Was my F53 ECU "chipped"?

[Magister54]

Hi gentlemen,

I bought a new to me 2006 Monaco, it has the Banks powerpac system, from header to exhaust tip, a k&n filter too. It is the Triton V10 30V with 5 speed auto.

When I cruise on the highway at 60mph for instance, if I press the tow/haul button, the tow/haul light on the dash become on, but the little light on the "shift bar" does not. Also I tought that when going in tow mode, the ECU only use 4 speed instead of 5, so I tought it would downshift, but it does not.

Is it a sign that the ECU was reprogrammed? I have an OBDII bluetooth module, can I check some info (mode 09) to know if it was chiped?

Thanks.

[jamesrxx951]

On chassis that have the 5R110W transmission there is no light in the shifter lever. It only has the light on the instrument cluster. When tow/haul is activated all 5 forward speeds are still used. However you may noticed firmer upshifts at higher RPMs, shift points at higher RPMs and extra engine braking from downshift scheduling when slowing down.

As a side note it appears that the tow/haul button assembly has a light in it but I don't see any circuits to keep the light lit.

[Magister54]

Thanks for the answer! On my previous MH (F53 1994) I had the light in the shifter lever so I was wondering... And I thought I read somewhere that tow/haul only used 4 speed, I must have misunderstood something.

It's because I don't know if the previous owner had the ECU reprogrammed or not, in case I want to use 5startuner.