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1994 Volvo 850 Turbo Change the ECU with A Non Turbo ECU Parts

Posted by merzaha gulhku Wednesday, August 7, 2013 0 comments

When the ecu of my 1994 Volvo 850 Turbo was showing some bad readings about the knock sensors, I picked and pulled the old ecu and got a new ecu from a 1993 volvo 850 non turbo. Is it possible for an ECU from a turbo car to replace ecu from a non turbo car? Thanks.

Answer: No. The turbo creates a significant change, since the engine compression is changed significantly. 
A/F Ratio
Wastegate control
Banked injection
Would be different or missing from the ECU. The knock sensor sends signals when the A/F mixture pre-detonates before it can be ignited by the spark plug, and the computer corrects it with VVT. You need to buy the correct ECU.