playing with the idea of water injection, is this something the UTEC can handle?
should be able to monitor a pressure gauge, or at worst the knock sensor would take over if the water ran dry.

 

You can use the solenoid output to engage the water injection, but from what I can tell, nothing any more complex at the moment.. Your water injection system would still have to be configured manually, however you can have it engaged by the UTEC using its solenoid output..

 

hi MJ,
here is a link to the water maker
http://www.aquamist.co.uk/cp/sys2c/sys2c.html
looks like something You could rig up easy enough.

but anyway, looks like a way to reduce richness, and has the effect of increasing octane, ie reducing knock without having to retard ign.

its all new stuff to me, but looks good

 

its been done before evotuner/wrxtuner.com sells a kit that has been used with the utec. turbotrix has installed and tuned one. on a wrx with an 18G it provided an additional 35whp...so i'd figure more on an evo. i'd say gains around 50whp depending upon your tune. plus this kit is proven and only costs 325 with all the accessories.

I'll prob get this kit again.

Josh

 

We did some custom UTEC software for a few guys that used the UTEC's boost control solenoid driver to power their water injection system. We changed the load reference for the "boost map" to MAP so that they could then map their water injection system duty cycle with a MAP vs. RPM table.

I have a few guys requesting this update to the WRX 4.2 software, so i'll ask Pete about it for the EVO as well.

-Nathan
www.turboxs.com

 

nmyeti, any idea when this might be a feature? or should I just have you rig a utec for me...same as above

Bruce

 

then, if the water runs dry my thought is to have a temp sensor before and after the injection. when they start reading the same I have it throw a cel so I know when to flip to stock map or get water.

 

The trick is to try to get everything to work together.. Ultimately if you ran out of water, you would want it to automatically drop the boost.. which may not be possible using that method since you've relegated boost control to a third party controller.. Though in theory, you could use a 2 stage MBC that uses a switch and let the UTEC relay output switch between the two.

I plan on using water injection, however I plan on using the UTEC's relay output to enable it, and let its built in settings control the boost level and duty cycle of the WI Solenoid, again, it has the same inherant problem, if you run out of water, you run the risk of damaging things at really high boost..

I would like to see the relay output be converted to provide a solenoid duty cycle (PWM Output) and have its own map page dedicated to it the great thing about that is you can still use it to control the standard relay output if you set its PWM to 0 or 100%, but you have more control and you can use it to control a solenoid, *OR* you can use it to control a solenoid in a window fashion, but with much more control.. You can then use it for water injection solenoid or variable nitrous controller duty cycles..

 

are you saying the extra solenoid can be made to regulate the WI to "match" boost?(as it now comes from XS) are the relay's settings programable or can they be made to follow the boost.

Am I to understand that simply dumping fuel and reducing ignition won't save the motor when the water quits? But you are talking above normal boost levels?

 

I don't know, but since the UTEC Is programmable, and the relay output is probably also programmable.. I could see it being possible..