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Old May 31, 2005 | 10:08 AM
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Alcohol Injection Question

What supporting mods would you need before running an alcohol injection kit? Im getting a TBE, cams, walbro fuel pump, ngk spark plugs, and arp headstuds. Will those and the mods in my sig be enough for an alky kit? If not, what else would i need?
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Old May 31, 2005 | 10:10 AM
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fuel pump, esp. with cams.. and a fuel reg. for some extra insurance.. and an upgrade in inj. 650cc will be good..
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Old May 31, 2005 | 10:16 AM
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from what ive seen and experienced *not with EVOs yet* is that the AEM EMS controls the alky kits better then trying to tune them with AFC. i havent seen anyone in my area yet with the alky kit and AFC, but im sure its a pain in the ****, just like with DSMs. my opinion, if you want to run alky and get all the performance from it, save up and get the AEM EMS to control it. you will be much happier with the results. my .02
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Old May 31, 2005 | 10:20 AM
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I was debating getting the EMS or sticking with the afc/avcr. How many different fuel and boost maps can you hold on an EMS, because i would like to switch between pump with no alky, pump with alky, race gas with no alky, and race gas with alky.
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Old May 31, 2005 | 10:22 AM
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You don't need an AEM EMS to run alky right. I have a utec and it works fine. The hardest thing about alcohol injection is finding someone who understands how it works and knows how to tune for it. I don't see why you need injectors if you're going to use it. Depending if you're going to use straight methonol or not, it's like an extra injector. With my tune, my injector duty cycle is only at 80% and the rest is compensated with my alcohol. Car runs great. Just my 2cents.
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Old May 31, 2005 | 09:56 PM
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a little bigger inj. will help so he does have to run a high duty cycle with the stockers.. and its also good ins.. if your going to do things do them right, less aggravation down the road.. but thats just me..
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Old May 31, 2005 | 10:04 PM
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what needs to b tuned for the alky ?
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Old May 31, 2005 | 10:17 PM
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By no means do you need upgrade injectors for stock turbo applications when running methanol injection. The methanol acts as another fuel source as well as effectively increases the octane of the fuel you're using.

An AEM EMS is not required for methanol injection, but is very nice to have if you can afford it. Most engine management/fuel management systems can be tuned with the methanol to make use of it... it just all depends on the magic of your tuner.

Rather than buying mods to "support" methanol injection... it should be looked at from a different view-point: What mods can you do with the support of methanol injection?

The only things I would do to support the methanol injection beforehand is an upgraded fuel pump, headstuds (for high boost applications, although argueable), and some sort of engine management system. The methanol will further support whatever future mods you wish to do... such as raising the boost, advancing the timing, etc.
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Old Jun 2, 2005 | 12:28 AM
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Just FYI I tuned a evo with all the bolt on mods plus a 35r with SAFC+alky. It runs great. His car has 780 injectors but I think you would actually be better off with smaller injectors because you have to take so much fuel out on the SAFC due to the alky. I believe on the high end it is around -40 or so.

IMO you don't need anything to support alky. Alky is the support for the other mods. If it were my car I wouldn't worry about the headstuds right now. Seems alot of people are having problems the oil seepage after installing them.
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Old Jun 2, 2005 | 06:51 AM
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So, if i was to get an alky kit right now, would it be beneficial? Would i be able to turn up the boost higher with the mods i have or would i need a few more things before then? Also, how much does installation cost for an alky kit?
Thanks for the input!
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Old Jun 2, 2005 | 06:59 AM
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Originally Posted by cruizinmax
Just FYI I tuned a evo with all the bolt on mods plus a 35r with SAFC+alky. It runs great. His car has 780 injectors but I think you would actually be better off with smaller injectors because you have to take so much fuel out on the SAFC due to the alky. I believe on the high end it is around -40 or so.
How much of that adjustment is alky related? I've wondered how much fuel would have to be pulled with an SAFC for alky if the base ECU flash is good for pump gas.
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Old Jun 2, 2005 | 07:28 AM
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Originally Posted by nnorris7413
So, if i was to get an alky kit right now, would it be beneficial? Would i be able to turn up the boost higher with the mods i have or would i need a few more things before then? Also, how much does installation cost for an alky kit?
Thanks for the input!
IMO, an alcohol injection system is best applied at a point where the limiting factor is the fuel itself, and not the potential of the hardware (excluding turbo).For all practical purposes, the only real performance mod you have at this point is the Apexi stuff, which means that you are effectively limited by mechanical flow potential.

You'll make more power (and full-time power at that) with a few basic hardware upgrades, pump fuel, and appropriate tuning than you will by wrenching an alcohol injection kit onto a basically stock setup. While it's just my opinion, it seems that considering an alcohol injection kit at this point is somewhat 'bass ackward'.
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Old Jun 3, 2005 | 09:10 AM
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Originally Posted by EVO8LTW
How much of that adjustment is alky related? I've wondered how much fuel would have to be pulled with an SAFC for alky if the base ECU flash is good for pump gas.
The car was at about -30 or so before the alky. Keep in mind these numbers won't apply to a lot of people. The car has significant modifications. On a car with stock injectors you will not have to pull anywhere near this amount of fuel.

I would say that if you have a forced induction car that an alky kit will definently be benificial regardless of the mods. The only benifit of alky isn't just the fuel aspect, you have less of a chance of knock, bad/low octane fuel won't matter as much, lower intake charge temp. Also you don't have to inject loads of alky. If your car is moderatly stock you can take advantage of the cooling aspects of the alchohol.
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Old Jun 3, 2005 | 09:29 AM
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Yo Nick, I'm in the same exact situation u r! I'm debating whether to try to max out the stock turbo or go with an AMS turbo upgrade. I wanna use the alky kit in order to safely boost my car. I actually use a UTEC rather and a stand-alone EMS. An AEM EMS is not completely necessary because not only do u lose ur OBD II capability, u have to get it tuned perfectly and that takes a lot of time and money. I can get u an amazing deal on a UTEC if u want. Gimme a call when ur out of school and I'll talke to u more about modding the **** out of ur car!
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Old Jun 3, 2005 | 12:07 PM
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ill be sure to do that.....the only problem is i need some money first. Gotta wait a couple of months then ill be getting cams most likely.
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