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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor


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Old 08-23-2005, 05:26 PM   #1
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Default Single Cat TBE ok for Zilla 20g?

Currently have a Helix catted DP w/ 3" cbe on stock turbo. Thinking of moving up to a Zilla 20g(with supporting mods). Talking with SS, he gets more torque out of catted systems than catless, and since low-end torque is what i'm really going for here, wondering if it would maybe help instead of hurt. Wondering where the line is drawn for a TBE to be catless in order to make more power.

Any experiences or knowledge on this would be much appreciated.

Thanks,
SV


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Old 08-23-2005, 05:44 PM   #2
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Quote:
Originally Posted by xn00dlesx
Currently have a Helix catted DP w/ 3" cbe on stock turbo. Thinking of moving up to a Zilla 20g(with supporting mods). Talking with SS, he gets more torque out of catted systems than catless, and since low-end torque is what i'm really going for here, wondering if it would maybe help instead of hurt. Wondering where the line is drawn for a TBE to be catless in order to make more power.

Any experiences or knowledge on this would be much appreciated.

Thanks,
SV
I ran a Helix catted d/p with my 20g for a while and it works fantastic. You will have no problems. Good luck!
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Old 08-23-2005, 06:02 PM   #3
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Originally Posted by jgheels2003
I ran a Helix catted d/p with my 20g for a while and it works fantastic. You will have no problems. Good luck!
Sweeet! I plan on a Topspeed tune as well, so hopefully I would get simular numbers. If you are ever down in the ATL area I would LOVE a ride in your current setup.

Thanks,
SV
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Old 08-23-2005, 06:21 PM   #4
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you'll be fine with cats, just wont be able to run leaded gas.
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Old 08-23-2005, 06:43 PM   #5
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so where are you tuning??

topspeed or gwinette?

reasons??
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Old 08-23-2005, 06:52 PM   #6
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Originally Posted by esemes
so where are you tuning??

topspeed or gwinette?
Topspeed (if i decide to go with bigger turbo)

Quote:
reasons??
Doug has more experience with bigger turbos and can tune it in roughly 1-2 hours. SS did my first tune and I think worlds of how great of a tuner and buddy he is, but I want to see what Doug can do. I am previledged to live in ATL and have access to both of these guys.
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Old 08-23-2005, 06:57 PM   #7
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id like to see yer dyno (304.5/340.1), okay??

sounds impressive!

es
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Old 08-23-2005, 07:07 PM   #8
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Quote:
Originally Posted by esemes
id like to see yer dyno (304.5/340.1), okay??

sounds impressive!

es
Here you go.

http://iwsti.com/forums/showthread.php?t=27430
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Old 08-23-2005, 07:16 PM   #9
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AH YES................

how soon i forget.

i had high hopes back then (and will have them again soon)

tell me, what octane was that at?? didya try funnygas?
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Old 08-23-2005, 07:27 PM   #10
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Quote:
Originally Posted by esemes
tell me, what octane was that at??
93 oct

Quote:
Originally Posted by esemes
didya try funnygas?
If i go Zilla 20g then there is always the temptation to try something else, meth injection? who knows...
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Old 08-24-2005, 05:33 AM   #11
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Quote:
Originally Posted by xn00dlesx
Sweeet! I plan on a Topspeed tune as well, so hopefully I would get simular numbers. If you are ever down in the ATL area I would LOVE a ride in your current setup.

Thanks,
SV
Anytime man. The next time I venture down there will probably be for an ACT install and tune. Hopefully...that won't have to happen really soon.


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