mistake? Would I be at risk to get worn out parts??

 

The jcw ones are the ONLY ones that can work without a tune....
the extra fuel flow they provide is pretty modest....
They are oem quality/price, and the correct spray pattern+plugs.
others can work...
Just stay away from the e-bay redrilled/laser cut/etc ones....mostly junk...stick with a known brand/vendor that knows what works in a mini.
With your goals the rmw injectors would be good....fuel for future mods....but require a tune....as do all injectors bigger than the jcw's...
some say the jcw+15% is a bit too rich no tune...
It seemed pretty good with the 17% no tune....and got better with a tune from my experance, and with my mods, could have used a bit more fuel...
But for my goals, I got what I wanted, and am happy....better mpg, more power+tourque, improved drivability, and no worries of running too lean/rich and the associated issues.
The tune was hard to justify $$ wise, but I am happy I did it.

 

Thanks for your comprehensive answer. So it looks like 380's are the ones for me.

Anybody out there want to upgrade their JCW injectors and put them up for sale?