Emmissions - MoT for the use of

Technical Area Engine, Transmission, Exhaust etc
1
  1. My model of MX-5 is: __
  2. I’m based near: __
  3. I’m looking for technical help or recommendations on: __MoT ECU setting - my car has been tuned by BLINKJ, sadly no longer with us - to 180 bhp and has four switch settings where 1 is “original” and suits 95 RON petrol, 2 which is fast road use and need 98, plus two more which are simply bells and whistles. Which of the first two, original or fast, assuming I shall have 98 in the tank, should give the leanest emmissions for next week’s MoT?
2

All else being equal, I don’t think it would matter. Try and book a timed MOT and go for a good Italian tune up blast to get the whole system heated up just before turning up.

3

That is the plan!

4

I asked the tuner the same question when the first MOT was due after my Ecutek remap.

He said it won’t matter, so I just leave it on the tuned map for Vpower.

She’s had seven MOTs since.

5

Me too (7 MoTs) but last year was tricky and with hindsight, I don’t think I got the engine hot enough before I went in for the test