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Discussion Starter #1
Evening guys.

Recently fitted the above to my mini with great results, but the usage seems to be excessive. A friend runs the same AEM kit on his big turbo Fiesta ST and hardly uses any (half a gallon on a 2hr track night). I've just completed a four hour track day and used almost three gallons!

I understand the SC nature will bring the spray on earlier than a big turbo car which doesn't come on boost fully until 3800rpm, but I do seem to be burning my way through a hell of a lot of wat/meth mix!

It's a great set up and wouldn't be without it, but just keen to know if anyone else has a similar set up and if so, what their usage levels are.

For reference the mini is 220 at the wheels.

Cheers,
Stevie
 

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Premium Member
2006 R53
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10,418 Posts
I've been running an AEM meth kit for over a year and it's quite frugal on the juice. The smallest jet you get with the kit is more than adequate for what you're after
 

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Was it the same track?
Otherwise your comparing apples with onions

How much petrol did you use in 4 hours of track time - compared to the 2 hour fiesta ?
It might make for a far better comparison

I ask also because
It Seems reading average mpg posted here that many would struggle to drive 4 hours on the road without a refill, so I'm assuming you used more than 1 full tank of petrol ?



A Quick calc to me suggests you could have used 3x his amount even on the same track:confused1:

Double the session time wise, + fuel effiency, then a extra factor for weight disadvantage, = 3 as a rough guess
 

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Discussion Starter #4
I've been running an AEM meth kit for over a year and it's quite frugal on the juice. The smallest jet you get with the kit is more than adequate for what you're after

Thanks Astroboy,

AEM kit I have too.

It's the smallest jet I'm using and struggling to make the one gallon bottle to last even a tank of fuel on the road. Would you say this is normal?

Cheers,
Stevie
 

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2006 R53
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It's all depends how you are triggering the system and how you're driving. If you've set your start point incorrectly then the system will start emptying the tank when it's not required
 

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Discussion Starter #7
It's all depends how you are triggering the system and how you're driving. If you've set your start point incorrectly then the system will start emptying the tank when it's not required
That's the thing, I'm not entirely sure what the start psi should be. The car runs 14psi, so have set the start psi at 10 and max at 14. It's the AEM force induction kit.

I thought it was using a lot as the charger runs almost constantly? When my friends big turbo fiesta only runs boost after 3500rpm.

Stevie
 

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2006 R53
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Ok, sounds like it's setup spot on to me. The reason I was asking about the scale is that mine is 0-10 and I have to factor in atmospheric pressure as well as boost. Assuming your map sensor is ok at full boost the nozzle will be flowing 250cc/min the tank is quoted as being a gallon, which for a US gallon is about 3.7 liters, which if my maths is right will give you a theoretical 14.8mins for a tankful. If you're like me your tank will probably never be topped off. The controller will try to provide a ramp up of flow but in reality the way the R53 produces boost means if you hoof it then flow will be on or off
 

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Ok, sounds like it's setup spot on to me. The reason I was asking about the scale is that mine is 0-10 and I have to factor in atmospheric pressure as well as boost. Assuming your map sensor is ok at full boost the nozzle will be flowing 250cc/min the tank is quoted as being a gallon, which for a US gallon is about 3.7 liters, which if my maths is right will give you a theoretical 14.8mins for a tankful. If you're like me your tank will probably never be topped off. The controller will try to provide a ramp up of flow but in reality the way the R53 produces boost means if you hoof it then flow will be on or off
Sidebar....
Been looking into getting the AEM kit like this or the big daddy Aquamist hfs 3, the difference is like $500 and it will take me a while longer to save for it. Any of you guys use both or can speak to benefits of each, hp gain, install, ease of use? Appreciate it guys, just trying to figgure if FOR ME is it worth the 500 extra dollars? Thanks
 

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2006 R53
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I'll probably get shot down for saying this, but.....I don't really see any point in investing the additional funds in the hfs3 UNLESS you are going to have it setup by a pro with mapping to take full advantage of the additional control the pwm valves give. If you're looking to control intake temperatures then the AEM or Devil's Own systems will do the job. As long as its reliable and you don't over-jet the simpler the better. I did read an interesting article written by someone from Aquamist which kinda backs this up. I can't find the original thread but here's the text copied onto another forum
Aquamist's in-depth study of various water injection systems... - Subaru Impreza WRX STI Forums: IWSTI.com
sorry didn't fully answer your questions, on a mildly tuned car (which most R53's are) you should be looking to keep the power you've got rather than loosing it through high IAT's, mapping for meth can be complex and needs a strategy to cope with potential system failures. Install wise the AEM is a piece of piss, the instructions are comprehensive and where you mount it is up to you. Ease of use....mine has been fit and forget, I arm the system when its playtime a then switch it off afterwards...simples
 

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I'll probably get shot down for saying this, but.....I don't really see any point in investing the additional funds in the hfs3 UNLESS you are going to have it setup by a pro with mapping to take full advantage of the additional control the pwm valves give. If you're looking to control intake temperatures then the AEM or Devil's Own systems will do the job. As long as its reliable and you don't over-jet the simpler the better. I did read an interesting article written by someone from Aquamist which kinda backs this up. I can't find the original thread but here's the text copied onto another forum
Aquamist's in-depth study of various water injection systems... - Subaru Impreza WRX STI Forums: IWSTI.com
sorry didn't fully answer your questions, on a mildly tuned car (which most R53's are) you should be looking to keep the power you've got rather than loosing it through high IAT's, mapping for meth can be complex and needs a strategy to cope with potential system failures. Install wise the AEM is a piece of piss, the instructions are comprehensive and where you mount it is up to you. Ease of use....mine has been fit and forget, I arm the system when its playtime a then switch it off afterwards...simples
Just been looking through old threads in relation to the meth injection. Just got myself an AEM meth kit, where have you found the effective place to mount the nozzle I’ve seen the passenger horn but wasn’t sure how high/low. Also pump and tank location? It does say the nozzle has to be higher than the tank to prevent any siphoning effect also. Cheers


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