I need to have a datalog from my Cobb Accesport read,.. so I can find out what my max Injector Duty Cycle is.

I need that so I can set the scaling on my Aquamist HSF-3,... which needs to be set right so the tune can be completed.

Can anyone help me?

It looks like I can't put them in here,.. but if someone can PM me their email,.. I could email them to you.

Thanks in advance.

Stuart.

 

download it to tinypic.com and then link it on the thread

 

That doesn't work. It's looking for a picture file,.. and these datalogs are CSV files.

Perhaps there's a tuner out there I could pay to read them?

 

post them to datazap.me and then post the link

 

Ok,.. does this work?

http://www.datazap.me/u/duckstu/log-...9?log=0&data=1


And I'm not sure what all I'm reading,.. but is it pulling timing between 4,100 and 6,000 rpm on the right bank only?

It seems that Cyl 1 is pulling 3/4 a degree for just a bit,.. and cyls 3 and 5 are pulling 6.75 and 3.75 degrees respectively.



Also,.. now that I can see the data,.. I tried a few rpm points in an online IDC calc,.. and it looks like my max IDC is in the mid 50's ? Is that right?

This is stock engine, stock turbo,... 93 oct pump gas with and Aquamist methanol system,... and ID 1000 injectors.

 

Your timing correction is very odd. Normally the rpm/load range with timing a bit too aggressive comes and goes, and the timing correction tapers back off. Your corrections in cyls 3 and 5 show up suddenly and drop out suddenly and are around for quite a long span of time. Did you replace your plugs and coils when you did everything else? What plugs did you go with?

Also, what RPM does your meth system switch on? Seems everything gets pissed at 4k rpm, which isn't a typical range where the engine is particularly sensitive. Is this where the meth system activates? It looks as if it might be as your short term fueling goes more negative right at that same point as well. The timing corrections could potentially be related to relative rich conditions created in cylinders 3 and 5 due to uneven distribution of the meth in the intake manifold. Can you turn the system off and re-log?

Your IATs are awesome for summer temps (meth)...with the methanol system on, you should have PLENTY of octane to keep any timing correction at bay, yet you have quite a bit despite relatively tame absolute timing numbers considering the setup. See above.

 

The meth system doesn't activate based on rpm,.. rather just IDC.

There IS a way to make it run based 70% from IDC,... and 30% from boost,.. and I'm thinking of doing that. But I can no longer get a hold of my tuner,.. and he has either not responded to emails since the tune,.. or responded with answers that show he didn't really read them.


I did a second data-log that day,.. and it had much less timing pull than the log above. Nothing at all in cyl 5,.. and much shorter time in 1 + 3. This is the third and final version of a tune I got from him.

The first tune (V.1) was a place to start,.. the second had more boost and timing,.. and everything looked good to him,.. so we went further,.. and stopped on V.3,.. which is the first log I posted. He said we could push further,.. but it was probably best to stop there. He had me do 2 logs each time,.. here's the other one. http://www.datazap.me/u/duckstu/log-...ata=1-16-18-21



I also logged the previous V.2 tune a couple of times as you would imagine. It looks to have 1.5 degrees less timing and 1/2 lb less boost. No knock at all. http://www.datazap.me/u/duckstu/log-...3?log=0&data=1



I'm running two 1.0mm jets,... and 75% VP methanol,.. and 25% reverse osmosis water. IAT's on my Accesport are silly low. Bang through 4 gears at 22.6 psi and the IAT's are 4 degrees below ambient. Yay meth!

Here's a pic of where the jets go in.




The first tune I got

 

Go back to V.2

That log looks GREAT. Your boost is irrelevant when it comes to flow through the maf sensors and you are hitting 450 g/s on each, which is the max that I see as well. You are outflowing a number of upgraded VTG cars, just like mine does The car as it sits is faster on your V2 mapping than V3 with all the timing pull. I agree that your timing is a bit tame compared to what you should be able to run with meth, but for some reason from what looks to be a small bump in timing, the car doesn't like it at all (V3).

