Map 4 data log help

[Sting_em]

Just wondering if someone could read the log and tell how the log looks, see if it's healthy.
Thanks for the help!

 

[Thomby]

You have a bunch of timing corrections (3.8, 4.5, 5.3 in the ign2-6 columns) when at WOT, which would indicate knock / octane limitation. Are you running E30, or just 93?

 

[Sting_em]

E30 mix with 91. Do I need more than E30?

 

[MetalMania80]

E30 is not the same prepared from 91 as from 93.

For this same AKI you need E38-E40.

E30-93= 96,2 AKI
E30-91= 94,7 AKI

https://morepowertuning.com/pages/emix?srsltid=AfmBOorRLd4StG50-7llD_JBHeBHgmEP06FpRWo-Ae8HkbHnMvdDwd0o

 

[Thomby]

How many gallons of E85 per full tank? I usually run 1.25gal per quarter tank (ie 5gal per tank) with 93, but have seen people running anywhere from 4-6. So maybe try increasing by a gallon per tank.

 

[Sting_em]

I test the ethanol content and mix it for e30. We don't have 93 here. Sorry for the long wait. Just got a new jb4 tuner and it bricked. I'm looking at just getting the CPI system. Just need to do more research for the tuning aspect. So closer to e40 for now?

 

[MetalMania80]

Yes. You should be able to run E35-40 without CPI with no problem.

 

[Thomby]

I test the ethanol content and mix it for e30

I've always taken "E30" as a guideline, ie roughly 1/3 "E85" to get your octane in the 95-96 range, plus some extra cooling & oxygen.

If you've tested your local E85 and it's not all over the place (mine is consistently around E80), instead of trying to dial in the exact equivalent from a calculator, you might be better off starting with a modest amount and increasing until you get clean logs (or run out of fuel capacity).

So if your initial calculations had you at 4gal E85 (1gal per quarter tank), bump it up to 5gal E85 (1.25 per quarter tank). If 5 isn't enough, try 6gal (1.5/quarter tank). If that doesn't clean up the timing corrections, go down a map to confirm you're at least running ok there, because once you get to 7+gal/tank you may start running out of fuel pump.

 

[Sting_em]

Thanks for the help. I've been messing with the amount of e85. I do have a test kit. I'm just gonna get the CPI system I think. Then I'll have the e85 content sensor built in with it. And I also use octane booster with every fill up. AMS Oil brand

 

[StingerScott]

Interesting stuff, I’ve also put 5 gallons of E85 into 91 octane. Is it possible to just bump up the octane with some Boostane??

 

[StingerScott]

Here’s my log on map 2 with 5 gallons of E85. Any thoughts?? Thanks

 

[Thomby]

Here’s my log on map 2 with 5 gallons of E85. Any thoughts?? Thanks

You still have constant, significant corrections across all cylinders (ign2-6). Did you ever try different gas and get a clean Map 0? Or send to BMS to see what they think?

You really need to get things running ok in stock form before dialing up the boost.

 

[StingerScott]

I’ll try the jb4 tech forum again. I had a few corrections in map 0 prior to adding the E85 but nothing major. I’ll try the diff gas, thanks Appreciate it.

 

[Thomby]

I’ll try the jb4 tech forum again. I had a few corrections in map 0 prior to adding the E85 but nothing major. I’ll try the diff gas, thanks Appreciate it.

I would still recommend you run through whatever's in your tank, fill up a new tank of premium from a different station/brand than usual, and don't add anything to it for now.

Do your battery disconnect, drive around for a day or two, then try a couple pulls in Map 0. If no significant timing corrections (3 or greater in Ign2-6) and no more weirdness in base timing (Ign1 should be something like 12-14 and increase through the rev range), move up to Map 1 which is designed for 91 octane.

You should be able to use E85 to mimic the 93 octane that Map 2 is designed for, but given your logs, I'd focus on getting things running right on normal gas in lower maps first.

 

[StingerScott]

Ok thank you very much. I will do all of that and share some logs as I’m wanting to get to the drag strip this spring.

If I used E85 after having good logs in map 0 can a person then also use octane booster with E85 to get to E30?

Thanks

Scott

 

[Thomby]

If I used E85 after having good logs in map 0 can a person then also use octane booster with E85 to get to E30?

Pure ethanol is something like 110 octane, with E85 around 105 octane (lower if it's actually "E80" etc).

You can make "E30" with E85 + 93 for an octane around 96, or with E85 + 91 for an octane around 94, but they'll also vary with exactly how much ethanol is in your E85, so one of those little test vials is a good idea to get a feel for E85 in your area.

I wouldn't stack octane boosters on top of an E30 mix...you can move your exact octane around a bit by varying how much E85 (4, 5, 6 gallons per tank are common ratios). But to me that's more for cleaning up corrections on maps that are running pretty healthy but not as clean as you'd like...

I still think you need to go back to Map 0 and fresh pump gas before you try brewing up 110 octane for Map 2.

 

[MetalMania80]

Seeing some minor (<3-3.8) correction is normal, even with WMI. You need reely high octan fuel to have clean logs, 98-100AKI. Real knock is when you see suden drop at Ign1 not related to shifts.

Even stock map0 have some correction, that's how it works.

 

[jdmvette]

Interesting stuff, I’ve also put 5 gallons of E85 into 91 octane. Is it possible to just bump up the octane with some Boostane??

I have a similar question, can a 4oz can of boostane added to a tank of premium be used in lieu of E30?



It is supposed to do +2 to 3 full points added to premium 91/93 (91 depends on altitude)

I am a tuning noob so forgive me if this is common knowledge...thx

 

[Thomby]

can a 4oz can of boostane added to a tank of premium be used in lieu of E30?

I believe the regular / original Boostane needs a quart (32oz) to treat 16 gallons, but those 4oz shots are concentrated and cover the same amount.

You'd bring 93 premium up to 96 octane, about the same as an E30 blend. But you would not have the extra cooling or oxygenation benefits from ethanol. So you'll likely be able to go to a higher map than without it (or clean up corrections on your existing map), but I don't think it's a 1:1 swap.

Meaning, your particular car might run healthy on Map 4 with either, or you might just barely support 4 on E30 and 3 on Boostane. I'd check logs rather than assume it'll run the same.

 

[Plakchup]

If i am not mistaken map 4 is more aggressive than map 3. I know my car runs better on map 3 than map 4 based on the logging I did. I also highly recommend the fuel it kit to see true ethanol content.

When I switched from the usual shell gas station I started doing my e30 mixes I was surprised to see the higher ethanol content when I went to a chevron station. The 4 gallons I mixed with 91 at shell that put me at about e30 ended up giving me a e38 mix at chevron so i had to drive the car for a bit and add more 91 because the car did not like e38. No timing corrections but i was as hitting fuel limit when I did a wot pull on map 4. I am not running cpi. So yeah it can vary depending where you pump from and I think season too. Heck I think each car can be different as well. Some might be ok closer to e38 while some won't.

If I am close to empty I usually know from fuel it app what to put. It's usually 3.6-3.8 e85 and almost 11 gallon 91. I might switch back to the shell station again as it's much closer to me than the chevron one that's like 10-15 min drive. For now I am happy with chevron.

Just wanted to share my experience.