[zutal]

stage 2 91 octane map..... im getting some low ignition on cylinder 1 ??? octane related?

http://bootmod3.net/log?id=5e3eef3dd10b43292c8a4f7f

[kern417]

Originally Posted by InstigatorX

First MHD stage 1 logs...

https://datazap.me/u/instigatorx/log-1581110609
https://datazap.me/u/instigatorx/log-1581110769
https://datazap.me/u/instigatorx/log-1581112253

100% 93 octane (not E10).

Doesn't feel that strong and my amateur eyes tell me timing is out of whack. Octane problem?

Try gapping your plugs. Also why no E10? Adding E85 should help too.

Originally Posted by zutal

stage 2 91 octane map..... im getting some low ignition on cylinder 1 ??? octane related?

http://bootmod3.net/log?id=5e3eef3dd10b43292c8a4f7f

A lot of people have had low cyl1 timing. have you gapped your plugs?

your timing looks really low in general, but that may be a part of tuning for 91 octane.

[InstigatorX]

Originally Posted by kern417

Try gapping your plugs. Also why no E10? Adding E85 should help too.

I'm gapped to 0.025 currently. Should I go 0.022?

As for pure 93, was trying to see if quality was high. Don't think the 93/E10 in my area is good quality.

[Supr3me]

Originally Posted by kern417

Try gapping your plugs. Also why no E10?

I think what he meant is that it's 'real 93', not 89 with ethanol added. I've also heard that 'real 93' is better than E10 93, but I don't know that conclusively.

[kern417]

Originally Posted by InstigatorX

I'm gapped to 0.025 currently. Should I go 0.022?

As for pure 93, was trying to see if quality was high. Don't think the 93/E10 in my area is good quality.

yes

most 93 is an e10ish mix. you'd have to find specific stations that sell ethanol-free fuel. i'd try a regular station if you havent already.

for me i started seeing timing corrections after one of the bm3 updates. tried multiple stations and it didn't fix it. it wasn't until i gapped my stock plugs down to 0.022 that it got better.

Originally Posted by Sµpreme

I think what he meant is that it's 'real 93', not 89 with ethanol added. I've also heard that 'real 93' is better than E10 93, but I don't know that conclusively.

for efficiency but not for power.

[OzBMR]

Originally Posted by InstigatorX

Thx for taking a look.

- Road was fairly dry. Rained earlier, but was long straight stretch of road and I turned DSC off (long press). Temp was around 50*.

- plugs are less than 2k old and gapped to 0.025. Should I go the whole 0.022 like everyone's been talking about?

- car was flashed same day and I reset adaptations before the first log.

50 F is pretty cold for summer tires and unless completely dry road any wheel slip may affect timing even with DSC off. 3rd gear runs more so.

0.025 is good and plugs are nice and fresh.

I'd stick with with map for a while and see how it goes, do some more 4th gear logs when it's a bit warmer and dry.

This is an 8 speed auto? Do you have XHP flashed?

[InstigatorX]

Originally Posted by OzBMR

50 F is pretty cold for summer tires and unless completely dry road any wheel slip may affect timing even with DSC off. 3rd gear runs more so.

0.025 is good and plugs are nice and fresh.

I'd stick with with map for a while and see how it goes, do some more 4th gear logs when it's a bit warmer and dry.

This is an 8 speed auto? Do you have XHP flashed?

Thx. Much appreciated for the analysis. Yes, 8AT and have st2 xHP loaded.

Did a few more logs...

https://datazap.me/u/instigatorx/log-1581271227
https://datazap.me/u/instigatorx/log-1581201283
https://datazap.me/u/instigatorx/log-1581201256
https://datazap.me/u/instigatorx/log-1581201233

First log above I added 1.2gal of E85 (tests at E75) to full tank of 100% 93. The last 3 were 100% 93.

Does torque seem low? Thought mhd spec'd 580nm.

[OzBMR]

Originally Posted by InstigatorX

Thx. Much appreciated for the analysis. Yes, 8AT and have st2 xHP loaded.

Did a few more logs...

https://datazap.me/u/instigatorx/log-1581271227
https://datazap.me/u/instigatorx/log-1581201283
https://datazap.me/u/instigatorx/log-1581201256
https://datazap.me/u/instigatorx/log-1581201233

First log above I added 1.2gal of E85 (tests at E75) to full tank of 100% 93. The last 3 were 100% 93.

Does torque seem low? Thought mhd spec'd 580nm.

1.2 gallons of E75 to full tank would give you E6, not much of an octane boost, but in that run your delta for knock ended at zero which is good.

In all of your runs you're getting pretty good timing for that fuel 12 - 14 degrees at 16 PSI around 6500 RPM

The quoted 420hp/580Nm is for the Stage 1 95 octane/102 RON map which runs more boost and timing.

