Smoke from Exhaust

[Calvo]

i got a new cannon muffler a mnth ago, and wen my friend follow me, they say sometimes some smoke comes outta my exhaust. is this normal? is it just the vtec?
if i sit still and rev the car, sometimes u can see carbon deposits left on the floor.
is this bad?
PLZ HELP!!
cheers.
EDIT: i drive a 94 accord vti-s

[wynode]

What colour is the smoke?

Roughly.

Blue = Burning oil
Black = Too rich.
Grey/white = Water/coolant

Black smoke isn't a bad thing..... so which is it?

[Calvo]

its black smoke.

so its not bad?
EDIT: yeh i was told it would run heaps rich. so is that ok?

[wynode]

Some black smoke is OK.

[Calvo]

ok k, cool.
thanks wy

[poid]

Black smoke is prolly cos of the pod i reckon

[Weq]

When i had the civic ont he dyno, my A/F was perfect. Honda ecu's are usually good at compensating. Maybe ur 02 sensoris playing up? i really doubt a pod will effect a/f.

[Jnr Teggy]

When i had the civic ont he dyno, my A/F was perfect. Honda ecu's are usually good at compensating. Maybe ur 02 sensoris playing up? i really doubt a pod will effect a/f.

you would be surprised!...when i got my exhaust a pod installed it completely threw out the mixtures!

[online]

Turbo stuff will always run a little rich but std NA Honda stuff will always run spot on, you must have a little prob somewhere.

[Jnr Teggy]

Turbo stuff will always run a little rich but std NA Honda stuff will always run spot on, you must have a little prob somewhere.

you will actually find that most vtec hondas run very very rich in the top end to promote in cylinder cooling and lubrication...also a safety mechanism against lean outs!

[wynode]

If you are running a MAP sensor then everything should be OK. If its an AFM then that might be your problem.

Otherwise check your ECU for error codes.

[online]

thats all good, but not even a microtech with a NA Honda puffs black smoke when we dyno it.