Evolve tune

[Evolve Automotive]

Originally Posted by Pig Farmer

Didn't get it. Can you resend. Thanks.

resent

[Long_Wang]

Ok so I've been running this tune on my car. Have had some CEL issues (says o2 sensors are stuck rich but have been replaced) as well as car almost stalling out when cold.

I am running 2nd cats (as this is how the car was sold to me last year).

Could the secondary cats be roasted and clogged and the cause of these errors and running poor - as well as reduced exhaust volume?

[opihi5]

Originally Posted by Long_Wang

Ok so I've been running this tune on my car. Have had some CEL issues (says o2 sensors are stuck rich but have been replaced) as well as car almost stalling out when cold.

I am running 2nd cats (as this is how the car was sold to me last year).

Could the secondary cats be roasted and clogged and the cause of these errors and running poor - as well as reduced exhaust volume?

Idling problems are common on m3's and it is probably your idle control valve, I asked evolve for a cold start delete after having idling problems and they went away. If you are primary catless you need the stage 2 tune.

[Long_Wang]

Originally Posted by opihi5

Idling problems are common on m3's and it is probably your idle control valve, I asked evolve for a cold start delete after having idling problems and they went away. If you are primary catless you need the stage 2 tune.

Yeah I believe that's what is on the car as it was catless and set up properly when I got it. I just think the time of driving it when the PO had it and the time I've had it might have toasted the secondary cats?

The idling isn't an I doling issue, it's an issue when I come off the throttle to a stop. It will dip down to like 200, almost stall then pop back up to 1200 with a self induced rev and then level back out.

The throttle is also a bit sluggish overall and more so when getting going in the morning after sitting all night.

[opihi5]

Originally Posted by Long_Wang

Yeah I believe that's what is on the car as it was catless and set up properly when I got it. I just think the time of driving it when the PO had it and the time I've had it might have toasted the secondary cats?

The idling isn't an I doling issue, it's an issue when I come off the throttle to a stop. It will dip down to like 200, almost stall then pop back up to 1200 with a self induced rev and then level back out.

The throttle is also a bit sluggish overall and more so when getting going in the morning after sitting all night.

Did you recently replace the o2 sensors, the secondary cats should not have toasted out. First things first is to change the gas station you go to.

[Long_Wang]

Originally Posted by opihi5

Did you recently replace the o2 sensors, the secondary cats should not have toasted out. First things first is to change the gas station you go to.

O2s were changed right away. I go to shell exclusively so I suppose maybe that could be the issue but for 7-8 months (progressively gotten worse and more common). Tried some fuel treatment a while ago also, didn't help much.

Finding the cause of the CEL saying I'm running rich seems to be the key to unlocking this puzzle.

[opihi5]

Originally Posted by Long_Wang

O2s were changed right away. I go to shell exclusively so I suppose maybe that could be the issue but for 7-8 months (progressively gotten worse and more common). Tried some fuel treatment a while ago also, didn't help much.

Finding the cause of the CEL saying I'm running rich seems to be the key to unlocking this puzzle.

If your running rich it could be a problem with the tune.

[Long_Wang]

Originally Posted by opihi5

If your running rich it could be a problem with the tune.

Yeah I'll get in touch with Evolve bout that.


Just had my secondary cats cut out and they were clean. DOH. Guess back to square one.

[Richbot]

Would look at fuel pressure sensor and thermostat temp sender, post all your codes? Evap canister?

Does not sound tune related to me. The tune is not going to suddenly go bad

Running rich enough for long enough will eventually ruin cats but sounds like you know that already

[Long_Wang]

Originally Posted by Richbot

Would look at fuel pressure sensor and thermostat temp sender, post all your codes? Evap canister?

Does not sound tune related to me. The tune is not going to suddenly go bad

Running rich enough for long enough will eventually ruin cats but sounds like you know that already

Cut them out yesterday and they looked fine.

[Long_Wang]

The only codes I throw regularly are this one

[Long_Wang]

Have also thrown these but only once or twice in the 8 months this has happened.

[opihi5]

Originally Posted by Long_Wang

The only codes I throw regularly are this one

Try starting a thread for this, since it's not relate to evolve tune lol

[Long_Wang]

Originally Posted by opihi5

Try starting a thread for this, since it's not relate to evolve tune lol

Yeah sorry. Thought it was a tuning issue at first.

Thanks for the help guys.

[Long_Wang]

Originally Posted by opihi5

Try starting a thread for this, since it's not relate to evolve tune lol

Yeah sorry. Thought it was a tuning issue at first.

Thanks for the help guys.

[Evolve Automotive]

send me a pm and we can get this sorted for you.

[Long_Wang]

I will if we think it's tune related.

Thanks