To test E85 properly add 4.4 gallons (17 liters) of E85 and then fill the tank with 93. This will give you E25 - E30. Retest your Stage 1 93 octane map and if timing and corrections look good you could flash the Stage 1 95_102 map, or if you have Stage 2 map pack flash the Stage 2 93 or even the 95_102 map.

[InstigatorX]

Originally Posted by OzBMR

1.2 gallons of E75 to full tank would give you E6, not much of an octane boost, but in that run your delta for knock ended at zero which is good.

In all of your runs you're getting pretty good timing for that fuel 12 - 14 degrees at 16 PSI around 6500 RPM

The quoted 420hp/580Nm is for the Stage 1 95 octane/102 RON map which runs more boost and timing.

To test E85 properly add 4.4 gallons (17 liters) of E85 and then fill the tank with 93. This will give you E25 - E30. Retest your Stage 1 93 octane map and if timing and corrections look good you could flash the Stage 1 95_102 map, or if you have Stage 2 map pack flash the Stage 2 93 or even the 95_102 map.

Will do.

Couple questions...

1. Those timing corrections are ok and nothing to worry about in meantime?
2. How do u interpret the delta for knock parameter? Haven't found anything on google that explains.

Thx for all the advice. Unfortunately on way to London for 2 weeks and won't be able to test until I get back. 😩😥

[SC_B5X]

Anyone want to take a guess at what the fuck is wrong with my car? For the last night or two it's been super cold (noticed it only does this when it's near freezing temps out) and has been misfiring randomly under WOT, usually when I go to overtake someone on the highway. Logs show the rail pressure is crashing extremely hard, which is weird considering 99% of the time rail pressure is always on target. I also get the code for Mixture Control Too Rich, but my AFR's are on target in the mid 12's. (Ignore the exhaust flap code, it completely fucked the exhaust in the open position when the car shot a flame).

Could it possibly be 02 sensors causing this?

Mods: VRSF 4.5" Downpipe, Remus Axleback, Dorch Engineering Stage 1 HPFP, Pure800 Turbo, E40 Tune, AFE Drop in Filter, Williams Performance Intake Pipe

Log:
https://datazap.me/u/richmichael97/m...56-57-58-59-60

[OzBMR]

Originally Posted by SC_B5X

Anyone want to take a guess at what the fuck is wrong with my car? For the last night or two it's been super cold (noticed it only does this when it's near freezing temps out) and has been misfiring randomly under WOT, usually when I go to overtake someone on the highway. Logs show the rail pressure is crashing extremely hard, which is weird considering 99% of the time rail pressure is always on target. I also get the code for Mixture Control Too Rich, but my AFR's are on target in the mid 12's. (Ignore the exhaust flap code, it completely fucked the exhaust in the open position when the car shot a flame).

Could it possibly be 02 sensors causing this?

Mods: VRSF 4.5" Downpipe, Remus Axleback, Dorch Engineering Stage 1 HPFP, Pure800 Turbo, E40 Tune, AFE Drop in Filter, Williams Performance Intake Pipe

Log:
https://datazap.me/u/richmichael97/m...56-57-58-59-60

Nothing obvious in the log, may be something of use here, O2 sensors may have been involved?

https://www.bimmerfest.com/forums/sh....php?t=1279872

[SC_B5X]

Originally Posted by OzBMR

Nothing obvious in the log, may be something of use here, O2 sensors may have been involved?

https://www.bimmerfest.com/forums/sh....php?t=1279872

I actually think I just found the issue. We're at the fuel pumps limit right now so we stopped revisions until my Dorch Stage 2 comes in, rail pressure was dipping to 2400psi and that was when it was 50-70F outside. Tonight it dropped down to 31-34F. I just did some normal logs and the rail pressure is dipping hard (1800-2000). I'm guessing the dense cold air is too much for the HPFP to keep up with if I had to guess. I looked at the "maf g/s" on a log from when it was warm and a log now and it's taking in a ton more air.

[Supr3me]

Originally Posted by SC_B5X

I actually think I just found the issue. We're at the fuel pumps limit right now so we stopped revisions until my Dorch Stage 2 comes in

Did they tell you 4 week lead time when you ordered? How long ago was that?

[alyabiev]

Originally Posted by SC_B5X

I actually think I just found the issue. We're at the fuel pumps limit right now so we stopped revisions until my Dorch Stage 2 comes in, rail pressure was dipping to 2400psi and that was when it was 50-70F outside. Tonight it dropped down to 31-34F. I just did some normal logs and the rail pressure is dipping hard (1800-2000). I'm guessing the dense cold air is too much for the HPFP to keep up with if I had to guess. I looked at the "maf g/s" on a log from when it was warm and a log now and it's taking in a ton more air.

You actual load is pegged at the limit in that log with HPFP pressure dip. Looks like load targeting logic was dumped in favor of simply following the boost limit table, because in your other logs boost remains the same no matter what IATs are and load is not consistent - it is low when IATs are high and high when IATs are low.

[OzBMR]

Originally Posted by InstigatorX

Will do.

Couple questions...

