Hi all,
sparked by a newsmail received by TDI-Tuning about their new CRTD4 product, I went to their website, just out of curiosity.
When I got to the before/after power/torque graph something looked a bit strange. Rolling the mouse over the graph lines there are popups showing the performance values for each curve at 500RPM intervals. But...
The power curve for my 1.6 CRD showed max power at 6000RPM (!) – and still going up at that point! – and the torque curve maxed at 3500RPM (!). Relative values should be 4400RPM and 1500-2500RPM, as per owner's manual.
So, being an over-suspicious type, I went to check the published graphs for two more cars: Audi A4 1.8 petrol and Alfa Romeo Giulietta 1.6 diesel.
One should expect very different curves – both in height AND in shape – because of a petrol engine and because of a diesel engine which is advertised for more torque than Skoda's.
Well, comparing the three graphs, we can see the curves are veeery similar. Expecially the torque curves are virtually identical among the three cars. Main – only? – difference is the torque/power level which is indicated.
I wouldn't want to jump to conclusions but... I'm not 100% sure anymore that those advertised "custom mappings" do are so "very" custom.
Opinions?