- Joined
- Sep 26, 2019
- Threads
- 26
- Messages
- 3,057
- Reaction score
- 1,222
- Location
- California
- First Name
- Jaxson
- Vehicle(s)
- 2015 mustang gt
- Banned
- #16
If you run w/m injection and e85 then the w/m is just for cooling iat’s. If you use it with pump 91 then just tune for 91 and let the w/m increase octane but don’t tune for it unless you run a backup (redundant) pump. W/m can work just like e85 plus cooler iat’s and you can get fuel anywhere. E85 with w/m is going to be the best but most expensive because e85 goes fast and the cost of w/m on top is going to increase the price of each gallon burned. W/m is going to keep your engine super clean as a side effect. When it comes time to smog test it you will E.O.number for the supercharger so I hope it was a complete carb legal kit. If you have that then all you need is a tune with all the monitors working which is probably going to be the one that came with the supercharger kit. As for the w/m during a smog it is not illegal to have w/m equipped in your car just like nitrous but it is illegal to activate it on the street so just turn it off during the smog test. Do not run straight water during the smog test. The smog test is not done under boost so you will not need it. Also your car did not leave the factory as flex fuel so you will have to have straight gas in the tank during the smog test or you will fail. I run e85 and have w/m equipped for whenever I need it. When I installed the w/m there was no e85 available. Because I recommend w/m for the cleaning if it did nothing else but it does so just make sure you know what you are getting into and it is a good upgrade
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