This is awesome... The IAT is separate from the MAF, i thought it was not removable.the IAT sensor is integrated into the MAF. spraying before the MAF will destroy the MAF very quickly...
spraying after the MAF will not do much as the IAT sensor would not record the change in temp. only way to drop inlet temps is 1) port the s/c 2) get a new cooler. both wont do much if car is stock boost. if you are running more boost it will make a difference.
Hi Subby. So Hi Would you recommend water methanol injection after MAF sensor and IAT sensor installed properly without leaks post methanol injectors?before you do anything are you sure your ingition timing is actually being retarded significantly? are you running stock boost?
plug in a OBD2 scan tool and log the live data to see. if its not and you are running stock boost spraying will do nothing?
the reason people is spray is to be able to increase timing more aggressivly on aftermarket ecus. some ECUs are smart enough to back off the timing if the water injection system fails or runs low. what do you think will happen if you increase the timing and you happen to run out of water one day?...... potentialy detonate the motor
mounting a new IAT sensor would be hard... drilling a hole in the plastic manifold and sealing it correctly to stop it causing a boost leak... plus it would have to meet the spec of the existing one. also by moving it there it will actually read higher temp values. people in other cars try to remove the IAT from the manifold because it reads a lot higher ther...
Thanks for the info. I've got a W/M kit and haven't fitted it yet (I bought the kit nearly three years!). I'm wondering now should I bother fitting it? But I think I have found the correct standalone IAT sensor that could be mounted closer to the Throttle Body and after the nozzle.Hello!
I run a small meth setup on mine (pre facelift m111, running around 270-280hp)
all of this info is based off my personal findings:
-I use a small 85cc nozzle pre blower (yes it works and no it doesn't mess up the blower since it's only a small amount and the water doesn't puddle up in the intercooler)
-A 180cc nozzle in the elbow before the throttle body, each nozzle has it's own checkvalve to avoid dripping (the 180cc nozzle might be changed to a 80cc one later)
the nozzles I use do an amazing job at atomizing the water/meth mix, it almost instantly turns into vapour
about pre blower injection:
spraying a small amount of 50/50 methanol trough the maf is no problem as long as it has evaporated before reaching the maf, pre blower injection also does a good job at keeping the supercharger intake pipe cool!
I relocated the stock iat sensor into the intake manifold but that responds way to slow, it only picks up the colder airtemps during a long pull. (and the sensor failed very quickly) so I went back to the stock sensor location in the MAF
using meth injection is tricky on the car without extra added timing: spray to much and you lose power (10-20hp loss easy and you won't even feel it) this is because water/meth + gasoline burns slower then just regular gasoline
intake air temperature: I try to keep them at ambient, temps below ambient are possible tho!
Carefull engine power measurements need to be taken to get it setup correctly or you lose power.
I have my system set up so it adds a bunch of torque down low and keeps the air cooler in high rpm's under boost so no power is lost on very hot summer days,
this gives winter performance on hot summer days!
my setup uses an analog pump controller hooked up to a facelift m111 boost sensor
For water/meth reservoir I use the windshield washer tank (it's a perfect size for it)
I don't recommend water/meth injection on a single pulleyed car or installing it blind without measurements, nozzles also need to be picked very carefully and setting this up correctly without a special tune takes a lot of time and measuring
here you see a pre-blower nozzle located in the supercharger intake pipe, the pipe has insulation around it to shield it from exhaust heat (check valve out of view)
and a nozzle + check valve on the elbow just before the throttle body
Thanks John,Just brilliant Ndrmini. 284 BHP! I'm guessing the driveabilty of car has really improved including great 'in-gear' acceleration?
Hell, I would be very happy with 'just' another 25 BHP. I had to work a bit to out pace a 2018 Golf GTD the other day on the motorway...
Keep up the good work.