Engine swap compatibly. Need help!

BenS60 · Post by **BenS60** » 28 Aug 2021, 16:02

Does anyone know if I can swap the engine from my 2004 S60 2.5t B5254T with a 2003 Volvo v70 2.4T B2544T?
It looks practically the same with dual overhead cams. Will the wiring harness work from the S60 or will I have to grab it from the V70?
Will i need to flash the ECU or will it be compatible without flashing?
If anyone knows.
Thanks

darylrobert · Post by **darylrobert** » 29 Aug 2021, 06:55

i have a 2.4T B5244T-3 its not dual VVT only exhaust. wiki says the 2.4t b5244t-4 is dual so would need a ecu flash

Post by **vtl** » 29 Aug 2021, 09:41

You can't do that without reflashing the ECM with a proper firmware for that engine. And sync it with CEM.

BenS60 · Post by **BenS60** » 29 Aug 2021, 15:09

darylrobert wrote: ↑29 Aug 2021, 06:55 i have a 2.4T B5244T-3 its not dual VVT only exhaust. wiki says the 2.4t b5244t-4 is dual so would need a ecu flash

Thanks for the info.
I checked the 2.4t engine and I only have the exhaust selonoid

BenS60 · Post by **BenS60** » 29 Aug 2021, 15:11

vtl wrote: ↑29 Aug 2021, 09:41 You can't do that without reflashing the ECM with a proper firmware for that engine. And sync it with CEM.

How much does reflashing usually cost?