Yes, the point for now aged original electronic is good and as years past will become more apparent. If using original ECU and some strange behaviors start to occur maybe is not a bad idea to be checked by specialist and likely to be changed some capacitors as they age, but have to be good one, as otherwise may be forced to buy another ECU. Yes, the progress in factory and aftermarket ECUs is very big in recent years.


The new season for this car has not started yet, but there is something big prepared for it already.
The idea for it appear in my mind for first time even before the car start to move with current setup I think. And during "Black Friday" people normally buy other type of goods, but that is for normal people

JPEG image 2.jpg JPEG image 5.jpg JPEG image 6.jpg JPEG image 8.jpg JPEG image 9.jpg JPEG image 10.jpg JPEG image 11.jpg JPEG image 12.jpg JPEG image 13.jpg
Borg Warner EFR7670 T4 Twin Scroll 0.92A/R with internal wastegate

The difference in maximum compressor flow capacity as per map is not so big between this and EFR7163, but size wise and in advertised power rating by BW is significant. It is bigger than current EFR7163 T4 TS IWG in basically every aspect - compressor wheel, turbine wheel, turbine housing and A/R, center housing, length. It is part of bigger frame range B2 and 7163 is from smaller B1. As per wheels size and flow it is similar to Garrett GTX3576R. Currently the car is very fast and have good response for its power and practically on the road is not needed more and bigger turbo with corresponding shifting of power to the right. But when you go to power route generally always is strived for more and I'm also interested to try and see how will be with bigger turbo. From comparing drawings of both and what I can see in engine bay currently I expect this change to be quick with just some changes to the intake. Relative position of flanges on turbine side is the same from what I see and read so expect direct fit on exhaust manifold and downpipe. Also my plan is if I really don't like the car with it to be able to quick and easy return to current turbo, i.e. something don't fit new one and cannot be easily prepared/sourced to be made new for it and old to be kept. I expect lower backpressure and higher power at same boost levels, which is normal going to bigger turbo. And lower backpressure should be better for durability as less heat and pressure at 'exit' of engine.