20G set up - Subaru WRX Forum
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#1 Old 12-15-2011, 04:09 PM
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20G set up

so i estemated that the setup whould run me $6k-$8k.
second what is a good fmic? is INJEN good?? under $1,400
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#2 Old 12-15-2011, 04:22 PM
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#3 Old 12-15-2011, 06:17 PM
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You dont NEED a FMIC for a 20G. You can, but Im running a TMIC on my 20G and its not a limiting factor on my car (yet).

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#4 Old 12-15-2011, 07:22 PM
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Top mounts are more prone to heat soak and limited by size.

That said, ill probably never use a front mount because I like my functional scoop

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#5 Old 12-15-2011, 07:30 PM
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OKAY how about is there any other turbos thats spool up as fast as a 20g but better top end?? and how about the tranny upgade what gears is there cheaper then ppgs?
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#6 Old 12-15-2011, 07:40 PM
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Fast spooling and 20g do not go hand in hand.

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#7 Old 12-15-2011, 07:46 PM
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^^nor does better top end without planning on a lot more money. I'd say reverse that question would make more sense. Top end of a 20g with quicker spool if your putting it on a stock motor.
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#8 Old 12-15-2011, 08:40 PM
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ya a similer top end as a 20g but faster spool up. everbody says go with the 18g but i feel its not gone be inof top end for me. i wana kill chiped bmw. and american crap cars. my bother was racing an m3 on highway his g37 stoped going at around 141. and the m3 was going and going.
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#9 Old 12-16-2011, 05:15 AM
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Well the 18g will make boost all the way passed the abilities of the stock motor and has the spool of an 16g somewhat, slightly slower. really depends on tune and the other modifications you put on the car...

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#10 Old 12-16-2011, 10:55 AM
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When considering what turbo to get you need to factor a couple other things. There are a lot of configurations for the turbos as well. The size of the cold side and the hot side housings will change the speed of the spool up and the top end. For instance you have the TD05 and TD06 20g's which are both available with 7cm and 8cm hotsides.

Here's a good read: Turbo FAQ: Read if you are thinking of upgrading! - NASIOC

Good pic from that FAQ:

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#11 Old 12-16-2011, 10:58 AM
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A rotated 30R will spool faster than a 20G. I didn't hit my target 19 psi till 4,300 RPM with my 20G.
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#12 Old 12-16-2011, 11:37 AM
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Was that PnPnC and all the goodies Justin?

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#13 Old 12-16-2011, 02:55 PM
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Quote:
Originally Posted by pzr2874 View Post
Was that PnPnC and all the goodies Justin?
Heads and throttlebody only. Without the 3-port BCS or EWG it would have spooled even slower.
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#14 Old 12-16-2011, 03:55 PM
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Quote:
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A rotated 30R will spool faster than a 20G. I didn't hit my target 19 psi till 4,300 RPM with my 20G.
I hit target boost on my 20g at 4000 and it's a TD06 turbine housing. Granted I am using a GMBCS and a few other things that play into that, but my compression is way lower than yours is also....

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#15 Old 12-17-2011, 01:38 AM
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7 or 8 cm housing?

I also have a FMIC.
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