powermandan
Well-known member
I'm about a month away from fitting a GTB2060VKLR to my 1.9AFN
When I have done turbo swaps in the past, I have been fortunate to be able to get the OEM boost map and just tweak that. As they have all been from 1.9/2.0L engines.
However the 2060 is from a 3 litre engine. So that's not going to work for me this time.
At the same time I am rolling out a logging project that should allow me to record.
- RPM
- EGT
- Exhaust manifold pressure
- Inlet manifold Pressure
- MAF
- AFR
- Fuel pump voltage
- Turbo shaft speed
Trawling the forum if have come up with the following
Compressor:
- Inducer 44.5
- Exducer 60
- Trim 55
- AR is possibly 0.74 (value was listed against gtb2260VK)
I see numerous times the compressor map C226 is described as a close fit to GTB2060 and GTB2260
Tdimeister describes it as
- 60mm exducer
- 42.5 Inducer (calculated)
- 50 Trim
- .51 AR
How do I put this all together and build a boost map?
It seems that I can estimate how much boost turbo will be able to produce at a given RPM. But I will have no idea how much fuel it will take to do it.
I.e. Say I'm injecting 20mg/s at 2000RPM experience tells me that will not product much boost. But I don't see how I could work that out using a compressor map.
Any strategies I could employ would be welcomed
When I have done turbo swaps in the past, I have been fortunate to be able to get the OEM boost map and just tweak that. As they have all been from 1.9/2.0L engines.
However the 2060 is from a 3 litre engine. So that's not going to work for me this time.
At the same time I am rolling out a logging project that should allow me to record.
- RPM
- EGT
- Exhaust manifold pressure
- Inlet manifold Pressure
- MAF
- AFR
- Fuel pump voltage
- Turbo shaft speed
Trawling the forum if have come up with the following
Compressor:
- Inducer 44.5
- Exducer 60
- Trim 55
- AR is possibly 0.74 (value was listed against gtb2260VK)
I see numerous times the compressor map C226 is described as a close fit to GTB2060 and GTB2260
Tdimeister describes it as
- 60mm exducer
- 42.5 Inducer (calculated)
- 50 Trim
- .51 AR
How do I put this all together and build a boost map?
It seems that I can estimate how much boost turbo will be able to produce at a given RPM. But I will have no idea how much fuel it will take to do it.
I.e. Say I'm injecting 20mg/s at 2000RPM experience tells me that will not product much boost. But I don't see how I could work that out using a compressor map.
Any strategies I could employ would be welcomed
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