jacko
New member
- Joined
- Nov 24, 2007
- Messages
- 2,840
the maf sensor sends a signal to the ecu to let it know how cold the air is....its a thin wire thats heated up & the voltage required to do this is detected and helps to fuel the engine....
(silly 'chips' can confuse the maf and ecu and you end up over fuelling your car which kills the bore liners and the cat converter.)
this guide is how to de-restrict the airflow through the maf to help the car breath better (same theory as adding a better air filter).
i will not say that you will gain power.....in case someone disagrees but my car does feel less 'restricted' now!!!!!!!!!
get a spare maf or take your off......
basically; anything that looks like its getting in the way of air passing through VERY quickly needs to be removed or smoothed. i used a dremel and a file. use sanding bobbins on the dremel; the stones are too tough and get easily clogged. you will need approx 10 sanding bobbin doodars
this is the mk1 version....still got the massive lump in the middle as i needed to experiment & i like to do a bit at a time rather than going mad & wondering why it didnt work! i have seen ones with the centre removed & i am doing this next but as mine is now it flows so much easier the car wouldnt idle for 2 weeks til the ecu adapted!
[albumimg]858[/albumimg]
all sharp edges, steps, lumps etc removed or smoothed....some argue that polishing the whole lot smooth will help but i am still experimenting....
mk2 version / 'for sale' version i am doing on the lathe. intake is chamfered to 30degrees, exhaust to 30 and 20 degrees and a few edges smoothed. sold a few now (exchange) and people have been very happy. £15 posted (exchange-will need the old one back, you pay postage)
(silly 'chips' can confuse the maf and ecu and you end up over fuelling your car which kills the bore liners and the cat converter.)
this guide is how to de-restrict the airflow through the maf to help the car breath better (same theory as adding a better air filter).
i will not say that you will gain power.....in case someone disagrees but my car does feel less 'restricted' now!!!!!!!!!
get a spare maf or take your off......
basically; anything that looks like its getting in the way of air passing through VERY quickly needs to be removed or smoothed. i used a dremel and a file. use sanding bobbins on the dremel; the stones are too tough and get easily clogged. you will need approx 10 sanding bobbin doodars
this is the mk1 version....still got the massive lump in the middle as i needed to experiment & i like to do a bit at a time rather than going mad & wondering why it didnt work! i have seen ones with the centre removed & i am doing this next but as mine is now it flows so much easier the car wouldnt idle for 2 weeks til the ecu adapted!
[albumimg]858[/albumimg]
all sharp edges, steps, lumps etc removed or smoothed....some argue that polishing the whole lot smooth will help but i am still experimenting....
mk2 version / 'for sale' version i am doing on the lathe. intake is chamfered to 30degrees, exhaust to 30 and 20 degrees and a few edges smoothed. sold a few now (exchange) and people have been very happy. £15 posted (exchange-will need the old one back, you pay postage)