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It does help a quite a bit mate, all that's why the propr turbo's use them Evo 2 onwards had intercooler spray, and the later Subaru's

I've seen a fair few people do this mod using a wind screen washer?! jet type of set-up which works well


WMI is good on paper, but I'm kind of sceptical of the true benefits and it's price, it's pretty much the same effect, keeping temps down. That said, I'm still looking in to this and it does seem to be a good modification to do.
 
WMI is good on paper, but I'm kind of sceptical of the true benefits and it's price, it's pretty much the same effect, keeping temps down. That said, I'm still looking in to this and it does seem to be a good modification to do.

As far as the effect of WMI is concerned I went from 413WHP(27psi) to 486WHP(32psi) with WMI as I could add boost and timing safely.

Best thing ever ! :D
 
The difference between WMI and spraying a bit of water from a washer jet onto your intercooler is phenomenally different. If you are going to do it, do it properly and get a co2 spray bar. But still, I wouldn't bother unless you were running megga boost.
 
dont buy that kit remove the rear washer sprayer pipe by the washer bottle tank run some line along the front of the car get some fan washer jets and mount them does exactly the same thing for hardly any money at all