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Aileron76 Aileron76 is offline
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Default 07-28-2020, 09:17 PM

Map 6 with and without meth with 75 meth add look almost identical to me
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File Type: csv P50_M6_R1_200728_203016.csv (11.8 KB, 10 views)
File Type: csv P50_M6_R1_200728_202746.csv (6.8 KB, 8 views)


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Default 07-29-2020, 04:27 AM

You may not directly see the benefit of the meth in the logs because:
A) we don't have the ability to truly monitor knock.
B) we don't have the ability to monitor charge air temperatures. Even if we could it depends on where you inject.
C) you may have enough octane for a map 6 no meth for a couple gear pull, etc. But when really pushing the car or running 1/4 mile or high speed rolls, having the WMI could be the difference between detonation and fun


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Aileron76 Aileron76 is offline
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Default 07-29-2020, 05:19 AM

Ah makes sense.

Yea i just thought there would be timing advance similar to using e85 or something which gets a nice bump in power


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Default 07-29-2020, 06:13 AM

Quote:
Originally Posted by Aileron76
Ah makes sense.

Yea i just thought there would be timing advance similar to using e85 or something which gets a nice bump in power
Even with E85, if you're on a stock tune, the car will command the same timing for a given boost regardless of octane assuming no knock.


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Default 07-29-2020, 04:40 PM

With a E30ish Fuel Blend - but before I upgraded my fuel pumps - I was maxing out my fuel trims. By moving to BM7s and even to PM8s I was able to get some fuel trim relief. After my injector failures and fuel pump upgrades - fuel trims are not an issue and I went back to the BM5s.


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Default 07-29-2020, 04:44 PM

Quote:
Originally Posted by Aileron76
Map 6 with and without meth with 75 meth add look almost identical to me
0-60mph runs are not really enough to look at data like this. Need to get up to higher speeds IMHO.


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Aileron76 Aileron76 is offline
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Default 07-29-2020, 09:23 PM

Quote:
Originally Posted by jrobohm
With a E30ish Fuel Blend - but before I upgraded my fuel pumps - I was maxing out my fuel trims. By moving to BM7s and even to PM8s I was able to get some fuel trim relief. After my injector failures and fuel pump upgrades - fuel trims are not an issue and I went back to the BM5s.
Ah makes sense. What # should i look for to know whether the trims are maxed?

Heres a few runs, unfo only 0-60s for now.

203105 was map 6 w meth map 1 at 75 add
204209 and 204329 are same but 80 meth add

Weird thing is the 80s two runs both have trims stuck at 25, whereas the 75 has a more normal looking variable trim. Any idea whats up with that?

Also, do the 80 maps look ok? Do u think i can safely try meth add 85?
Attached Files
File Type: csv P50_M6_R1_200728_203105.csv (9.2 KB, 8 views)
File Type: csv P50_M6_R1_200729_204329.csv (8.3 KB, 7 views)
File Type: csv P50_M6_R1_200729_204209.csv (7.6 KB, 5 views)


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Default 07-30-2020, 06:10 AM

It looks like all three logs are Map 6

As I remember, when you see Trims at 44 - that's maxed out.

Also, keep an eye on Ign_1 numbers - except for gear shifting, it is not a good sign when your numbers suddenly drop to 0 and then pick back up with a constant pedal / RPM increase. That is indicative of knock being detected and the ECM pulling timing. This would suggest too much boost for the fuel's effective octane.

The best logs to get are 3rd to 4th gear WOT pulls (say getting onto a highway for example.)


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Aileron76 Aileron76 is offline
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Default 07-30-2020, 08:50 AM

Ok ill look out for that. The ign1 looked fine to me on these runs.

And yes they were all map 6, but with difft meth add #s, i.e. 75 then 80.

I will see about doing a few runs on a highway to check them before trying meth add 85.

Thanks for all the feedback so far everyone


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Aileron76 Aileron76 is offline
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Default 07-31-2020, 07:01 AM

Heres a longer run map 6 w meth add 80. Seems like my truns are maxing, but ign1 seems fine
Attached Files
File Type: csv P50_M6_R1_200730_211648.csv (11.4 KB, 9 views)


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Default 07-31-2020, 07:50 AM

Are you using Boost Juice or something else? Your AFR numbers are in the low-mid 12's here and there - getting a bit lean. Boost Juice is a 49 Meth / 51 water mix. It might be interesting to see what a bit more WM volume would do to your AFR numbers - say moving up to the BM7 nozzles. Otherwise how does it feel?


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ddnspider ddnspider is offline
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Default 07-31-2020, 07:58 AM

I think the log looks good. AFR's richen up in 3rd and look ok in 4th. Depending on where you live you might be able to add another couple psi, but the log looks really good to me.


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Aileron76 Aileron76 is offline
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Default 07-31-2020, 02:06 PM

Sweet, thx Ddn. Map 6 w meth is starting to feel like my map 6 without meth since ive increased meth add to 85, but no logs yet.

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Last edited by Aileron76; 07-31-2020 at 10:49 PM..
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Default 08-01-2020, 08:28 PM

Quote:
Originally Posted by Aileron76
How high did you end up going in the bm5s?
Before my fuel system upgrade I was maxing out my trims with a Meth Add at 75 (I was also running back then a E30ish fuel blend.) I upgraded my nozzles all the way to ProMeth (PM8s) and trims were still at or just below maxed out when running a E blend fuel. Hence I upgraded my LPFP and got some relief. When I upgraded my HPFP, I lost my injectors - may or may not have been related to the HPFP and/or the fact I had been running E fuel blends?!?) Post my EcuTek tune - I do not see fuel trims much above 30.


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Aileron76 Aileron76 is offline
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Default 08-02-2020, 10:41 AM

Hm interesting, how does the car feel since the ecutek tune? Also, whats your meth add now with the tune, or do you only use it as extra insurance?

Heres 2 logs on map 6 meth add 85, looks ok to me, but i await the opinion of the experts
Attached Files
File Type: csv P50_M6_R1_200802_124852.csv (10.1 KB, 5 views)
File Type: csv P50_M6_R1_200802_125259.csv (13.5 KB, 4 views)


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Default 08-03-2020, 07:24 PM

Upgrading the HPFP is what pushed the have to button on the EcuTek tune. The stock tune doesnt play well with the upgrade - stock injectors as well?!?

Car drove good before and a bit better with the tune. As the tune covers everything but WMI control - thats why I have the JB4 still in place. I also like the JB4 logging over ECU Connect - personal preference. I run a Map 0 or a flat boot Map 6 with no Meth Add set. The additional IAT reduction, cleaning effect, and the added effective octane effect of the WM cant be beat and its not going anywhere!


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