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Old 01-31-2010, 06:20 PM   #1521
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yeah
but he bought a crashed 323ci and transferred seats engine and some other crap from it
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Old 01-31-2010, 06:24 PM   #1522
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ah ye ns

i cant believe how expensive the cars are...
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who da F done that?
prestige warehouse or who?
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Old 01-31-2010, 06:26 PM   #1523
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yeah very expensive
good thing though is that they kinda get there money back on mods too over here

ohh peter ill get some pics of the *** cars going around you'll go nuts haha
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Old 01-31-2010, 06:38 PM   #1524
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lol ns.. the japanese imports will be through the roof price wise, id imagine...


many nice driving roads over there???... i know when i went to Greece.. i was tripping out at how siik the roads were...
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who da F done that?
prestige warehouse or who?
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Old 01-31-2010, 06:39 PM   #1525
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yes i went on one today it was like a mini great ocean road!
not as good though haha
some good roads though towards the hills and stuff

they dont actually buy *** cars here they get them imported
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Old 01-31-2010, 06:45 PM   #1526
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yes i went on one today it was like a mini great ocean road!
not as good though haha
some good roads though towards the hills and stuff

they dont actually buy *** cars here they get them imported
ye ofcourse.. i doubt, 32GTR's etc were sold there locally new lol
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who da F done that?
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Old 01-31-2010, 06:46 PM   #1527
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haha good point
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Old 01-31-2010, 06:49 PM   #1528
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umm bed time?

3 in the morning man
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who da F done that?
prestige warehouse or who?
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Old 01-31-2010, 07:25 PM   #1529
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A little physics101, when it's hot the air is less dense, hence your engine won't be getting in as much as it does when it's cooler, so you'll have less power as your air/fuel ratio will be lower than it is on a cold day.
ahaha, yeh i know, cept i don't remember noticing it before...of course, i didn't have my car this time last year, so maybe this is the first time i've driven in weather this hot...hopefully it is just the hot air, not something more sinister.

also the physics nerd in me must correct you here...the air/fuel ratio will remain the same (ie 14.7 or whatever the DME thinks is right, engine isn't gonna run rich or lean), but rather the maximum amount (in Moles - thus the number of O2 molecules) of air that can be drawn into the engine will be less, hence less fuel combusted, hence less power.
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Old 01-31-2010, 07:41 PM   #1530
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ahaha, yeh i know, cept i don't remember noticing it before...of course, i didn't have my car this time last year, so maybe this is the first time i've driven in weather this hot...hopefully it is just the hot air, not something more sinister.

also the physics nerd in me must correct you here...the air/fuel ratio will remain the same (ie 14.7 or whatever the DME thinks is right, engine isn't gonna run rich or lean), but rather the maximum amount (in Moles - thus the number of O2 molecules) of air that can be drawn into the engine will be less, hence less fuel combusted, hence less power.
Correct, but your assuming i was refering to volume, not mol, when i had previously made explicit mention of density. I guess i should used O2 / fuel ratio, rather than air/fuel.
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Old 01-31-2010, 07:54 PM   #1531
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no, the O2/fuel ratio will remain correct, always. the MAF sensor itself measures air MASS. as mass is directly proportional to the Mole of air (and thus Mole of O2) coming into the engine, the O2/fuel ratio will always be correct as the engine has an accurate measurement of air mass.
i.e MAF sensors are always accurate, regardless of air temp.
other cars that use MAP (Manifold absolute pressure) sensors, use the RPM, manifold pressure, and ambient temperature to derive air mass.
the 14.7:1 air/fuel ratio is by mass, not volume
problem is that with hotter air, less air (and thus O2) by MASS, will fit into each cylinder, and this determines how much fuel the DME will inject, and thus combust, each cycle. it's has the same effect as reducing the effective engine capacity.
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Old 01-31-2010, 08:06 PM   #1532
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no, the O2/fuel ratio will remain correct, always. the MAF sensor itself measures air MASS. as mass is directly proportional to the Mole of air (and thus Mole of O2) coming into the engine, the O2/fuel ratio will always be correct as the engine has an accurate measurement of air mass.
i.e MAF sensors are always accurate, regardless of air temp.
other cars that use MAP (Manifold absolute pressure) sensors, use the RPM, manifold pressure, and ambient temperature to derive air mass.
the 14.7:1 air/fuel ratio is by mass, not volume
problem is that with hotter air, less air (and thus O2) by MASS, will fit into each cylinder, and this determines how much fuel the DME will inject, and thus combust, each cycle. it's has the same effect as reducing the effective engine capacity.
Ahh, intersting, thanks. I guess you learn something new everyday
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Old 01-31-2010, 08:09 PM   #1533
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i just learnt who the forum geeks are.
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Old 01-31-2010, 08:12 PM   #1534
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Old 01-31-2010, 08:17 PM   #1535
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Sonal.. we can discuss this matter on Wed night aswell!!
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who da F done that?
prestige warehouse or who?
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Old 01-31-2010, 08:27 PM   #1536
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i just learnt who the forum geeks are.
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Old 02-01-2010, 03:31 AM   #1537
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Originally Posted by sonaldinho89 View Post
no, the O2/fuel ratio will remain correct, always. the MAF sensor itself measures air MASS. as mass is directly proportional to the Mole of air (and thus Mole of O2) coming into the engine, the O2/fuel ratio will always be correct as the engine has an accurate measurement of air mass.
i.e MAF sensors are always accurate, regardless of air temp.
other cars that use MAP (Manifold absolute pressure) sensors, use the RPM, manifold pressure, and ambient temperature to derive air mass.
the 14.7:1 air/fuel ratio is by mass, not volume
problem is that with hotter air, less air (and thus O2) by MASS, will fit into each cylinder, and this determines how much fuel the DME will inject, and thus combust, each cycle. it's has the same effect as reducing the effective engine capacity.
shuddup and go build some nuclear rockets!
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Old 02-01-2010, 03:34 AM   #1538
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^^ then wrap them in CF!
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Old 02-01-2010, 05:57 AM   #1539
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ahaha i so would! imagine how much cooler NASA would be if the rockets were CF wrapped.
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Old 02-01-2010, 09:59 PM   #1540
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