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Pectel ECU users roll call


Vovchandr
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Any other Pectel owners are active on here?

 

I'm making more and more headway with this dated ECU and I think as a group think we can all help each other because information on it is very very limited online.

 

Current barrier is trying to figure out datalogging. I'm not quite sure how to turn it on and review information.

 

After spending time with the tuner the significance of datalogging to help me troubleshoot the remaining driving issues is pretty clear. 

 

If I can't sort out how to datalog with the Pectel I'll likely consider switching to a new standalone and learn how to wireharness 101.  @DaveD

 

Edited by Vovchandr
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It's been a while, but I used their T6 system at work frequently and I'll try and help out. The Pectel stuff isn't too bad to use, but you'll have to commit to some digging to get familiar with the way it's laid out. The documentation within the software is decent. The datalogging features work well and once you get the hang of it you should be off and running.

 

Essentially you set up what you want logged and the logging rates, upload the info to the ECU, then once you're done with your test you download the data.

 

What parameters would you like to log?

 

Andy

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24 minutes ago, ashyers said:

It's been a while, but I used their T6 system at work frequently and I'll try and help out. The Pectel stuff isn't too bad to use, but you'll have to commit to some digging to get familiar with the way it's laid out. The documentation within the software is decent. The datalogging features work well and once you get the hang of it you should be off and running.

 

Essentially you set up what you want logged and the logging rates, upload the info to the ECU, then once you're done with your test you download the data.

 

What parameters would you like to log?

 

Andy

 

I'm on T2 but should be pretty much the same.

 

At the type of tuning we were unable to street tune or setup logging so everything was done live and worked pretty well on the dyno. However on the street I still have some spots in the tables where the car falls flat so I'd like to mess with the AFR's against the TPS/RPM table to get those dialed in.

 

Still trying to figure out how to log my AFR's from the AEM but that's next step once I figure out how to datalog the basics and during street tune maybe I'll be able to do on the spot without a log even?

 

WOT pulls work pretty well right now. Some partial throttle pulls of various loads result in a "dead condition" for a few seconds once off the throttle and I think that can be dialed out. 

 

I have a very very rudimentary understanding of what I'm messing with but tuner helped explain what I'd need to do once I got things sorted out and was able to look at the data. IE If my AFR is high when the problem occurs, bring the number on the table down. If AFR is low, bring the number up. Simple enough directions for me to do. 

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Do you know how to pull up a 3d representation of the fuel and timing maps? Please add detail describing the "dead condition" and what conditions cause it. If it lasts for a few seconds something is amiss.

 

I'll have to see if I still have a copy of the software around and do a bit of a refresher.

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3 minutes ago, ashyers said:

Do you know how to pull up a 3d representation of the fuel and timing maps? Please add detail describing the "dead condition" and what conditions cause it. If it lasts for a few seconds something is amiss.

 

I'll have to see if I still have a copy of the software around and do a bit of a refresher.

 

I think there was a button to pull the 3D up but I haven't done it yet myself yet

 

"dead condition" happens after a partial throttle pull, then coast then on throttle again. If I recall AFR maxes out at lowest indicated of 10 and the car stumbles for a second or two then resumes as normal. Theory is I flood cylinders out with too rich of a condition. I also go rich on throttle lift, not lean, which I always thought was strange and so did the tuner. 

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5 hours ago, Vovchandr said:

Current barrier is trying to figure out datalogging. I'm not quite sure how to turn it on and review information.

 

After spending time with the tuner the significance of datalogging to help me troubleshoot the remaining driving issues is pretty clear. 

 

If I can't sort out how to datalog with the Pectel I'll likely consider switching to a new standalone and learn how to wireharness 101.  @DaveD

 

If the wording is greyed out and the "light" is black, you probably do not have the data logging software which is an add-on. What version of Desc PRO are you running? I guess you have an old XP laptop or running virtual?

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I do not know much about it, but my car uses a Pectel ECU. I have all the software to tune the engine and I think I have a manual, but I will need to check. I would like to learn something about it and would be happy to share. 

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Does a Pectel T2 ecu use a MAP/barometric sensor or is it Alpha-N? I guess fuel control only/no ignition control through the ecu?

I expect the resolution is limited. You can probably widen the steps at the extremes for tighter maps/smaller steps in the problem areas.

