so now ive fitted an air flow meter to my octy vrs and it still seems to be boosting when it feels like it or sometimes just juddering as it goes in boost and back out.. do i now have a faulty N75 or could it be something else.. i had it on the diagnostics and only comes up with P1114 sensor 1 bank 2

and P1118 sensor 1 bank 2 someting about resistance to high or something along them lines..

Log the brake light switch on VCDS. A friend of mine had problems with his, If the ECU sees the brake switch activated it'll close the throttle body.

Try it yourself, full throttle, full boost, and just very lightly touch the brake, it'll cut the boost.

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Or yes, it could be a faulty n75

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Or yes, it could be a faulty n75

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wouldnt a faulty n75 come up witha fault code..?

Gave the break light switch a quick check and it seems to be in order so I'm guessing it's the N75

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How did you check the brake switch?

Hooked up my diagnostics when the brake pedals pressed it says the break light switch is operating when I let go it says not operating

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Does it say operating the instant you touch the pedal or when its a good way depressed?

Those codes are for the O2 sensor why did you change the maf ??

Does it say operating the instant you touch the pedal or when its a good way depressed?

No it takes a sec to change

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Those codes are for the O2 sensor why did you change the maf ??

The car didn't ever have a maf and the O2 sensor faults are because my cars lpg converted so obviously LPG burns different to petrol with it being gas form

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