[markoz28]

Originally Posted by mhbg82

Sameh is the tuner

The guy from Dubai? If so, I hear great thing and whatever he tells you I would listen.

[mhbg82]

Originally Posted by markoz28

The guy from Dubai? If so, I hear great thing and whatever he tells you I would listen.

Yup that’s him. He’s a great tuner. I’m positive it’s the winter blend that’s holding me back. I’ll wait til the summer blend and see if anything changes.

[hellcat2m4]

Those 60-130 times are solid for 93 regardless so I wouldn't worry too much.

The OTS E30 gave me the same 60-130 times in 1700 DA for reference, so it seems like you are good TBH.

[SwankPeRFection]

Originally Posted by hellcat2m4

The OTS E30 gave me the same 60-130 times in 1700 DA for reference, so it seems like you are good TBH.

Yes and no. OTS maps are inherently (or should be) built with a bit of headroom for safety. Custom tunes tend to be on the edge or just slightly dialed back from that, so if a more aggressive timing maps is used and gets you the same results, it’s not always a good thing. Why be more on the ragged edge and still get the same results. I don’t know what the logs looks like on this tune, but if it’s pulling more timing than an OTS and not making any more, it’s not making any more power because of all that pull. It’s not good thing to ride the safeties of an engine constantly… but I’m not saying that’s what’s happening here.

[mhbg82]

Originally Posted by SwankPeRFection

Yes and no. OTS maps are inherently (or should be) built with a bit of headroom for safety. Custom tunes tend to be on the edge or just slightly dialed back from that, so if a more aggressive timing maps is used and gets you the same results, it’s not always a good thing. Why be more on the ragged edge and still get the same results. I don’t know what the logs looks like on this tune, but if it’s pulling more timing than an OTS and not making any more, it’s not making any more power because of all that pull. It’s not good thing to ride the safeties of an engine constantly… but I’m not saying that’s what’s happening here.

The custom tune log is a ton better than the ots 93. A ton of timing was getting pulled on the ots map. Zero knocks but crazy amounts of timing was pulled like sometimes showing -10 degrees on one pull. The custom map is at max maybe -1.5 to -2.0 total timing corrected during a WOT 4th gear log.

[SwankPeRFection]

Where do you buy your gas to have that much timing pulled?

[mhbg82]

Before I used to swap between Citgo or Shell every now and then. Now I’ve changed to a new Meijer gas station built near me. I haven’t touched the ots map since switching to this new station.

[SwankPeRFection]

Never heard of it. Shell and Chevron user myself.

[mhbg82]

Midwest supermarket chain. They have Top Tier detergent gas. Station is maybe a year or so old. My friend who runs E85 in his GT500 from this station has tested it at around the 80%~ mark consistently.

[SwankPeRFection]

I figured it’s another part of the country. Just be aware that the whole “Top Tier” moniker is used very loosely in the gas industry to mean as you indicated, “detergent/cleaning agents and additives” in the gas they sell. It doesn’t mean shit in terms of octane quality or refinement. Also, the E85 pump having close to good quality in that gas doesn’t mean their 93 is good quality 93. Just be mindful of that. A new gas station, while having new and clean tanks, doesn’t mean they won’t get cheap gas to be able to recoup their buildout costs, etc. I’ve seen it happen and I’ve also seen old stations that have been there a while have better gas than new one, so it’s not always a good basis for judging expected gas quality.

[mhbg82]

Right. I was going off of what I’m seeing in terms of timing corrections. This station seems to have the “best” so far. -1.5 to -2.0 timing correction seems indicative of decent gas.