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If it’s got a wire to it, then it’s a MAP tstat I believe too.
I think there are cooler map tstats someone makes that still set an SES light/code due to the DME not seeing the running temp it needs. Others run them with no problems. As Andrewwynn mentions, guys also run non-map tstats with a resistor in place of the map plug to fool the DME.
I’d recommend the OP do some reading over on bimmerforums, particularly the e34 board as they’ve been having this discussion for years, and guys have gone all sorts of different routes. A couple guys even engineered a box to make the MAP function progressive (rather than the “1 or a 0” BMW made it), and programmed it to open at whatever lower temps they wanted.
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Current
Original owner 2002 E53 X5 4.4i to 4.6i swap
2026 G80 M3 6 spd
2025 G06 X5 50e
Former
1972 Audi Fox
1986 Saab 900S
1996 BMW Z3
1998 BMW E36 M3 Sedan
2004 BMW E46 M3
2006 Audi A3 Quatro
1993 Mopar 318 Jeep Grand Cherokee
2015 V6 Jeep Grand Cherokee
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