Revs and engine management - BMW Forum

BigLion · 05-11-2006, 04:02 PM

I've been running my '99 323i SE for round about a week now and I noticed a couple of things: for one it seems to idle slow at about 700revs but needs about 1500rpm to take off. This is not like my old E30 320i which idled a little faster but seemed to have more torque in the very low revs range and never stalled. There are no mods on my E46 as far as I know, so would this be the normal case for an un-chipped 323i? It needs quite a poke on the accelerator to balance the clutch. Frankly I'm not really satisfied with it as I reckon it should pull more at less than 1500rpm.

Also when the revs climb to 4500+ it seems jumpy and it doesn't climb down soon enough. If you're hitting the next gear quickly you shouldn't have to wait for the revs to drop.

How does this compare to your experiences; would this be sortable with a chip?

saltshaker185 · 05-11-2006, 07:45 PM

i think it just sounds like you dont like how the ecu is setup so yeah im pretty sure a chip will satisfy you...

peterkulesza · 05-12-2006, 06:57 AM

it all seems normal. they all come down from revs slowly, this is beacuse of emissions: droppign revs quickly spikes the catalytric converter with a o2 to gas ratio it cannot handle.

i seroiusly doubt any chip will alter this behaviour appreciably. a 330 will