So, installing supercharger + 7th injector kit and I am trying to plan my wmi setup.
I know I haven't tuned (or installled) my supercharger yet but pretty sure methanol + h20 will be needed. Not trying to squeeze every bit of power out of my 98 4runner but I live in California (bad gas), I do lots of long mountain trips and I regularly tow 3-4 thousand pounds and I think injection will help keep things safe and running smoothly
Questions are:
*How do I want to control the wmi? Maf? Map? Rpm? Injector duty?
*I don't want to use my washer bottle and would like a little more capacity for really long trips. Any tips on where I could install a 2-5 gallon tank? Is it safe to mount a tank inside the truck if I am not going above 50/50?
*What kits do you guys recommend?

Regards,
Matthew

 

I use a boost solenoid that was included with the Kit from Devils Owns and set it to turn on at 10psi-30psi, I added an LED indicator beside my boost gauge to help dial it in, for your low boost application it may be tricky to dial in. You have lots of room under the hood for water and pump so I would shop the wreckers for a good fitting very Large jug over 6L would be ideal, yes you can install it in the truck but your hose routing will be longer, some even install a low level indicator in the tank if it is small. From what I have read people are going to alcohol water injection route with appropriate nozzles(s) and dropping the complex 7th Injector. You must have a WBO2 inorder to tune it. Never heard of bad gas in Cali before, you will need to run premium gas after installing the Supercharger, 94 octane would be ideal.

 

In California she best we get is 91...

 

Don't make it too complicated. If you're using the 7th injector kit then just a simple hobbs boost switch that will come with basic kits. You can use the stock reservoir and -20 blue wiper fluid. I mounted a Devile's Own 2 gallon tank in the place where the stock airbox was with my turbo setup.

You can definitely mount a tank in your truck. The motor will be loud, so it needs to be external, but the tank needs to be higher than the pump to prime it. It will self prime but it drastically delays the meth delivery. Other than that, I always had leaks of some sort, so inside installation might not be the best idea.

 

What kind of controller will you be using for controlling the 7th injector? You may consider getting a controller that can control timing, fuel, and WMI in one unit. I have a MAP-ECU3 for example (running larger injectors rather than a 7th injector), it can control additional injectors including a WMI system. Tuning will be somewhat easier if it's all controlled through a single unit.

Also, you may consider just installing the supercharger with 7th first before dedicating to the WMI route, otherwise you will have a pretty complicated tuning task ahead of you with no experience or knowledge if it will even be needed.