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Race Gas or Meth????

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Old Aug 5, 2008 | 07:47 AM
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Default Race Gas or Meth????

I have some questions regarding the 2 methods:

I am trying to decide between doing a race gas map or doing a methanol injection setup. I have a meth injection setup from my old car sitting in my garage but i am not sure i want to add any more complexity to my setup. I am thinking it might be a better idea to just make a race gas map due to the fact that i will not run it very often and there is less of a chance for mechanical failure.


My questions are how big of a pain in the a$$ is it to drain the fuel tank in order to fill w/ race gas? Is there any type of drain plug in the tank or can you just syphon the gas out? How fail proof is using a meth setup with the F-con?
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Old Aug 5, 2008 | 07:58 AM
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I got meth and F-con for over 17,000 miles...no problems
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Old Aug 5, 2008 | 08:01 AM
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Are you sure you want to run race gas all the time? 1st is the cost will kill you and second your 02 sensor will crap on you because of the lead. Meth kit is more cost effective and will not damage your 02 sensor. $3-$5 gallon meth will last you at least 4-5 fillup. FCon is perfect with meth since it can automatically switch to different map if you ran out of meth.

Edit: also Race Gas will not help you cool down your IAT which is very important in hot summer days. Also Meth/Alcohol is party oxygenated so that help with the burning and it creates a clean burn.

Last edited by athenG; Aug 5, 2008 at 08:06 AM.
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Old Aug 5, 2008 | 08:02 AM
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IMO

For track-special occasions and more power Id do race gas.

For a good power jump above solely pump gas, and for people who want to be able to "throw down" at any moment without worrying about mixing, etc, Id do meth.

With that being said I did meth, and have no regrets. My car makes power almost as high as the most powerful Greddy set-ups on race gas, the difference I can make up for driving
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Old Aug 5, 2008 | 08:02 AM
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--->meth<---

all the way Chris
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Old Aug 5, 2008 | 08:07 AM
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93+50/50 meth mix = C16

Don't know how you guys have yours setup.
My setup only sprays after 3psi to cool off the motor
and up the octane.
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Old Aug 5, 2008 | 08:07 AM
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the issue with meth is the liability if it isnt working correctly. from a shops point of view, i dont want to see anyone driving on the "meth" map when the meth isnt working correctly.


i love race gas, its in there EVERY time you put it in the tank...
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Old Aug 5, 2008 | 08:08 AM
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Originally Posted by athenG
Are you sure you want to run race gas all the time? 1st is the cost will kill you and second your 02 sensor will crap on you because of the lead. Meth kit is more cost effective and will not damage your 02 sensor. $3-$5 gallon meth will last your at least 4-5 fillup. FCon is perfect with meth since it can automatically switch to different map if you ran out of meth.

Edit: also Race Gas will not help you cool down your IAT which is very important in hot summer days. Also Meth/Alcohol is party oxygenated so that add help with burning and it creates a clean burn.

good point on the sensor, my sensor went cazy on me when I ran race fuel, that's was an exspensive fix.
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Old Aug 5, 2008 | 08:08 AM
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I would do the Meth....It works well for me, and as AthenG mentioned...the lead will kill your O2 sensor.....
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Old Aug 5, 2008 | 08:16 AM
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thanks for the replies guys.


I was intending on using the race gas only every once in awhile. Not driving around on it all the time, thats why i asked how big of a pain in the *** it is to drain the tank?
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Old Aug 5, 2008 | 08:19 AM
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Originally Posted by Audible Mayhem
the issue with meth is the liability if it isnt working correctly. from a shops point of view, i dont want to see anyone driving on the "meth" map when the meth isnt working correctly.


i love race gas, its in there EVERY time you put it in the tank...
That's why you have a activation light.
Also a kill switch for the meth circuit so you can run maps that are meant for non meth.
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Old Aug 5, 2008 | 08:21 AM
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Originally Posted by chris'smax
thanks for the replies guys.


I was intending on using the race gas only every once in awhile. Not driving around on it all the time, thats why i asked how big of a pain in the *** it is to drain the tank?
When I plan to take my car to the road race track.....I just drive off the regular gas in the car ( needle below E ) and then just fill up with race gas. I dont have to drain the tank.
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Old Aug 5, 2008 | 08:21 AM
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what if some do no tuning on the meth, have the pump spray minimum just to help elevate heatsoak. I was think of doing tht
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Old Aug 5, 2008 | 08:22 AM
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Originally Posted by Glex25
That's why you have a activation light.
Also a kill switch for the meth circuit so you can run maps that are meant for non meth.


I think he is reffering to the probability of pump failure, clogged nozzels, etc.


By the time that activation light is lit you are F^^^ed anyways
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Old Aug 5, 2008 | 08:22 AM
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I run about 1/3 race gas at all times for last 3 years. Its unleaded 101. Is this bad for your o2's
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Old Aug 5, 2008 | 08:26 AM
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Originally Posted by wannabuy350z
what if some do no tuning on the meth, have the pump spray minimum just to help elevate heatsoak. I was think of doing tht

then you are pretty much pissing in the wind lol


you would more than likely have a low 10:1 afr
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Old Aug 5, 2008 | 08:26 AM
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Originally Posted by Glex25
That's why you have a activation light.
Also a kill switch for the meth circuit so you can run maps that are meant for non meth.

+1000000

Plus my Meth Kit is controlled by the F-con.
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Old Aug 5, 2008 | 08:29 AM
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Originally Posted by chris'smax
then you are pretty much pissing in the wind lol


you would more than likely have a low 10:1 afr
really? even on the lowest spray power possible, just for my IC pipes to cool off a bit.
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Old Aug 5, 2008 | 08:32 AM
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Do you guys have it set for the meth to turn on at a certain PSI(or RPM)?

Running it all the time?

I have the Utec no control for external stuff like that so i use the meth controller as a stand alone.

Hence my whole reasoning to go with a standalone ems.
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Old Aug 5, 2008 | 08:36 AM
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Originally Posted by Glex25
93+50/50 meth mix = C16

.

I know some site has exaggerated this numbers but if Methanol only have an octane rating of 114 (some site has it 101) then how can this lead to 117 (c16 octane rating) if you are only spraying 50% meth so if you average it down then it should be lower since the big portion of your fuel is still 93 octane. It is probably close to high 90's rather than above 100 octane..
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