# help picking turbo.....plotted compressor maps inside
**URL:** https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112
**Category:** NYSpeed Automotive
**Created:** [November 29, 2005, 11:23pm UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112 "2005-11-29T23:23:02Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)
#### Post date: [November 29, 2005, 11:23pm UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/1 "2005-11-29T23:23:02Z")
ok, helping a buddy out with building a turbo kit- :snky: on who that is…anyway, we plotted a bunch of compressor maps and we got it narrowed down to 2 choices where all the points stay on the map without going out of the surge line…the gt30r and the gt35r…heres our plotted maps…which one do you think is a better choice???
P.S. looking to max out around 20psi give or take for track days and more like 14-15psi DD.
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### Author:  [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)
#### Post date: [November 29, 2005, 11:29pm UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/2 "2005-11-29T23:29:03Z")
oh yeah, .82AR or 1.06AR on the turbine??
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### Author:  [@mike125k](https://forums.speedlife.net/u/mike125k)
#### Post date: [November 30, 2005, 4:03am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/3 "2005-11-30T04:03:15Z")
It helps if you give us the displacement of the engine in question
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### Author:  [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)
#### Post date: [November 30, 2005, 5:18am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/4 "2005-11-30T05:18:38Z")
> [@mike125k](#):
>
> It helps if you give us the displacement of the engine in question
:wstupid:
as well as what rpm those points are plotted for
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### Author:  [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)
#### Post date: [November 30, 2005, 7:16am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/5 "2005-11-30T07:16:03Z")
it’s for a 2.2L engine and the plots pointed are at 4000rpm and 8000rpm.
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### Author:  [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)
#### Post date: [November 30, 2005, 7:23am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/6 "2005-11-30T07:23:32Z")
my plots show the gt30 being best suited for 18psi(ish)
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### Author:  [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)
#### Post date: [November 30, 2005, 8:13am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/7 "2005-11-30T08:13:45Z")
thats what we were thinking as well, we followed your post on how to read/plot compressor maps to do those and also were leaning towards the gt30…thanks alot zerodaze your my hero…now…which turbine a/r? .82 or 1.06, we are looking for good mid-range to high-end power
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### Author:  [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)
#### Post date: [November 30, 2005, 12:48pm UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/8 "2005-11-30T12:48:53Z")
i wouldnt go too big on the hot side. an extra 10 ponies up top isnt worth 1000rpm of extra lag, and shitty mid range power.
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### Author:  [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)
#### Post date: [November 30, 2005, 1:09pm UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/9 "2005-11-30T13:09:00Z")
i also found the gt30r available with the .63 hot side…so would you go that small or the .82 then?
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### Author:  [@MiniSRT4](https://forums.speedlife.net/u/MiniSRT4)
#### Post date: [December 1, 2005, 1:00am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/10 "2005-12-01T01:00:46Z")
is this for sloma?
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### Author:  [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)
#### Post date: [December 1, 2005, 5:02am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/11 "2005-12-01T05:02:25Z")
> [@focusinprogress](#):
>
> i also found the gt30r available with the .63 hot side…so would you go that small or the .82 then?
63
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### Author:  [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)
#### Post date: [December 1, 2005, 7:29am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/12 "2005-12-01T07:29:00Z")
thank you once again zerodaze. +3 imaginary karma for you
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### Author:  [@95AccordVtec](https://forums.speedlife.net/u/95AccordVtec)
#### Post date: [December 1, 2005, 8:17am UTC](https://forums.speedlife.net/t/help-picking-turbo-plotted-compressor-maps-inside/5112/13 "2005-12-01T08:17:25Z")
No Mike it’s not for me, but I wish it was. The only thing I’m shooting for this summer is to get my car on the road