Austarion

i dont know what maf sensor you have on the AU
cars but we have the karmen vortec maf sensor
any of you guys try this

You need a way way bigger picture.


If that's tearing out the rear honeycomb... you just effectively fucked it.

honeycome is on the other end, this end mounts to the lid
this maf is from a 1.8L engine so im not hurt buy doing this to it.
pics below are not using the maf from above, using a stock 88-90 maf.
the hard pipe is from the 300zx, 80's models






these 2 nipples cut & fill in with J B weld or similar. the nipple you can barely see leave it for emissions connection

You just leaned out the fuel mixture quite a bit.. I'm not sure if it'll be a bad thing because it's a 1.8L unit.. I'm curious why you didn't just get the 1G MAS, as it's an upgrade in bone stock form over the stock one.. If you were to cut that much out of a 1G MAS, you'd really be fucked. That's ALOT of extra unmetered air getting through.. I hope you have a wideband.

If you cut the hole out like that then the AFM won't work properly at all.. The reason why there's holes there of a certain size are to result in (for example) Half the air going throught the metering tunnel and half the air going through the small holes. enlarging the hole may mean more like 3/4 of the air going through the bypass and 1/4 being metered, leaning the mixtures out by 1/2, seriously lean.. The computer will put enough fuel to match the amount of air going through the metering port but there's a whole bunch more going round it.
If you haven't run it yet I would be extremely careful, you can easily melt things like pistons running lean on boost..

I remember on the 88 Mitubishi Magna AFM (similar but updated design) there were about 4 small holes, about 2-3mm some plugged, some not. I figured there were to allow for calibration in the factory. If changing 1 or 2 4mm holes could lean or richen up the mixture, imagine making a 20+mm hole..

With a chip in the computer it may work, otherwise BIG warning lights right here to prevent :o :glare:

Most people here run aftermarket ECU's we don't bother with airflow meters, etc.
That's why you rarely find any posts on this sort of thing.

mrb1 wrote:Most people here run aftermarket ECU's we don't bother with airflow meters, etc.

Neither do I, I switched to MAP and IAT sensors.. :D

pics below are not using the maf from above.im using the 88-89 maf
thats just a 1.8L maf i had taking up space