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Old 11-24-2008, 09:16 AM
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RBYCC RBYCC is offline
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Join Date: Mar 2007
Location: DELAWARE
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I run twin Garrett T2's which are no longer available.
Each compressor is piped to three cylinders using discrete manifolds.

The smaller turbos spool up extremely fast, no lag and are very quiet.
Boost fixed at .48bar and AFR is 12.5:1 under boost.

Two major players with the best experience on M103 and M104 Turbocharging were Mosselmann and Turbotechnics.
Both chose twin small compressores with low boost and required no modification to the engine internals or fuel delivery system.

As far as dyno numbers they are only a tuning tool givng before and after mod comparisions.
High numbers that are thrown around forums are usually for bragging rights and rarely backed up by any timed acceleration runs.

I pulled 230RWP on a Mustang Load dyno an increase of 100RWP over stock.
With stock 3.07 rear gear timed acceleration to 60MPH is around 5.5 seconds and 1/4 mile high 13's around 100mph trap.
Drag radials will bring the time to mid 13's...
This is on a 4000lb vehicle ( car, driver, fuel)

Don't build a high rwp hand greanade...build it fast but also reliable...!
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