Sudden throttle closure would go instant rich, at least monetarily.

 

I see it supports MAF and MAP. More modern than I though.

Edited by MV8
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Vovchandr,

I recall that this engine has had its share of issues. Is this "dead condition" a new thing? In addition are you sure your TPS is set up correctly? If the idle setting's off a bunch you could be "falling off" the map causing a bunch of fun.

 

Typically when mapping a system like this I set the drop throttle fuel to 0 ms until around 2500 RPM, then I turn the fuel back on. I'd be curious to see the fuel map and the ignition map for your setup to see what's going on. When you did the mapping did you use an inertia or eddy current dyno?

 

CarlB if you can send a copy of the software my way and Vovchandr can send a copy of his map I'd be happy to take a look and try to help.

 

Andy

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I hadn't looked for the computer and and software sense it was handed to me when I got my car. I found the computer and it boots up. It is a Windows 98 /NT computer, and the software runs Dos. I never messed with it because Quicksilver is around the corner from me, and they know how to use the program. I can't get in the computer because I do not have the password. I will get in contact with Michael Dougherty. Hopefully he remembers.

 

 

 

 

 

 

 

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There are two companies I know can help you. One is Quicksilver Race Engines (301-698-9009) Speak to Eric. The second is Franz Diebold (540-808-2918) Franz works on all the IMSA and half the Indy cars. He also does real motorsport quality wiring.

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Posting pics of the screen with different tables and settings displayed might help too, so everybody can see and we all may benefit.

I don't think you can use any software other than the desc pro and data logger add-on for the T2. Someone would need to write a program (BIN) to bridge the hardware differences for display and making changes on more common software that works off the shelf with common aftermarket ecus. T2 is no longer supported.

Carl, Have you tried hitting "cancel" instead of entering a windows password in the laptop?

DESCProW-Manual.pdf pectel t2 ecu.pdf

Edited by MV8
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On 8/3/2022 at 5:02 PM, MV8 said:

If the wording is greyed out and the "light" is black, you probably do not have the data logging software which is an add-on. What version of Desc PRO are you running? I guess you have an old XP laptop or running virtual?

 

I was running a very old Win98 laptop until literally today I discovered that there is a version of DeskPro that works on my modern Win 10 laptop!!! Huge breakthrough. I can actually use a laptop that doesn't require to be constantly plugged into the wall in order to work

 

Here is a map screen shot

 

image.thumb.png.ba93bda3f86ba8e939b6919728a33c32.png

 

Only sensors on my ITB setup is TPS and IAT and it uses those two to run the car. 

 

 

My idle setting is a bit of a wild card. My car was build with ITB's and IAC, but that's very unusual. I'm not certain IAC has been working at all nor me or the tuner knew how to make it work so we just have idle set with a butterfly stop and no vacuum rail (all plugged). I'm fine without it but if ECU is still trying to hunt for IAC but we aren't using it, it could be a problem?

 

I'll try to figure out ignition tables next. I know tuner had a hard time finding them and not sure if he ever did. 

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I see you have all the normal sensors based on the upper right corner. IAC is more likely Intake Air Temp.

You have only one map under the FILE tab when plugged in to the powered on ecu ("online")?

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Vovchander,

Looks like progress! I'd suggest ditching the IAC, there's no need. I'm actually surprised someone took the time to hook a system up. The ports will be nice for balancing the throttles :) .

 

To run this setup you primarily need RPM, TPS, and ECT. The remainder of sensors (ACT, BAP...) work to modify the values from the 3D fuel and timing maps. The fuel map will be a combo of RPM and TPS giving an output of ms of injection time. The ignition map is much the same but the output is in deg. of crank rotation at firing.

 

I'm concerned about your idle setting. Think of the idle setting as the anchor point. If the idle setting is incorrect the entire map will be shifted and can lead to a bit of a mess. Some questions:

Have you balanced the throttles?

Do you know the intended value of the TPS at idle on your original map or current map?

How did your tuner do the mapping? Did they run the engine at various loads and throttle openings or just do WOT acceleration runs?

 

If you can post a screenshot of the fuel and ign. maps with the throttle at idle and the maps "live" that would be helpful as it will highlight where you're currently set.

 

Andy

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