Running Rich

[aaronng]

the tune on a stock car and a good aftermarket tune are two very different things. If you've ever seen a stock datalog you'd know just how stupidly rich the stock tune can be. That is because its a generic tune for a variety of drivers, fuel quality and engines (stock engines will vary from the factory)

A good tune wont be so rich that you blow black smoke. Especially on an NA street car, they simply dont need to be run that rich. Even for 'safety'.

BTW the suggestion about checking the PCV is also a good one.

I reckon he should get his car retuned, with a dyno test before so we can find out the A/F ratio.

[shebangs]

Tune sounds the go, but what other things COULD it be? What sensors should I look at? PCV? O²?

I might hold off and do my cam's at the same time as the next tune, I can't see the point in retuning without any changes. If the answer is truly 'for a safe tune' thats perfectly fine for me, I love my car so I don't mind, specially with it being a daily.

Matt

[aaronng]

Well, check the O2 sensor.

[aaronng]

O2 will only have an effect in closed loop (ie part throttle), and should throw a code. So i doubt thats your problem

Accord Euros with O2 sensor failures don't throw a code for some reason.

[ACTI0NMAN-1]

is your intake just the piping or did you change the intake manifold too?

[iced]

oil temp takes 15min give or take 5 at least normal driving to normal temp depending on weather and driving style too.
water takes 3-5min

[shebangs]

is your intake just the piping or did you change the intake manifold too?

Manifold is stock, but I'm currently looking for Skunk2 IM. Piping is Injen 1450.

[shebangs]

I have my dyno printout, will that give us any more info? I'll scan it tonight and post it up.

[aaronng]

I have my dyno printout, will that give us any more info? I'll scan it tonight and post it up.

If it shows A/F ratios, then yes.