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One for BT experts - GT28RS, GT28R, GT2871R - which one spools faster and gives wider boost range?

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Old 07-27-2007, 10:08 AM
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Default One for BT experts - GT28RS, GT28R, GT2871R - which one spools faster and gives wider boost range?

Assuming the software is OK to go with which, of course.
Old 07-27-2007, 10:22 AM
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28RS for quick spool and OK top end....2871 for a little more lag but better top end.
Old 07-27-2007, 10:51 AM
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It all depends on what the exhaust housing A/R.
Old 07-27-2007, 11:27 AM
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Default GT28R at lower RPM

28RS & 2871R spool up later, but give you more top end
Old 07-27-2007, 12:06 PM
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Re: How come not many guys seem to go for the "R"? Is it diff. to find soft to go w/ it?
Old 07-27-2007, 12:08 PM
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Re: How would you quantify the diff.?
Old 07-27-2007, 01:39 PM
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Default APR S3 uses the GT28R as an off the shelf kit(hardware + software)

PES does the same with the T28(GIAC).
APR makes software for the 28RS, but only for 2001(I was the test mule)

Other companies(Unitronic, CTAPP, Mika, etc...) only provide software for the 28RS or 2871R.<ul><li><a href="http://www.atpturbo.com/root/turboinfo/gtlineup/gtlineup.htm">GT Turbo line-up</a></li></ul>
Old 07-30-2007, 09:58 AM
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Arent those at best Medium Turbo's??
Old 07-30-2007, 09:28 PM
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Default BT's for a 1.8t, on a 2 liter they would then become "medium".

:P
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