1. Those timing corrections are ok and nothing to worry about in meantime?
2. How do u interpret the delta for knock parameter? Haven't found anything on google that explains.

Thx for all the advice. Unfortunately on way to London for 2 weeks and won't be able to test until I get back. 😩😥

1. I wouldn't worry about it. Stock cars will be doing this with their lean AFR's and variable quality fuel, just no one looks at the datalogs for those. The DME is adjusting to keep the engine safe.
2. Delta for knock, I have no document to point to, only observations from looking at a range of data logs. When there are zero timing corrections and nice even timing across all cylinders the delta for knock stays at zero. If you have poor timing and lots of corrections the delta for knock will go to negative values and I expect the DME will use this to reduce timing in the tables.

[alyabiev]

Originally Posted by OzBMR

1. I wouldn't worry about it. Stock cars will be doing this with their lean AFR's and variable quality fuel, just no one looks at the datalogs for those. The DME is adjusting to keep the engine safe.
2. Delta for knock, I have no document to point to, only observations from looking at a range of data logs. When there are zero timing corrections and nice even timing across all cylinders the delta for knock stays at zero. If you have poor timing and lots of corrections the delta for knock will go to negative values and I expect the DME will use this to reduce timing in the tables.

Delta for knock shows how many degrees of timing advance is pulled after the knock event was detected.

[SC_B5X]

Log of the race where I gapped the Hellcat that was talking shit. Seems like it has some knock. Guess I need a bit more octane.

Also noticed boost is falling off toward redline for some reason, Steven is fixing it in the next revision.

https://datazap.me/u/richmichael97/w...64&zoom=38-159

[OzBMR]

Originally Posted by SC_B5X

Log of the race where I gapped the Hellcat that was talking shit. Seems like it has some knock. Guess I need a bit more octane.

Also noticed boost is falling off toward redline for some reason, Steven is fixing it in the next revision.

https://datazap.me/u/richmichael97/w...64&zoom=38-159

Peter from Pure I think also mentioned a limit that is still unresolved in the DME over 6000 RPM. In a lot of the logs it seems at about 6400 - 6500 RPM Load Actual tapers off no matter what Load Required is.

In this tune it seems like Load Actual is capped at 191.2 until 6400 RPM then starts dropping. Change gears at 6400 RPM, or you can set the max RPM lower in XHP?

In 5th and 6th gear it's weird, boost at the TMAP in the charge pipe continues to climb up to 26.3 PSI in 5th and 27 PSI in 6th but manifold pressure remains capped at 22.9 PSI. It's when this starts to happen that timing starts to drop.

[SC_B5X]

Originally Posted by OzBMR

Peter from Pure I think also mentioned a limit that is still unresolved in the DME over 6000 RPM. In a lot of the logs it seems at about 6400 - 6500 RPM Load Actual tapers off no matter what Load Required is.

In this tune it seems like Load Actual is capped at 191.2 until 6400 RPM then starts dropping. Change gears at 6400 RPM, or you can set the max RPM lower in XHP?

In 5th and 6th gear it's weird, boost at the TMAP in the charge pipe continues to climb up to 26.3 PSI in 5th and 27 PSI in 6th but manifold pressure remains capped at 22.9 PSI. It's when this starts to happen that timing starts to drop.

Interesting. Hopefully we can figure out what the limiter is so we can work past it.

[Supr3me]

New logs for Wedge E50 Rev 3. I was gone for a trip and I don't know if it's the new file or just being away from the car and driving a rental but it feels very fast again lol

https://datazap.me/u/tnilson/rev-3-3...og=0&data=4-18

https://datazap.me/u/tnilson/rev-3-4...og=0&data=4-18

Both entries have 2 pulls logged.

Oz- can you do your virtual dyno magic?

[kern417]

Originally Posted by Sµpreme

New logs for Wedge E50 Rev 3. I was gone for a trip and I don't know if it's the new file or just being away from the car and driving a rental but it feels very fast again lol

https://datazap.me/u/tnilson/rev-3-3...og=0&data=4-18

https://datazap.me/u/tnilson/rev-3-4...og=0&data=4-18

Both entries have 2 pulls logged.

Oz- can you do your virtual dyno magic?

Those numbers are amazing. I know it's really arbitrary but my goal is 20psi and 20* of timing

Great boost control too. Forget the virtual dyno, go get on some rollers.

[Supr3me]

Originally Posted by kern417

Those numbers are amazing. I know it's really arbitrary but my goal is 20psi and 20* of timing

Great boost control too. Forget the virtual dyno, go get on some rollers.

Ya the boost and target line is deadlocked together. Really nice. If you compare to some of the initial rev, he's really gotten that timing number up.

And the rail pressure is like a laser level on E50. For anyone who wants to see the difference from the Supra pump in action, here's the stock pump trying to run E30:

https://datazap.me/u/tnilson/old-log...og=0&data=7-15

I think I will get a dyno date scheduled...