Slow start of the line

[redcivic47]

I was on the last set of lights at the start of a dual carriageway.

Lights went green, i Released the brake, disengaged the clutch at 1-5mph, when it was fully disengaged I put my foot down and there was a good 2 second delay before any response.

Boyyy did the car go after that as usual but it never did this delay before. What do you think it could be?
My exhaust does sound a tiny bit louder without any mods, what could be causing this sound and delay in response?

Thanks

 

[^Joe]

Has it done it again?

Maybe it was just a poor start.

Have you checked for any movement in the exhaust at the joins?

 

[redcivic47]

I shall check and update.

Thanks