Towing with remapped Brera
Took the Brera and van to Spain for the winter. Towed well apart from the following :- despite being a 6 speed box ( Qtronic) the ratios are actually quite wide. When towing under any sort load the car from time to time gives an almighty shudder and feels as if the engine has missed a beat, and this is surely putting a lot of strain on the drivetrain. The shudder happens always around 1600-1700 rpm in 5th or 6th gear,and the engine is definitely unhappy at these revs. The engine will pull quite well though at even lower revs, even with the van attached. The engine has the Angel Tuning de- DPF and disabled EGR and remap. Any ideas ?, I wondered at what sort of rev range the Swirl flaps open and close and if this coincides with whats happening.
And before anyone says I shouldnt be towing with a car as gorgeous as a Brera, ...it has the weight, the power and torque and broad stance with very short rear overhang to make a good tow vehicle !