CR bluetop EU

[punkara]

there are 2 types of OEM pistons for the 4AGE BLUE TOP with T-VIS (the same goes for the later RED TOP non T-VIS but higher comp.):
1) Hi comp Euro Map no cat 10.0:1
2)Low comp US/Swiss/Sweden AFM + cat 9.4:1

the first are used with the Map sensor no cat version and put 124hp
the second were used on AFM+Cat+EGR set ups for the US, Switzerland, and Swden and put out 116hp

So, yes, even if one eliminates EGR, the compression will still be lower, so do not expect the 124hp gain. further the ECU's used on both set ups differ NOT only in the MAP/AFM pick up signal, but also in their tuning, where the AFM ecu is tuned to accept EGR gases.

In my personal experience, the elimination of the Cat and the EGR, brings worse prformance of the engine!
keeping those systems alive and in good working condition, is the best way, to have a proper 4age for further tuning up, unless you are planning for a major mods and change the EFI etc.

just my 2 cents...