WMI or 5th port?

[Voltwings]

It takes the spray a second to get going, and i'd rather use it to prevent things from getting hot instead of trying to cool them down when they already are.

I'd start the spray low, around 12-15 psi. That way, its already spraying as you're building boost (heat), and as you come into full boost it will be a more gradual progression. Spool happens fast, a lot faster than meth can get from the trunk of the car to the front in most cases (still takes a second, even with a CV), so you'd basically be behind as far as meth cooling is concerened. You almost want to jump the gun with it.

[rfinkle2]

Originally Posted by mituc Looks like DO has such a kit of stainless lines, the guys from Edge just sent me a link I never came across myself: Stainless Steel Line set The thing is that the DO stage2 kits work only with boost input, and the idea of not having to tap any wire or run so many wires is also something I like. I guess with this turbo I should be fine as the maximum boost with my tune is reached at the rev limit, so there's a progression in the boost ramping across the entire rev range. On this setup I have I have to be very insistent to reach more than like 15psi below 3000rpm (only flooring the car in 5th/6th uphill around 2500rpm may result into that). Basically it's like that: - 19psi at 3500rpm; - 20psi at 4200rpm; - 21psi at 4700rpm; - 22psi at 5000rpm; - 23psi at 5500rpm; - 24psi at 6000rpm; - 25psi at 6500rpm; - 26psi at 6750-6800rpm. - 26.2-26.5psi at 7000rpm just before the fuel cut. So I guess if I will use exactly as much boost as I use now I can start spraying at 16-18psi and set it to full duty cycle at 22 or something, as I like how the car drives now below 5000rpm and I don't really want more power below (I will not be able to use it because the lack of traction and I don't want to get any hate from the rods).

They have a DVC-30 which can be wired to a 0-5v signal.

When you get a chance @mituc; check this thread out.
Methanol Injection info

[Dano]

Originally Posted by Voltwings It takes the spray a second to get going, and i'd rather use it to prevent things from getting hot instead of trying to cool them down when they already are. I'd start the spray low, around 12-15 psi. That way, its already spraying as you're building boost (heat), and as you come into full boost it will be a more gradual progression. Spool happens fast, a lot faster than meth can get from the trunk of the car to the front in most cases (still takes a second, even with a CV), so you'd basically be behind as far as meth cooling is concerened. You almost want to jump the gun with it.

I actually start mine at 8-10PSI, in an attempt to make the transition smoother/longer [from start of spray to full pump power] Not sure from recent testing this is working as desired but its my current working theory. Just trying to smooth out the abrupt AFR drop when the system activates without having to cut the MAF scaling too much. Maybe it would be smoother at higher boost since more airflow is being generated, IDK.

if I had WMI to do over I would def get an IDC or MAF triggered unit, not the boost triggered one I have. MAF or IDC just seems like a more stable source to trigger when the system activates and to ramp up the duty cycle/voltage of the pump.

5th port would def trump WMI in this regard due to the more accurate spray of an injector plus a real controller via a 3D map with RPM vs MAF signaling.

[mituc]

Originally Posted by rfinkle2 They have a DVC-30 which can be wired to a 0-5v signal.

Yes they do, it's called Voltage Stage 2. I'll get the voltage based instead.
I'll have to go with the DO kit since they seem to have in one place pretty much all I need: stainless lines, bungs, solenoids, and so on. Because I'm on another planet acquiring each of these individually from different stores in the US would result in shipping fees comparable or higher than the kit itself.

Originally Posted by rfinkle2 When you get a chance @mituc; check this thread out. Methanol Injection info

Man... That post was put together while this thread was alive.I feel like you wrote all that especially for me Awesome information btw! Reading it I remembered to add a check solenoid and a silicone bung to the shopping cart.

[Lex]

Originally Posted by Dano I actually start mine at 8-10PSI, in an attempt to make the transition smoother/longer [from start of spray to full pump power] Not sure from recent testing this is working as desired but its my current working theory. Just trying to smooth out the abrupt AFR drop when the system activates without having to cut the MAF scaling too much. Maybe it would be smoother at higher boost since more airflow is being generated, IDK. if I had WMI to do over I would def get an IDC or MAF triggered unit, not the boost triggered one I have. MAF or IDC just seems like a more stable source to trigger when the system activates and to ramp up the duty cycle/voltage of the pump. 5th port would def trump WMI in this regard due to the more accurate spray of an injector plus a real controller via a 3D map with RPM vs MAF signaling.

If you play around with WMI and watch the spray pattern as the pump starts to receive voltage you quickly see how hard it is to actually meter and control the spray in a meaningful way.

I would say that for up to a D10 nozzle a stg1 kit with a hobbs switch will work out just fine.