hi all

i recently changed the air filter on my 1.8t 4x4 for a k&n cone one, car goes well but after a mile or two the code 16795 Secondary Air Injection System: Incorrect Flow Detected flagged up. i cleared the code but again after a mile or two it came back on, it hasnt affected performance but its anoying. i have fitted a small breather type air filter to the secondary air pump hose that went into the original air box. i had a piper cross foam cone filter on before with the same breather filter fitted and it was fine. any ideas

You sure that pipe with the breather is still firmly secured to the sai?

not sure i will have a good look tomorrow.its quite a long pipe thats clamped tight about half way down but i will double check.the only thing thats really been disturbed is the air filter end.still who knows.thanks

Are all the fuses good in the battery fuse box?, haven't had an unintentional incident and popped one by accident have you?.

i've sussed it. After checking all the hoses and fuses i thought to myself what is the code actually telling me...incorrect flow detected..so deciding that the only thing different i had done was fit a small breather type filter to the sai  hose i started there.

the filter was clean so it wasnt that but if i blew through the inlet of the  filter i had to blow quite hard to feel breath coming out the filter itself.the hole in the inlet pipe was quite small bore and deducing that the sai pipe is quite large bore i wondered if that was the problem.so i drilled out the filter inlet pipe as big as i dared, now blowing through it produced masses of hot breath through the filter.refitting the filter and resetting the eml light has provided the best part of 300 miles with no light.i can only presume that the small bore breather filter inlet was restricting the flow of air to the sai.

That could well be it, nice one fingers xd for you

I know what Id do...fit the standard airbox back!

I know what Id do...fit the standard airbox back!

There's certainly not much wrong with them, could always shove a big fat pipe in it!