Extending the loom for a MAP sensor?

As some might know I've bought a MF2 injector driver to fuel my Sierra turbo project, anyway the loom that came with it was a bit of a mess. Once I'd cut it back to the original wiring I was left with about 10cm of loom.



So I took what I had to a local auto electrician who supplied me with 2 meters of wiring in the relevant colours. Some of the wire is a slightly larger gauge than the original wiring. So........

My issue is regarding the MAP sensor I realise that it is a sensitive piece of equipment. I'm worried about the thicker gauge wire increasing resistance and not giving a good signal.

Here is a photo of the loom.....



.....and here is a closer photo of the difference in wire......


.....and the MAP sensor wires.....


Should I worry or am I over analysing it? I've got a multimeter, but I'm not sure which setting or reading I want to see to know that there isn't too much resistance?

Anyway help would be awesome ;D

Robin