E40 and WMI guidance

[Ibuckfitches]

My neighbour has a bimmer that he was running WMI on but he’s done with it now and is willing to give it to me for cheap cheap. It is a boost controlled kit with the solenoid valve and all.

I have a manual b8.5 s4 with just over 90000 kms running the stage 2 IE double pulley 93 manual file. 188/57.5 ratio, cap heat shielded test pipes, IE intake, cap heat exchanger, spec stage 1 clutch and flywheel unit, awe touring/resonated downpipes, PS4s 255 all around. I also have a 034 HPFP on the way and I am looking to run that E[emoji535].

My thinking is I am gonna play around with this WMI kit and install the res in the trunk but don’t know much about the tuning side of things and can’t find any information on whether IE would correct fuel trims etc and offer any form of support. I think 034 has a wmi file but unfortunately IE does not have any information listed.

Would I be fine just injecting the wmi at the tb if I bought a spacer, and running a ecs boost tap along with the E40. Or would I be better off not messing with it as I’m not sure I have the tuning support. I live in Canada so ambient is super cold right now around -20 celcius or -4F. Is it common to mix the E40 and WMI as that would be pretty crazy octane right? Hope someone experienced can help me out a bit and lead me the right direction.


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[RMode]

My neighbour has a bimmer that he was running WMI on but he’s done with it now and is willing to give it to me for cheap cheap. It is a boost controlled kit with the solenoid valve and all.

I have a manual b8.5 s4 with just over 90000 kms running the stage 2 IE double pulley 93 manual file. 188/57.5 ratio, cap heat shielded test pipes, IE intake, cap heat exchanger, spec stage 1 clutch and flywheel unit, awe touring/resonated downpipes, PS4s 255 all around. I also have a 034 HPFP on the way and I am looking to run that E[emoji535].

My thinking is I am gonna play around with this WMI kit and install the res in the trunk but don’t know much about the tuning side of things and can’t find any information on whether IE would correct fuel trims etc and offer any form of support. I think 034 has a wmi file but unfortunately IE does not have any information listed.

Would I be fine just injecting the wmi at the tb if I bought a spacer, and running a ecs boost tap along with the E40. Or would I be better off not messing with it as I’m not sure I have the tuning support. I live in Canada so ambient is super cold right now around -20 celcius or -4F. Is it common to mix the E40 and WMI as that would be pretty crazy octane right? Hope someone experienced can help me out a bit and lead me the right direction.


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WMI does not change octane

If there’s no tuning support, it’s completely useless. And that’s before even discussing the pitfalls of spraying something in front of the throttle body, knowing there’s no chance for it to be distributed evenly.

WMI can be a great way to manipulate AIT, but if you already run Ethanol, I can’t fathom why you would bother


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[Ibuckfitches]

WMI does not change octane

If there’s no tuning support, it’s completely useless. And that’s before even discussing the pitfalls of spraying something in front of the throttle body, knowing there’s no chance for it to be distributed evenly.

WMI can be a great way to manipulate AIT, but if you already run Ethanol, I can’t fathom why you would bother


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I was under the impression when you spray using a throttle body spacer that is after the throttle body and not before


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[RMode]

I was under the impression when you spray using a throttle body spacer that is after the throttle body and not before


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Either way, it can’t be distributed evenly - not even air is evenly moved but that’s accounted for with a proper tune. Ideally, you want it injected per cylinder


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[Ibuckfitches]

Either way, it can’t be distributed evenly - not even air is evenly moved but that’s accounted for with a proper tune. Ideally, you want it injected per cylinder


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From gathering some other information off of other wmi threads, it seems that some people inject it solely for the purpose of cooling the blower? Wouldn’t injecting directly into the chamber lack the benefit of the cooling


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[Fresh.S4]

WMI is wonderful if sprayed in the proper locations and CAN supplement your fuel octane.

the rule of thumb is the further from the tb you spray, the more time to evaporate = cooler temps
the closer to the ignition point = creates more of an octane spike.

I currently run it in the configuration you are wanting. hemi throttle body>meth plate>ultra charger pipe. and its controlled by an ecs boost tap and set to 2psi to turn on. I am using the windshield reservoir as my tank so that i get the low level fluid signal naturally on the dash.

[Ibuckfitches]

WMI is wonderful if sprayed in the proper locations and CAN supplement your fuel octane.

the rule of thumb is the further from the tb you spray, the more time to evaporate = cooler temps
the closer to the ignition point = creates more of an octane spike.

I currently run it in the configuration you are wanting. hemi throttle body>meth plate>ultra charger pipe. and its controlled by an ecs boost tap and set to 2psi to turn on. I am using the windshield reservoir as my tank so that i get the low level fluid signal naturally on the dash.

Thanks for your input, when you installed your system did you notice much for performance gains and did your supercharger get as cool as people are saying? Who are you tuned with?


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[Fresh.S4]

just noticed your username, thats fkin awesome and reminds me of my younger days.

i didnt notice much butt dyno performance. the main benefit is to just keep your pumps from maxing out. its def not gonna be overly noticeable in the cooling department because you are spraying pre compression and once the air hits the supercharger its going to all get heated anyways. when i spray, i sometimes notice a few degree temp drop before climbing back up. these kits dont work as well cooling like they would on say a turbo car because with those setups, the compression happens first and THEN the spray cools that down before entering the engine.

if you want cooling, its best just to run a divorced heat exchanger + mostly water if you can.

034

[BrokeBichB8]

A lot of guys also get benefit from spraying water/meth thats almost frozen so upon injection it freezes into ice basically and that adds a bit of cooling, but that can be detrimental to rotor pack coating