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Hello, can someone answer, I have 147 1.6 ts 77kw 105ps and engine is blow, I want a swap to 1.6 88kw 120ps, does I need a new ecu for that or I can only insert that engine and run it like its a 105
 

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2010 Alfa Romeo Mito 1.4, 2003 Alfa Romeo GTV Phase 3 JTS
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Hello, can someone answer, I have 147 1.6 ts 77kw 105ps and engine is blow, I want a swap to 1.6 88kw 120ps, does I need a new ecu for that or I can only insert that engine and run it like its a 105
You need the ecu if you want the extra power as if the engine is mechanically identical it is all in the map. Then you need the door locks, immobiliser, key set to go with it
 

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Just to clear up any confusion, it will be absolutely fine to fit the 120ps engine and leave the ecu and wiring alone, just swap as many sensors and such like off your existing engine as you can
 

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2004 Alfa Romeo 156 1.8TS
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You need the ecu if you want the extra power as if the engine is mechanically identical it is all in the map. Then you need the door locks, immobiliser, key set to go with it
Doesn't the 120 have cam variator and variable intake? Whereas the 105 doesn't?
 
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So in other words.. ECU, wiring loom, immobiliser etc. is needed for this swap, as the cam variator will otherwise not be functional = no real power gain. So it's not really a feasible swap.
 

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It may work. Depens on the cam timing when variation is in off position. I think he was just wanting to use the engine and keep it operating as a 105. It would need a look up on eLearn to confirm.
 

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The easy thing is to swap the 105 inlet camshaft and respective followers into the 120 engine. No variator, no problem.
 

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Yep, different bearings, different seals. Would need a whole new cylinder head to go with the camshaft.
 

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Yes, the heads differ due to VVT in the 120. I think that the wiring looms may be the same.

The main issue is needing the BCM (for immobiliser) and engine control module to allow it to not be immobilised.

If it was me, I'd do the swap but send the ECM off to Squadra Tuning to have a modified map for the 120 version installed onto the original 105 ECM. It is money though.
 
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