Are they plug and play with stock rails?

 

Plug?..I think the connector needs changing...I "think".
Play,yes they fit with 11 mm bore.They also have 14mm top hats too.
I got 1000 and 2000 on my S5 TII and I know ONE set of connectors I had to change,the other set uses the regular S5 type connector.
When I went through a whole "change up" on this car I had the wiring harness setup for S4.I was able to get adapters for the Connectors,rather than wire them in.
So you can get S4 to S5 Type or S4 To ID.

 

S4 and S5 cars both use different connector types for the injectors. However, ID's dealers offer the correct plug and play adapters for approximately $25. You can call them or use their site to order.

 

FUEL INJECTOR CONNECTION - FIC FLOW MAX 750cc Mazda

No top hat needed, comes with the pitails to wire in, plug and play and EV14.

 

Whats the set up on the car?
Turbo, na, what ecu?

 

Just a stock turbo with exhaust, street port and a rtek 1.8

 

Yes they are plug and play if you order the correct combination of height and upper/lower o-rings. You will also need adapters or wire in new connectors on your engine harness as they use USCAR connectors, and S4 are EV1, and S5 are denso.

If you need ID injectors we sell them, and know what to get you

 

if upgrades are planed for the future go with larger secondaries, you should be able to tune them really stable with your current set up and you will have room to grow

 

the bottom cushions didn't seal very well on mine (they were too small) so I got some of these and they fit great:

FC Lower O-ring Inserts | Full Function Engineering

Or if you don't want to spend the money you can just try to cram the stock cushions on them... but if they're 25 years old that's not really going to work...