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Marty
Marty, European Car Expert
Category: UK Car
Satisfied Customers: 400
Experience:  ASE & Bosch Certified Master Tech. Over 30 years experience.
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I did a 1.6l to 2.5l engine swap on my 2011 mazda3 i left

Customer Question

Hi i did a 1.6l to 2.5l engine swap on my 2011 mazda3 i left the original fusebox and pluged in the engine harness for the 2.5l but when i compared the two fuse box the only difference was the tcm fuse on the 1.6 fuse-box its a blank. How can i solve this
Submitted: 1 year ago.
Category: UK Car
Expert:  mike switzer replied 1 year ago.

you would have to disassembly the fuse box to add a pin to the fuse slot. most boxes are built to allow for different options.

Customer: replied 1 year ago.
but what about the wiring from the pin
Expert:  mike switzer replied 1 year ago.

do you have thefuse block for the 2.5 to try and use that. what made you do this engine swap?

Customer: replied 1 year ago.
i needed more power. I do have the fuse block for the 2.5l but the wires were at the firewall.
Customer: replied 1 year ago.
were cut at the firewall
Expert:  mike switzer replied 1 year ago.

engine swaps are a difficult task if the original engine did not have a tch fuse did it have a manual before?

Customer: replied 1 year ago.
no automatic
Expert:  mike switzer replied 1 year ago.

i am not seeing a 1.6l option for that vehicle only a 2.0 or 2.5

Customer: replied 1 year ago.
this vehicle was manufactured for the japanese market/caribbean
Customer: replied 1 year ago.
the united states models are 2.0 or 2.5
Customer: replied 1 year ago.
also i did my research their are 1.6l mazda 3 in the UK