Mushroom top. With a large donaldson air filter which has a primary and secondary filter but this doesn't seem to be restrictive at all
 
I swapped my transfer bx for a Disco one on my Td5 90, I did a run to Devon, around Devon and back home to Notts, averaged 35.5 mpg, well pleased with that. It was around 5 mpg better than before I'd swapped it over.
 
I thought about that briefly but decided nah, I like my fender to be able to do what it says on the tin if I ever need it to
 
I thought about that briefly but decided nah, I like my fender to be able to do what it says on the tin if I ever need it to

Ive done it on my 200tdi and it's brilliant, now want to do it in my TD5 with a stage 1 tune- Now that will be good :)
 

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