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Old 09-04-2010, 12:17 AM   #1
wrxmadcorona
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Default What boost to start spraying meth

HI as above.. Although its recommend to start at 8 PSI. I was wondering.. what are the boost you guys set to start spraying of meth.

i was thinking to start at around 14psi. Is it good?

cheers
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Old 09-04-2010, 01:00 AM   #2
sti3573
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Old 09-04-2010, 01:19 AM   #3
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This must not be a frequently asked question because I don't see it in the FAQ.
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Old 09-04-2010, 01:34 AM   #4
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Originally Posted by NSFW View Post
This must not be a frequently asked question because I don't see it in the FAQ.



If I were to run meth I would have it start spraying around 5psi, because that's when you make the closed loop to open loop transition and you need a richer afr than 14.7.
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Old 09-05-2010, 10:28 PM   #5
wrxmadcorona
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Originally Posted by sti3573 View Post
If I were to run meth I would have it start spraying around 5psi, because that's when you make the closed loop to open loop transition and you need a richer afr than 14.7.

Wah.. that really make sense.. Actually my intention of running it at 1bar.. is due when I'm in track. With my 6L tank, its seems i cannot go for enough laps.. ..
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Old 09-06-2010, 12:22 PM   #6
sti3573
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Really just depends how aggressive you want the tune.


Quote:
Originally Posted by wrxmadcorona View Post
Wah.. that really make sense.. Actually my intention of running it at 1bar.. is due when I'm in track. With my 6L tank, its seems i cannot go for enough laps.. ..
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Old 09-06-2010, 12:40 PM   #7
simplyyestb
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mine starts at 7psi
lol just take some extra meth with you to refill your tank
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Old 09-07-2010, 08:51 PM   #8
wrxmadcorona
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mine starts at 7psi
lol just take some extra meth with you to refill your tank
yup that is the only way


now looking for spec C 12L tank.. but afraid that will add up a fair bit of weight to the trunk..
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Old 09-08-2010, 09:47 AM   #9
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carefull with the spec c tank... when half empty, it will cause your WI to starve at high G turns...you will need a surge tank
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Old 09-08-2010, 01:51 PM   #10
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Not that it specifically applies to a WRX... but I used to hang with a bunch of guys that ran water/methanol injection on their Cobalts. They always started spraying at 10PSI b/c above that was when the IATs really started jumping up.
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Old 09-08-2010, 08:59 PM   #11
wrxmadcorona
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carefull with the spec c tank... when half empty, it will cause your WI to starve at high G turns...you will need a surge tank

wow.. if that case means i will need to hook up a surge tank below the spec c tank then connect to the pump?? do you have any pics to show me?
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Old 09-09-2010, 01:17 AM   #12
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Old 09-12-2010, 09:50 PM   #13
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no match found...
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Old 10-01-2010, 07:34 PM   #14
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Well i know on my dodge i was runin about 17lbs of boost and had mines start at 7psi and maxed out around 13 and that worked good for me. I havent tride meth with my Subi yet though
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