S4 Motor in S5... ECU issues?
#1
S4 Motor in S5... ECU issues?
I need to know what issues I'll run into doing this swap.
I have everything from the s5 long block, OMP, injector, UIM/LIM,
I have the s5 ECU
I also will have everything I need from the s4 motor except the ECU, and fuel injectors.
Since the s4 rotors have less compression, what issues might I have with the s5 ECU?
Do I need to use the S4 ECU?
I searched through 7 pages of results and got nothing helpful.
If you have links to a similar write up, I'd appreciate it.
If you have done this swap, I'd appreciate your feedback even more.
Thanks
I have everything from the s5 long block, OMP, injector, UIM/LIM,
I have the s5 ECU
I also will have everything I need from the s4 motor except the ECU, and fuel injectors.
Since the s4 rotors have less compression, what issues might I have with the s5 ECU?
Do I need to use the S4 ECU?
I searched through 7 pages of results and got nothing helpful.
If you have links to a similar write up, I'd appreciate it.
If you have done this swap, I'd appreciate your feedback even more.
Thanks
#3
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I was contemplating doing this too; I have a low mileage rebuilt S4 turbo engine sitting around, and an S5 TII with a blown engine, so I thought I could save myself a few grand and just swap it in...
#6
Thanks HAI-TEK7,
By saying
you mean just take the s4 short block, and use s5 ecu, omp, injectors, front cover UIM/LIM?
Will there be a fuel issue with the s5 ecu managing the s4 rotors, since they are lower compression? Will the motor be running fat?
By saying
with all the S5 stuff swapped over
Will there be a fuel issue with the s5 ecu managing the s4 rotors, since they are lower compression? Will the motor be running fat?
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