[NoQuarter]

My first log with new installation of PWM meth on rev 2.5 Procede.
3rd gear run at 72deg F.

I didn't expect to see IAT go up but all the posted logs over the summer were in hot temps. My temps were a reasonable 72deg and IAT was at 84deg before the run so I guess the temps would go up just not as much as without meth?

[themyst]

timing looks good, but IATs should not be going up like that. Can you prime and test your kit?

What kind of mixture are you spraying? 50/50?

[Clap135]

I am starting to not believe these datalogs, especially the IATS. Based on your timing the meth is flowing, very good timing. Based on your IATS your meth isn't spraying.

[plague]

are the nozzles to small on the pwm???

[themyst]

those things are dual 1mms. Should be plenty of flow if necessary.

[NoQuarter]

50/50 mix by weight. I'm sure I am getting meth flow. I dyed it pink so I can see it in the lines and can tell the volume in the tank is getting lower.

93octane, DCI.

I can try a flow test to make sure I am getting the correct volume.

[Ilma]

That's really weird!

Those logs look great and Clap is right.....it does not make sense that your intake temps rise like that......yet timing is up around 10 degrees.


I just installed the PWM kit last weekend and here is a log I ran today.

Very similar to yours, except my IAT drops from 35C at the start of my pull down to 24C by 4th gear. Thats 95F to 75F and ambients were 72F at the time.....so a 20 degree drop.

I am running about 80-20 meth to water.

You might try running higher a concentration of meth and see what happens.

[NoQuarter]

Here is the run just before the one I posted above. Here we can see the temp starts to go down after the meth comes on but then rises again.

I am running a dual cone intake with no snorkel. Could the under hood temps be affecting this this much? I also added the oil temp to this plot. of course the oil temp should go up but it suspeciously correlates with the intake temp.

[Clap135]

Your timing is horrible on that log post shift, but yet it shows meth is flowing. If you have 0 IC, you are running way to aggressive. Thi slog is the main reason why I tell people to log multiple gears. This one gear wonder is nothing but bullshit for glory dyno numbers.

[NoQuarter]

Clap... what you are saying about the timing is that it is down a couple degrees compared to the previous gear?

I'll try another couple more logs.

This car has a power steering cooler, transmission cooler (6AT), and an oil cooler most of which is in front of the radiator. I wonder if the temp rising is as simple as that.

Might have to see what to do about the intake air. I can't run my stock snorkel beacuse of the way I have to fit the charge pipe.

[NoQuarter]

A pic of my install

[caliguy562]

And I thought the 335i was limited in space on the driver's side. Getting that charge pipe in place must have been a bitch.

[themyst]

Originally Posted by Clap135

Your timing is horrible on that log post shift, but yet it shows meth is flowing. If you have 0 IC, you are running way to aggressive. Thi slog is the main reason why I tell people to log multiple gears. This one gear wonder is nothing but bullshit for glory dyno numbers.

No, it's not too aggressive, it's just the way the post-hpfp recall DME targets ignition on a piggyback on 6AT.

I have the exact same problem which shiv blamed on my meth kit, which is bullshit in itself because the ignition only flatlines post-shift, not in the starting gear. It doesn't matter what boost I target, it happens. If I had octane-related issues, I would be knocking my face off in 3rd as well when timing is proper. Perhaps BMW implemented an IAT drop detection which flatlines timing on the latest DME software? Who knows.

Ironic how Shiv touted this problem was resolved on PWM meth kits yet PPS kits are no good for the "fix", and lo behold, PWM and PPS alike have the problem, which means his claims were bullshit to begin with.

To be honest, if this problem is fixed for good, I have no problems throwing the Procede back on and never switching maps or firmware again. Fat chance though given the way the Procede offsets ignition. Shiv, I know you're stalking, how about a REAL fix?

[PlutoniumTans]

Originally Posted by themyst

No, it's not too aggressive, it's just the way the post-hpfp recall DME targets ignition on a piggyback on 6AT.

I have the exact same problem which shiv blamed on my meth kit, which is bullshit in itself because the ignition only flatlines post-shift, not in the starting gear. It doesn't matter what boost I target, it happens. If I had octane-related issues, I would be knocking my face off in 3rd as well when timing is proper. Perhaps BMW implemented an IAT drop detection which flatlines timing on the latest DME software? Who knows.

Ironic how Shiv touted this problem was resolved on PWM meth kits yet PPS kits are no good for the "fix", and lo behold, PWM and PPS alike have the problem, which means his claims were bullshit to begin with.

To be honest, if this problem is fixed for good, I have no problems throwing the Procede back on and never switching maps or firmware again. Fat chance though given the way the Procede offsets ignition. Shiv, I know you're stalking, how about a REAL fix?

Yeah Shiv how about a REAL fix ?

[Ilma]

Originally Posted by themyst

No, it's not too aggressive, it's just the way the post-hpfp recall DME targets ignition on a piggyback on 6AT.

I have the exact same problem which shiv blamed on my meth kit, which is bullshit in itself because the ignition only flatlines post-shift, not in the starting gear. It doesn't matter what boost I target, it happens. If I had octane-related issues, I would be knocking my face off in 3rd as well when timing is proper. Perhaps BMW implemented an IAT drop detection which flatlines timing on the latest DME software? Who knows.

