i am still in the process of installing this and instead of asking the odd specific question i hope to group them all here so anyone with experience of fitting WI please pipe up!
i've a rev 2 turbo with TD05 and a Greddy IC. this stems from a dyno run last year that the tuner said my intake temps where dangerously high and i should get octane booster and a boot mount IC etc but after some research i found water injection to be the way to go. i'm planning on full water for now i might go 50/50 meth down the road but for now i just want cooler intake temps. i've also fitted a shroud and spal fan since.
first off i bought the Aquamist system. after researching around i decided something like water injection should not be scrimped on and although it is a big one off expense i hope to have peace of mind that it is a good water delivery system with failsafes and good support from Richard at Aquamist.
i'm doing this at weekends when it's not raining (rare in Ireland this time of year) so bear with me. ok so an update of where i'm at:
i removed all the carpetting from the boot to expose the bulkhead. there's plenty of space to install the tank and pump next to the ECU. i'd recommend getting the optional water tank and bracket.
drill 4 holes in the bulkhead for the bracket. i had a couple of straps (2 short and 2 long) that came in handy. please excuse the bolts...
then fit the tank and then the water level and feed to the pump:
then 4 holes for the pump bracket:
then install the pump. the pump inlet and outlet must be below the tank outlet
i am test fitting everything before i put the carpet back in. i'll know soon if this is a good idea or bad...
i have fitted some tubing and located where the FAV (fast acting valve) and flow sensor are going i just need to fit them. pics to follow
i'm at the stage where it's time to start wiring up the control unit. below is what i proposed to Richard at Aquamist for the wiring and he said it was right:
4 way connector:
red - fused - switched positive (red lights ignition)
black - ground
white - ground
purple - lights
all at fuse box in compartment or engine bay.
ECU Grey RJ48 Connector:
red - to IGT (Igniter) switched positive (red lights ignition)
green - to #1 (Injector) pulsed ground (hopefully, will check with multimeter)
blue - to PIM (Map sensor) 0-5v signal wire.
these wires are just joined 'Y'
failsafe:
cut TPS wire (turbocharging pressure VSV):
white - to ECU side
brown - VSV side
all these are fine except i can't find a pulsed ground injector wire. any i check have a steady 14.1v. i've checked the 4 injector wires from the ECU and even the 2 wires that are physically plugged onto the injectors all a steady 14.1v.
i would like to locate all wiring before i continue and it's just this that's holding me up. any help is much appreciated
also if you have a boost controller it's likely that your VSV is disconnected. i have a Greddy Profec spec B that can be used as a failsafe i'll go through that later
i'll be populating this thread as i go so anyone with any good info please contribute!