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Forced Induction Turbo, Supercharger, Methanol, Nitrous


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Old 05-20-2017, 07:40 PM   #15
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I have no access to e85. Just interested to know if WMI can give similar power gains to e85.


Bummer. I'm that case, yes it can!


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Old 05-20-2017, 08:05 PM   #16
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I have no access to e85. Just interested to know if WMI can give similar power gains to e85.
in boosted applications it can
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Old 05-20-2017, 08:41 PM   #17
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in boosted applications it can


High compression NA as well. @Shiv@Openflash developed a meth kit for the E90/E92 M3 that made impressive gains on that platform. (NA V8, 12ish to one compression ratio)


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Old 05-20-2017, 10:41 PM   #18
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WM injection is also a lot cheaper than FF up front. Probably about 50% cheaper as you need FF kit + injectors + fuel pump to run e85.
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Old 05-22-2017, 03:59 PM   #19
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WM injection is also a lot cheaper than FF up front. Probably about 50% cheaper as you need FF kit + injectors + fuel pump to run e85.
I'm not sure why more of us without access to e85 don't use it then. Sounds like win win. The money I'd have to spend and risk I'd have to take (with the rods) to get an extra 20-30% in a different way would be quite significant. Like doing the full exhaust (£1.5k) or dropping a pulley size and retune.

Admittedly, I'd probably have to drill into the aluminium intake manifold for the WMI site.....
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Old 05-28-2017, 10:26 PM   #20
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I'm not sure why more of us without access to e85 don't use it then. Sounds like win win. The money I'd have to spend and risk I'd have to take (with the rods) to get an extra 20-30% in a different way would be quite significant. Like doing the full exhaust (£1.5k) or dropping a pulley size and retune.

Admittedly, I'd probably have to drill into the aluminium intake manifold for the WMI site.....
The common argument it is one more potential failure point. You rely on the system to save your motor from fatal knock basically. Although in reality they have fail safes so not sure how true that argument is.

Good point on the spray nozzle not sure how that mounts...
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Old 05-28-2017, 10:40 PM   #21
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Originally Posted by Bfranklyn86 View Post
I'm not sure why more of us without access to e85 don't use it then. Sounds like win win. The money I'd have to spend and risk I'd have to take (with the rods) to get an extra 20-30% in a different way would be quite significant. Like doing the full exhaust (£1.5k) or dropping a pulley size and retune.

Admittedly, I'd probably have to drill into the aluminium intake manifold for the WMI site.....
Couldn't just get a TB spacer with a pre drilled port?

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Old 05-29-2017, 04:08 AM   #22
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Couldn't just get a TB spacer with a pre drilled port?

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Despite what WMI kit manufacturers say, I think most people advise to avoid spraying it through the supercharger. I would need it post charger, which involves drilling and voiding the supercharger warranty.

http://blog.perrinperformance.com/tw...rrin-2016-wrx/
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Old 05-29-2017, 08:01 AM   #23
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Despite what WMI kit manufacturers say, I think most people advise to avoid spraying it through the supercharger. I would need it post charger, which involves drilling and voiding the supercharger warranty.

http://blog.perrinperformance.com/tw...rrin-2016-wrx/
Damn that's a pretty big risk..

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Old 05-29-2017, 11:24 AM   #24
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Could you use a nitrous plate at the throttle body and instead of nitrous and fuel, use water/meth and compressed air? Seems like that would atomize the water really well.
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Old 06-03-2017, 06:21 AM   #25
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Could you use a nitrous plate at the throttle body and instead of nitrous and fuel, use water/meth and compressed air? Seems like that would atomize the water really well.
It's still pre-supercharger which is a no no.
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Old 06-24-2017, 01:33 PM   #26
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Originally Posted by stevo585 View Post
WM injection is also a lot cheaper than FF up front. Probably about 50% cheaper as you need FF kit + injectors + fuel pump to run e85.
This is not true unless boosted. Stock pumps and injectors have plenty of overhead for light boost OR flex fuel but not both.

Edit: this is the FI forum so I guess you could assume that the case in question is already boosted
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Old 12-16-2017, 08:53 PM   #27
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Anyone actually have a setup of WMI? My tuner is kinda against it although it is very popular in the performance world. The one big con is it can fail although seeming rare. The pro is much cheaper cost. Seems like initial upfront cost is a lot more for Flex Fuel about $1500.
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Old 12-17-2017, 03:08 AM   #28
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I have both systems, but on a different platform: sc'd s2k. We tested W/M vs E85 back to back on the dyno and just FYI, E85 made about 50whp more.

We tested port vs single nozzle w/m as well. Everyone says port is better, but the nozzles were flowing way more than they should of according to the flowmeter on the AEM failsafe which forced us to use single nozzle. I had the smallest nozzles I could find: Bank 47 ml/min. I was flowing over 200 cc/min per nozzles. And yes I had the gauge configured correctly in the aem software (unless there is some aem glitch/error).

We were using the aem infinity and could see individual cylinder knock. The single nozzle performed better than the port setup. I had the port nozzles in front of a manifold and solenoid. We also setup the failsafe and w/m kit to trip for flow out of range and low fluid conditions. To get a bullet proof setup you're going to spend close to 1k and this is still using aftermarket parts (your w/m kit and aem failsafe). Will it be OEM reliable? Hard to say. In hindsight, I would just build the motor around maximizing the fuel you have with the least amount of aftermarket gadgetry.

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