Meth/H20 Injection

[Nepharius]

Ok well I grabbed that Devil's Own Meth/H20 kit off of JMac and I am going to go about installing it over the next week or two. I'm pretty sure I've got the whole cold pipe bit worked out now, the pretapped one being from a 3 and I own a 6. My main issues are working out the wiring and placement.

Anyone know where the best place to tap into boost would be? The BPV? I think I read somewhere I can put a T bit in there and and some extra tubing and it should be sweet.

The other thing is can anyone think of a good place to mount the pump? It should be lower then the tank (which I will put where the old intake stuff was) but orientation doesnt matter. I would then need to figure out how to bolt it down. I don't really want to do any drilling into the car either.

Once I have this in I'll keep you guys updated on how it goes.

[MattMPS3]

Yes, you can tap into your bov line with a t-piece for the boost switch, it isn't important to have the tank above the pump with this kit, once the line is primed and providing you don't run out of fluid you wont have any issues with air in the line, the nozzle has a check valve incorporated into it, when your pump is inactive the system is closed, thereby retaining line pressure.

Check out the US forums for some mounting location ideas, there are some great discreet boot mount set ups that have been done with the 6's over there, just need to get a longer hose to the engine bay.

[Nepharius]

Ok so it has been a while but I'm trying to get this all squared away over this weekend.
I found online a guide for how to remove the front bumper and I got that off yesterday. I inspected the area and took a few measurements etc. to try and figure out how I would mount everything coming up with an idea on using aluminium etc. to do it. I planned to mimic this way of mounting as close as possible.
http://www.mazdaspeedforums.org/foru...ailsafe-55184/ (seems mazdaspeed forums is down atm or at least I can't connect)

So today I was planning to go get some stuff so I could bend my aluminium to perfect 90 degree angles etc. etc. when I had a closer look at this funny fellow


Some stupid plastic junk mazda put in to make the car quieter I guess. Originally slated for throwing away. However on closer inspection....

That's a convenient space there... almost a pump size space.... :O

It is a pump size space!



It'll even bolt straight back up in the stock position! No drilling, no screwing around with anything but my horrible brackets as you can see! It also won't push back on that soft plastic bit which could result in bumping into the wheel. Now it wasn't perfect, it had a small hole in the bottom, but I just drilled that bigger and plan to use it to mount the intake for the pump. It also pokes up into the engine bay so throw a cap on top and away you go!.

So coming up next the thing is incredibly dirty and will need a very thorough cleaning and inspection before it goes into use. I also need to mount securely the intake nozzle or whatever it is called for the system as the hole I drilled is a tiny bit too big. I reckon epoxy and silicon sealant should do the trick here. I have actually considered buying a new very clean one from Mazda but I'd probably have to pay through the nose for that :S
Once that is all done, I will mount it up, wire the pump in put in the controller stuff and tap into boost, swap over cold pipes for the tapped one and we are done!

[Sunder]

In terms of performance, how did it all go? After a decade of car modding, I almost have enough bits to rig up a kit, and I've been thinking of doing this - to reduce carbon build up if nothing else. Did it make any difference to either power or efficiency?

[Nepharius]

You'll have to wait till I finish, should be done this weekend or so. Just waiting on my OBD2 interface so I can accurate boost readings to make sure it will activate at the right time and then away she goes.

[Toddy22587]

Any progress on this? I've been thinking about getting a kit lately but would like to know your thoughts

[MattMPS3]

I installed my kit the other weekend, (Devils Own stage 2 kit), all I can say is that I wish I had done it sooner, last week with the heatwave in Sydney, whenever I got on boost, the car felt like it was driving around on a cool winters day, watching the IAT & BAT temps on the dash hawk were fun, even in the lower pump output range the BATs would drop at an unbelievably fast rate, I have the 4gph nozzle, pump starts (15%) at 4psi and maximum output at 14 psi.

[Toddy22587]

Thanks for the info Matt, got a few question for your if you've got time
- Where is the best place to buy meth and roughly how much does it cost?
- Is it street legal to use?

If i'm not mistaken the stage 2 kit comes with the controller to allow you to adjust how much meth is injected in relation to boost. Its my understanding that the system achieves this by adjusting the output pressure of the pump however i have read that due to the possibly low starting pressure when the system firsts begins to spray the meth may not atomise very well as the nozzles are designed to run at a higher pressure. Did you do any testing to check the atomisation of the meth while the pump is running lower pressure?

Good to hear that your pleased with the results

[MattMPS3]

OK, to answer the first 2 questions
-Metho, it is just as good (if not better) than ethanol, Bunnings 5lt for ~$12, runinng a w60/m40 mix.
-As far as I'm aware it is illegal for road use (hence my stealth like install)

Stage 2 kit comes with the progressive controller, it works on a modulated output, rather than a percentage of output, so the pump at its lowest setting is at 15% PWM, so its 100% power over 15% of time, if you have ever seen one of these pumps in action its more of a pulsating spray, rather than a constant spray, even at 4psi, there is quite a bit of air going through the system, and whatever hasnt evaporated in the intake mani, will only serve to steam clean your pistons. In the instructions it says that too much spray at any given time will usually cause bucking from the engine, mine is set at the recommended setting of on at 1/4 boost, full at 3/4 boost.

[Toddy22587]

Methylated spirits (metho) is 95% Ethanol.

Is there any difference between running Methanol or Ethanol?

I can buy pure methanol for $50 / 20L locally but it would be more convenient to just use metho