by John in OkieLand
Position ZERO is stock as supplied by PHP.

you are getting into Semantics, which is what I was saying, PHP says that 00 is 'stock' or whatever is programmed into the PCM, it is NOT a tune by PHP

17 is No Start, and is a tune by PHP and fixed, we can't change it.

 

Semantics or not (which is NOT the way I read it and NOT the way the uninitiated would read it either) it reads that it's "stock" from PHP's library ("supplied by")

If you just have to feel better about your post, go ahead. *Edited because my response was mean*

"nS" isn't technically a "tune" either. But hey, semantics.

 

Okay, that's kind of what I was trying to get at. so something in the tuning is off which is odd.
Hopefully Cleatus gets you squared away

 

vlb1

 

I've done a little digging and ended up emailing PHP about the anomaly. I don't have a stock VQAA7S2 (VLB2) calibration so if anybody has a van, and a Hydra, with that calibration it would be REALLY cool for somebody to read their stock PCM with their Hydra and email me the stock tune!

I have VQAA9S3 (VLB4) stuff but it would cause a mix-and-match error when switching tunes.

I'll let you know if PHP responds. I could just text Bill but I hate bothering him about this kind of thing when he's got other stuff going on!

 

I read the PCM, have the file, what is your email?
the prompt after actually says "the calibration in the ECU was identified as VQAA9S3.HEX"
entering VLB1 into the lookup tool it had me use VQAA7S2 I also have that files saved as well.

 

I don't know if what I typed was confusing or not but here's why I asked, specifically what I need, and why:

PHP's library points its customers to VQAA7S2 because that's the set of files they've put together for specific vehicles. This "hex code" specifies the calibration connected to "VLB2". I do not have a stock VLB2 calibration to write new tuning for although I have the necessary software to modify it (the VQAA7S2). If I don't write the calibration SPECIFICALLY as a VQAA7S2, then anytime the calibrations are switched between that and a different hex code (such as VQAA9S3 or VLB4) on the chip, the engine will stall or stumble or worse. I have a stock VQAA9S3 so I don't need that.

Long story short, if I want to write tuning that will play nice with other tuning on the Hydra, I have to use VQAA7S2. The VQAA7S2 you have saved on your chip is not readable/modifiable as it is encrypted specifically for your chip's serial number and nobody can read it/extract raw binary from those saved files. The only files not encrypted are the ones read from the PCM's flash memory.

 

I'm going to ask you to do something as a test. The calibration library has a lot of tuning available for VQAA9MZ (HPI3) which is nearly identical to your VLBx calibration (49-state calibrations) and uses the same hardware/glow plug stuff. Throw a few of those on your chip and see if that takes care of your problem! Judging by the list of calibrations available in each hex code, I am going to assume that the HPI3 tuning is a bit more refined than the VQAA7S2 anyway just for the simple fact that I would say the VLB2 tuning is much older.

**EDIT** This calibration swap is no different for those familiar with the "DPC-422" PCMs for the 1999.5-2001 pickups when going from something (for example - not specifically) like an NVK4 to a PMT1.

 

I don't have a van...If I am understanding you correctly, You want them to do the read PCM function? Andrew for some odd reason has been having difficulty getting my tunes dialed in. He had me read the PCM and send him some file it saved...I'm guessing that's what you are after

I'm of no help, just trying to understand better

 

I added vqaa9mz tunes

It runs but gets a CEL after running for 20 seconds. So i didn't drive it on those tunes. Still have elevated idle. Will get a scanner on it tomorrow to see what code.

 

There's no sense in driving it if the idle still elevates.

I'm out of ideas from my office. You didn't happen to start it in a VQAA7S2 calibration and then switch to a VQAA9MZ did you? That can cause all sorts of issues besides just stalling/stumbling.

 

Fired it up on 0hp on the 9mz cycled through them all, and yeah it does shut down when I go from 9mz to 7s2

Idle is 660-670 on 00 or 01 which is stock 7s2
any other tune it goes to 770rpm

Its interesting to me that stock 7s2 is ok, so it doesn't seem to be a problem with 7s2 as a whole.

 

Cel was no transmission sensor.

On the 100hp 9mz throttle response is better and seems to run better. Didn't get it over 60 due to traffic shifting was fore sure different seems like no converter lockup at 55 in 4th.

Has me thinking I need a good custom tune.

 

If the converter clutch isn't applying and the code says no vehicle speed - STOP USING the VQAA9MZ

 

I had a few extra minutes today so I swapped in a DPC-425 van PCM to my Crown Vic and slapped in a stock and 65DD on the chip from the PHP library (Hydraflash). I experienced none of the idle anomalies with the car on the VQAA7S2 calibrations although it's only a van PCM in the wrong vehicle - there may be something to that so don't take it as fact that there isn't anything wrong with the calibrations.

I also received an email back from Bill stating that there may be some other underlying issue with your vehicle simply due to the fact that the calibrations for that hex code have been rewritten recently and nothing differs from stock at idle fuel rates. We are both suspecting either a skewed ICP or EOT since fueling is based primarily by those. I would also look at maybe a low stall torque converter causing extra load at an idle. It makes no sense to me that it would ONLY happen in anything other than stock though so don't go throwing parts at it yet. Bill sent me his folder of Hydraflash VQAA7S2 calibrations to look them over. I will see if there's anything that stands out. Bill is the expert though - I am merely a student.

I'll turn on my PMs for the weekend. I have plans tonight and work in the morning so give me a few days. If you would like to give me your email address and Hydra serial number I will see if there's anything I can do for you to try out - and it will be the VQAA7S2 calibration so you can freely switch between the different source tuning. If they don't work, don't shoot the messenger. If they do, then that's good.