Oct 22 2012, 09:58 AM
QUOTE(davidke20 @ Oct 22 2012, 09:51 AM)
Bro mat79,
I do have some finding wish to discuss with you. Last week when I was in Ipor, I hooked up my ECU to a tuning machine in the workshop. I saw the page "Cubic Flow Meter" on the "manifold pressure" category. When I looked into the numbers....
... Have absolutely no idea what it does 
However, later on I've accidently retored my ECU to factory settings
I found the cubic flow meter reading increased. After that when I drive my car, I figured its very hard to maintain vacuum below -0.3bar anymore(compare to reading vacuum gauge before reset ECU always stay below -0.4bar). FC went skyhigh for the rest of 160km. After the reset, almost every 40km drop 1 bar
I tought I was so screwed and something struck my mind, if ECU was reset to factory settings, by right the car should recognize all the surrounding equipment as standard feature. So I change back to original air filter and my vacuum reading in cabin back to normal. I can easily drive the car with -0.4bar, FC back to normal
I assume high flow drop in filter does have an effect of less air restriction, as a result in higher cubic flow to manifold. On the other hand, our ECU is adaptive, which will auto tune itself to match with factory settings. As I reset the ECU, the engine management was confused by the higher air flow(not standard filter air flow), so it spray more petrol to protect the engine from burning lean. I believe the ECU needed more mileage to adapt the driving style/surrounding equipments change before it can fully adopt to run in optimal efficiency. Now I can't put back my drop in filter, if I do the vacuum will be gone and killing my FC. The trouble is, before the reset this has never happen. By right it should run just fine with the drop in filter withouthurting my FC just like before the reset. I'm a little confused now
P/s: still hopelessly having the high flow filter in the boot, don't dare to put them back in the engine bay
wow, such a difference...I do have some finding wish to discuss with you. Last week when I was in Ipor, I hooked up my ECU to a tuning machine in the workshop. I saw the page "Cubic Flow Meter" on the "manifold pressure" category. When I looked into the numbers....
... Have absolutely no idea what it does However, later on I've accidently retored my ECU to factory settings
I found the cubic flow meter reading increased. After that when I drive my car, I figured its very hard to maintain vacuum below -0.3bar anymore(compare to reading vacuum gauge before reset ECU always stay below -0.4bar). FC went skyhigh for the rest of 160km. After the reset, almost every 40km drop 1 bar I tought I was so screwed and something struck my mind, if ECU was reset to factory settings, by right the car should recognize all the surrounding equipment as standard feature. So I change back to original air filter and my vacuum reading in cabin back to normal. I can easily drive the car with -0.4bar, FC back to normal
I assume high flow drop in filter does have an effect of less air restriction, as a result in higher cubic flow to manifold. On the other hand, our ECU is adaptive, which will auto tune itself to match with factory settings. As I reset the ECU, the engine management was confused by the higher air flow(not standard filter air flow), so it spray more petrol to protect the engine from burning lean. I believe the ECU needed more mileage to adapt the driving style/surrounding equipments change before it can fully adopt to run in optimal efficiency. Now I can't put back my drop in filter, if I do the vacuum will be gone and killing my FC. The trouble is, before the reset this has never happen. By right it should run just fine with the drop in filter withouthurting my FC just like before the reset. I'm a little confused now
P/s: still hopelessly having the high flow filter in the boot, don't dare to put them back in the engine bay
btw for my car, open pod and drop in same FC
but dunno why... my be my right foot can adjust according my desire? ATM, still considering wana put back my open pod or not...
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