torqueflow

[blitzracing]

Another thought- there are some 5 ltr non catalyst fuel maps available for down load now- so if you dont have catalysts or are prepaired to remove them (need a friendly MOT man) you could simply switch the ECU to the non catalyst map- this is much less prone to shunting than the catalyst fuel map- you can then tweek the low speed mixture with the control on the side of the AFM.