Your MAP sensor is saturated from 3500 to 4900 rpm which means you are running more than 22.5 psi of boost. Likely also similar to my boost curve of around 23-24 psi through the midrange. Absolute boost can't be more than around that with your VTG duty cycles which are just like mine also. The car has to feel quite nice.

Get some more logs of V.2 for completeness sake.

Finally, looks like you are using PTF. He should get back to you. How long has it been?

 

If you are using PTF, they are pretty good and responsive. Wondering also how long has it been since they responded.

 

Well,.. I asked him what my IDC was a month or so ago and he did respond with an email,.. but no IDC info.

Then I emailed him a couple of direct questions (What is my IDC,. and should I do what Richard from Aquamist suggests in reading 70% IDC and 30% boost for the meth),.. and there was no response.

Yesterday or so I asked thos e questions again,.. and he responded that he couldn;t help me. I replied that step one was knowing my IDC so I could set the scaler right in the Aquamist,... but no answer yet.

So I'm still looking fo my IDC's,.. but best I can tell they're 55% max? That means I should be setting the scaler at 1.75. It's at 1.0 now. Moving it to 1.75 will add mote spray,.. which may make the V.3 tune happy?

 

Why are you so interested in IDC? For meth injection purposes? Your fuel trims look to be ok. Not pulling a bunch of fuel in response to the meth being injected. I wouldnt want more than 10% fuel being trimmed. The less meth you can get away with and still have the performance, the better.

 

I have the other datalog from the V.2 tune. Here it is.
http://www.datazap.me/u/duckstu/log-...6?log=0&data=1

I really don't think the Aquamist is setup right yet. To set it up you need to know your IDC, so that you can setup the injector-scaling jumpers... and of course as you add power,.. that changes. So it's a bit of a catch 22. Take a stab at the settings,.. make more power,.. then refine the settings. So for a month and a half I've been asking what my IDC's are,.. with no response.

I may go back to the starter map and play with the scaler a bit. Move it from 1.0 to 1.75. Certainly I can always go down to 1.25 or something and run the V.2 tune.

From the driver's seat,.. the issue I have now is the turbos don't come up the same way each time. Occasionally they rush up to boost like you dream of,.. other times they come up lazily like they did stock.

Also,.. sometimes the lower yellow light on the Aquamist comes on and prevents boost (light for low water). But I have disconnected the level sensor,.. so I know it's not because of low fluid,... or a sensor ocilating.

It's the failsafes somehow. I have them opened up almost all the way,..and they still trip. We think (Richard and I) that the setup on it just isn't right,.. so things are operating out or the norm and tripping the failsafes.

Which means that I come out of a turn and don't know if I'm going to have 600 hp or 200.

So I needed to know IDC,.. and whether my tuner thinks I should solder the MPS jumper on the bottom side of tthe Aquamist brain,.. so that the system will run off 70% IDC,.. / 30% boost,.. instead of just IDC.

Would you know which is better?

The plugs I put in were Bosch F5DP0R. And I did the updated Beru -02 coils as well. Even with 20k miles on my car,.. four of them had one crack,.. and one had two cracks.

 

The Aquamist HSF-3 has jumpers to set injector scaling. If for instance you install injectors that are twice as big one day,... you would suddenly need to run the Aquamist at twice the rate as before relative to IDC. So there are jumpers on the board for that. They go from 1.0 in 0.25 increments up to 2.5 I think.

So if you want to run the Aquamist at 50% when the injectors are at 50%,.. then you jump the 1.0. If you want it to run at 95% when the injectors are at 48%,.. then you'd use 2.0.

Anyway,.. looks like I should be at 1.75 'ish. Which means I would be spraying a good bit MORE methanol than I am now. So perhaps I'll just try moving it from 1.0 to 1.25

It's hard to see how many bars are showing on the gauge when you're accelerating that fast though. I should video it.