Replacing my current grey wrx injectors for some phase 1 yellow 440`s, looks an easy enough job, remove the caps securing old ones on, remove injector, replace with new yellow one, is it as simple as that LOL ?

cheers

 

Map ..!

 

Easy enough to change. make aure they are seates properly. Your car will be running quite rixh if the ecu doesnt know about the change so will need mapping. If you havent bought the injectors yet then u might be better off getting some phase2 440s and the adapters to fit as the newer ones have a better spray pattern i believe.

 

The classic injectors are side feed therefore the fuel pressure is between the top and bottom orings. The biggest issue with fitment is damage to the bottom oring as then the fuel leaks direct into the inlet manifold and gets sucked straight into the cylinder which can cause various issues and cannot always be noticed.

Tend to find the old ones can be strubbon to remove, twisting them to release the rubber seals grip on them before trying to remove tends to help. Also worth draining the fuel rails so it doesnt pour into the inlet/sit on the back of the valves/cylinder.
Adding silicone grease to the seals before fitment and use new seals and push them in, dont use the top cap to wind them in, usually fitment is then good.

You can check the bottom oring is sealed by removing spark plugs and injector plugs and unplugging coilpack and crank sensor (so no spark) and spin the engine over to check no fuel is leaking and being blown out the plug holes.

Simon

 

Already bought the injectors and they are in for an ultrasonic clean etc as we speak, £60.

Cheers for the removal guide :-), i think i will try and use the old seals 1st as new seals for all 4 is knocking on £50 again so its turning into an expensive mod for my remap lol

i was going to use red rubber grease to lube up the seals, is that o.k to use ?
cheers