[dreyo27]

I been trying to figure out why I have such massive timing pulls on the factory map!

The car is FBO+

so far the only things that effect it is
1) e16 mixture (according to ethanol sensor) causes timing to straiten out.
2) Pull on a cold engine 120 oil temps and timing is perfect.

Car has new plugs, coils, injectors, plugged head ports and walnut blasted.

http://datazap.me/u/dreyo27/stock-1?...7-8-9-10-11-22

2 logs her

Any advice is appreciated.

[titium]

The dme takes a while to adapt (probably 200km or so). I believe the recommended oct rating is 93/98 ron.

if you're going straight from e16 to 91 it would have adapted for the e16 and may take a while to adapt back down.

e16 probably brings the octane rating above 93/98 hence the reduced timing corrections

[Brule]

Stock map has corrections normally.

[Brule]

That's fairly crazy though.

What's going on there?

Checked your life and noticed you are fbo.

Even if you had 110 octane there should not have a change in corrections because of better fuel if your stock.

If you are fbo having extra flow the stock tune is not suitable no matter what fuel you put in it, that's why you have corrections.

[YouAreMyWorld]

1) You shouldn't be going WOT from 2,000rpms. Always 2,500rpms.
2) Our California gas is atrocious, thus we will pretty much always get timing corrections unless you mix in E85 to compensate. And even then there will generally be some.
3) Those aren't particularly "huge" timing corrections; timing corrections are almost always present--so if you're worried something is wrong, the data in the logs are negligible.
4) Pay attention to the numbers and try not to look at the log's data and the way it's visually represented as worse than it actually is.
5) Unless you're getting 6+ degrees of corrections across all cylinders, what's presented here is fairly normal.

[dreyo27]

Originally Posted by titium

The dme takes a while to adapt (probably 200km or so). I believe the recommended oct rating is 93/98 ron.

if you're going straight from e16 to 91 it would have adapted for the e16 and may take a while to adapt back down.

e16 probably brings the octane rating above 93/98 hence the reduced timing corrections

I reset the octane rating in mhd and drove 100 miles

[dreyo27]

Originally Posted by YouAreMyWorld

1) You shouldn't be going WOT from 2,000rpms. Always 2,500rpms.
2) Our California gas is atrocious, thus we will pretty much always get timing corrections unless you mix in E85 to compensate. And even then there will generally be some.
3) Those aren't particularly "huge" timing corrections; timing corrections are almost always present--so if you're worried something is wrong, the data in the logs are negligible.
4) Pay attention to the numbers and try not to look at the log's data and the way it's visually represented as worse than it actually is.
5) Unless you're getting 6+ degrees of corrections across all cylinders, what's presented here is fairly normal.

Thanks for your great advice.

[Jeff@TopGearSolutions]

How many times have you done this particular log where you go WOT? I try to do the same type of log 3x. By the 3rd time the car usually adapts pretty well on the ignition side to give you a fair reading on how it's taking it. Corrections are normal but they should adapt to the point of only being a few here and there, with regards to pump gas. Stock cars do have timing corrections, all the time. The whole mentality of having 0 corrections is a little too unrealistic on pump gas, especially with the sensitivity of newer cars.

[Chris@VargasTurboTech]

ACN91 is awful fuel. Really need a protune to make the car clean with that lousy lousy fuel. BuraQ did the ACN91 tune on my personal car and it runs like a top. I told him I didn't care about max power -just wanted it clean in case I ran out of ethanol. The stock tune and the OTS tunes all ran terribly with uninspiring logs.

Chris