Jetting on standard DATR/DAT type Carb

[Ferrit]

Seems you lot know more than a garage with a dyno and a AFR systems and a lot of my money!

Car runs really well and even on a short blast the plug colour is getting more like it, thanks again all and especially Capriblu :-)

before and after

[WestonE]

It makes me wonder if Hardings put the apprentice on the job un supervised. This is something I experienced at Emerald once leading to a hopeless ECU map with potentially terminal timing. It is so hard to find competent Carb tuning Dynos now and ECU tuners need to have plenty of experience alongside good kit. Beware 2X 30 somethings who setup last week or people who do not care about your car. Perhaps Northampton Motorsport or Aldon Automotive for trusted work based on decades of reputation. It does look like you are very close to having this finally sorted.     

[Ferrit]

Here we go after a trouble free 120 mile to and from Goodwood.  My sons had a driving lesson and there was a Alfa track day bonus going on

I drove down the A3 at 3000 rpm ish, and back roads had some fun on the way home.  I managed to shut my normally talkative son up with a couple blasts through the rev's and gears.  So what do you make of the plug colour on Champion N7Y's on the jetting recommended by Capriblu here

no2 (with the car in the background) and no4

Mark

[SanRemo78]

Bit of soot on the bottom of the plug but those electrodes look pretty healthy to me!

[Ferrit]

Drive it harder? ;-)