Ironic how Shiv touted this problem was resolved on PWM meth kits yet PPS kits are no good for the "fix", and lo behold, PWM and PPS alike have the problem, which means his claims were bullshit to begin with.

To be honest, if this problem is fixed for good, I have no problems throwing the Procede back on and never switching maps or firmware again. Fat chance though given the way the Procede offsets ignition. Shiv, I know you're stalking, how about a REAL fix?

I agree with your conclusion that it is not a 4th gear knock event.

The proof as you stated was doing a 4th gear pull rather than shifting from 3rd and getting a normal 4th gear timing curve. I observed this in my car.

So something is going on during the post-shift recovery process that the DME does not like (for some of us on the latest software) and I still don't know what it is.

I have not come to a definitive conclusion just yet.......but out of 12 datalogs I have gathered since the PWM install - only one has flatlined in 4th and that was right after an octane change. If this trend keeps up then I would have to conclude that the PWM has made a very significant improvement to my symptoms even though it may not have eliminated them completely.

I was flatlining 2 out of 3 times before installing PWM.

From what I followed on the other forum, people using JB4 were displaying similar dropouts while on meth. And Terry often states that ignition is very dynamic and reactive....so your curves will not always look the same as conditions change. Has there been any resolution to this issue from BMS? (A sincere question - not a dig)

Strange thing is when I changed from Sunoco 94 octane (which contains ethanol) to Shell 91 (no ethanol) I have not had a single flatline in 4th.

In fact, my timing in 4th is actually better on the 91 octane!

Compare the graph below which is on 91 octane+ meth to the one I posted earlier in this thread - which was on 94 octane + meth.

Seems like the 94 octane which contains ethanol is a lot less stable than the 91 which has no ethanol content.

Like i already stated......not a single flatline on 91

Mind you, I don't like how low the initial timing is when I start the pull on 91 which is why I switched back to 94.

If I get more flatlines using 94 this week, I am permanently discountinuing using it.

This graph is on 91 octane - with the same 80/20 meth mix I have been using all week:

[Ilma]

Originally Posted by NoQuarter

Clap... what you are saying about the timing is that it is down a couple degrees compared to the previous gear?

I'll try another couple more logs.

This car has a power steering cooler, transmission cooler (6AT), and an oil cooler most of which is in front of the radiator. I wonder if the temp rising is as simple as that.

Might have to see what to do about the intake air. I can't run my stock snorkel beacuse of the way I have to fit the charge pipe.

You lost more like 10 degrees of timing on the shift.....in otherwords you flatlined your timing curve.

This has been an issue for some of us with the new DME software reflash.

It is not your DCI. I run the DCI setup as do many others.

But regardless.....rising intake temps like that indicate something is not working right with your meth setup.

What was the source of your meth?

[NoQuarter]

Originally Posted by Ilma

What was the source of your meth?

I get my meth from a VP racing fuels supplier at the HQ of a local petrolium company. Pumps out of a giant gas station size tank and pump. Seems like a pretty reliable source.

[cwn23]

There is definitely something going on there with the IATs...I have never seen IATs rise like that, in fact they should be a noticeable downward log of IATs...

[NoQuarter]

Originally Posted by Ilma

You lost more like 10 degrees of timing on the shift.....in otherwords you flatlined your timing curve.

I see what you are saying now. I was looking at the max advance being a couple degs lower but the issue is that the timing dropped so aggressively immediately after the shift and stayed lower overall.

[Ilma]

Originally Posted by NoQuarter

I get my meth from a VP racing fuels supplier at the HQ of a local petrolium company. Pumps out of a giant gas station size tank and pump. Seems like a pretty reliable source.

Yes....if that tank contains VP M1 then you are good.

You should find out, because VP produces several grades of methanol....namely M3 and M5 which contain additional lubricants and combustion additives.

Only M1 is pure methanol no additives.

See this excerpt here:

http://www.vpracingfuels.com/vp-drag-racing.html

M3™
Like M1, M3 starts with methanol of the highest purity, but includes lubrication and combustion additives for an extra boost. M3 offers a wider range of jetting options, making jetting easier and more consistent. For bracket racers, variations in ET from run to run will be substantially reduced. With better tuning and cleaner, more efficient combustion, M3 makes more power and yields better throttle response than any standard methanol on the market. M3's improved combustion also reduces the noxious fumes associated with methanol fuels, so it's much easier on the eyes and nose. For 60-70% of methanol applications, M3 won't require jetting or timing changes-just pour it in and get an immediate performance improvement in all areas. In the other 30-40%, M3's added vaporization may actually hurt volumetric efficiency and performance, which is what lead to the development of M5. M3 is not pure methanol and won't pass a water test.

[Joshboody]

OP give some details on your runs. when was the posted logged runs in comparison to other WOT. For example did you do x runs in a row without much of a break. Do you cool down between runs. Stock IC right... maybe you were heat soaked.

[cwn23]

Originally Posted by Joshboody

OP give some details on your runs. when was the posted logged runs in comparison to other WOT. For example did you do x runs in a row without much of a break. Do you cool down between runs. Stock IC right... maybe you were heat soaked.

With meth? Heatsoaked