OK guys just failed the annual emmission test.

Initail tune was way off being based on the wideband and what the car wants.

Limits are
CO % 0.300
HC ppm 200
Lamda 0.97-1.030

Initial test HC was in the 7-800 range lambda was around 1.15


I reflashed with last years bin & with steveo's EEHack (increased timing & Idle speed) managed
CO % 0.00
HC 100-150
Lambda eventually came down to 1.034 so F'in close.

A big part of the issue is the 2x3" tail pipes although covering one up raised the lambda back over 1.11.

I'm pretty certain there are no leaks on the pipes, even the cutout has been blanked off.

What should i play with in the tune. It got better as the o2's heated up so fan temps will be raised.

Any other suggestions please.

Cheers
Mitch