I don't know about the earlier TCU on the 850's but the later 98- stock TCU gets flaky above 12 psi boost.
My 'R' is running stock injector and a 19T (standard) turbo but is boosting to near 20 psi with a IPD TCU. It also has a Rica tune which it had when I bought it and which supposedly takes the engine from 265 bhp to around 310 bhp. When I first got the car it really flew with a hair trigger gas pedal, but the local dealer 'fixed' that by wiping the software and changing my Xemodex ETM operation. Car just does not feel as fast anymore. It has the tune re-installed but they were not able to back date the ETM software.
Neil.
Eliminate fuel cut T5 Topic is solved
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scot850
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- Year and Model: 2000 V70 R
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Re: Eliminate fuel cut T5
2006 V70 2.5T AWD Polestar tune
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2006 XC70 - Our son now has this and still parked in our garage
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1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
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