Miata Turbo Forum - Boost cars, acquire cats.
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Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   Methanol/Water Injection (https://www.miataturbo.net/methanol-water-injection-22/)
-   -   Let's talk about pre-turbo WI. (https://www.miataturbo.net/methanol-water-injection-22/lets-talk-about-pre-turbo-wi-35955/)

JasonC SBB 06-27-2009 06:05 PM
Ah I forgot you want to inject both pre compressor AND post ic.
The only downsides then are the possible erosion, and puddling in the bottom of the IC (other than complexity).

Dust 06-27-2009 08:43 PM
Originally Posted by magnamx-5 (Post 424401)
that makes more sense i wonder where you got the idea to run two nozzles on staged injection :magna: Im curius as to the amount of pooling etc you get. Theoretically if you kept the spray off until you hit a higher velocity say 13 or so psi it should all keep on moving until your done with it in the combustion chamber.

Some have set up their pre turbo solenoid to start only when the turbo gets to the right side of it's compressor map, so that the map is moved at the right time.

gospeed81 06-27-2009 08:47 PM
Originally Posted by Dust (Post 424442)
Some have set up their pre turbo solenoid to start only when the turbo gets to the right side of it's compressor map, so that the map is moved at the right time.
That's really interesting, and I'd never thought of this.

I don't wanna splurge on a real progressive kit, and already have a "Y" fitting.

I'm thinking about using 2 pressure switches and 2 solenoids. Main nozzle after IC comes on at 8psi, and a smaller nozzle pre-compressor comes on at 10psi to shift the map a little.

With my hustler-penis-sized turbo I would definitely not mind having 12psi at something better than 60% efficiency for once.

ZX-Tex 06-27-2009 09:55 PM
Originally Posted by Dust (Post 424442)
Some have set up their pre turbo solenoid to start only when the turbo gets to the right side of it's compressor map, so that the map is moved at the right time.
That is a really cool idea (pun intended).

magnamx-5 06-28-2009 01:46 AM
Originally Posted by Dust (Post 424442)
Some have set up their pre turbo solenoid to start only when the turbo gets to the right side of it's compressor map, so that the map is moved at the right time.
yeah thats the only way the shit would work man. I runs a 2 stage myself have done so for a few years now.

Dust 06-28-2009 06:50 AM
Originally Posted by gospeed81 (Post 424443)
That's really interesting, and I'd never thought of this.

I don't wanna splurge on a real progressive kit, and already have a "Y" fitting.

I'm thinking about using 2 pressure switches and 2 solenoids. Main nozzle after IC comes on at 8psi, and a smaller nozzle pre-compressor comes on at 10psi to shift the map a little.

With my hustler-penis-sized turbo I would definitely not mind having 12psi at something better than 60% efficiency for once.
You can find DO stuff really cheap if you know where to look (ClubGP)


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