Hey guys, I finished soldering my DIYPNP box a few weeks ago and I'm planning on installing it this weekend. To putting together a checklist and I'm hoping those who have done it before can review to make sure I'm not leaving anything out. A little info about my setup:

• Car is 1995
• Stock other than 2.5" exhaust starting at the cat
• A/C + Cruise (not sure if that matters)

My parts:

• DIYPNP w/ sequential module
• IAT sensor with suggestions on where to put it.
• LC-2 wideband
• Bench tested on MacBook

I haven't configured the sequential settings in TS according to the instructions but I plan on doing that after I determine which basemap to work from. Which leads me to my questions...

1. I've flashed to the latest version of firmware (ver 3.3.3) and loaded the 3.3.1a basemap file from here. When I loaded the file, it threw several errors, presumably because the firmware versions don't match. Should I be concerned? Does anyone have a basemap for the latest f/w?
2. As far as location for the controller, I've seen guys put the unit in front of the shift boot, beneath the shift console, as well as attached to the metal frame under the dash. What's the general consensus on best placement?
3. Wiring, starting with hot. Official documentation suggests adding a relay to the battery with a 5A inline fuse. Did you go this route? Did you find a good spot for the relay? I've also seen the factory EFI fuel pump relay or window switch used. Any reason not to do this?
4. Ground - Negative battery post recommended. Also recommended is to share ground with the ECU. Did you ground this way? If so, what was the order? Use the post and then may a Y to the ECU and LC-2? Or daisy chain in a specific order?
5. Yellow - To ECU
6. Brown - To AFR gauge? I don't have one. Do I need one?
7. Serial In & Out - I don't use these for my set up, correct?
8. I have a set of freshly flowed 550cc injectors, but I've read its best to figure out tuning on stock first and throw them in once I get that nailed down. Is that what you would recommend?
9. Anything else I should know that you wish you would have known when you swapped your ECU??

Thanks.

 

1. Ignore the errors, accept whatever it wants you to accept, change all settings to match what you are using. You now have a 3.3.3 base map.

2. WB controller outside in engine bay zip tied to brake lines. Sensor cable doesnt reach inside unless you make a new hole by trans tunnel?

3, 4, 5, 6, 7. Do exactly as the instructions say and well you need serial in order to comm with controller so what do you think?

8. Makes no difference but eliminates a variable. Make sure the info is correct for injectors, all of the info.

9. If you have a 95.5 the tach wire is in a different spot on the harness

 

1. I have a 3.3.3 seq. basemap i could send.

But I wire mine a particular way that differs slightly from the DIY docs.

I bring the a/c switch into PE1 and the output is on WLD or ALD (cant remember off my head). That way the MS controls the a/c compressor and you have the true idle-up delay for seamless activation.

2. Mine sat beneath my stereo and the sensor went down through the shift boot. Wire your DIYPNP to bring 12v and GND to the DB15 as well as the Wbo2 input--wire your LC2 back to the DB15. I suggest an inline fuse on the power wire.

3. no. see #2

4. no. see #2

5. yes.

6-7. eh.

8. up to you. 10minutes to swap, so might as well get running on stock injectors, then swap the new ones in to eliminate any variables.

9. make sure you sync the timing, and then go back to "use table".

 

Warning: Noob questions to follow.

That might be helpful.

So just to review the A/C switch input is 1Q and is going to both 1J and 4S (like the manual). Do you take 1Q to PE1 in addition to 1J and 4S or in place of 1J and 4S?

If I understand this correctly the DB15 serves as an output to the LC-2 and the MS gets its power from the huge factory ECU connector in the back.

2a. Is there a pinout standard for the DB15, or do I simply choose any 3 pins?
2b, Inside the MS, I run a wire from each of the 3 DB15 pins to 12v, ground, and O2 signal (4N on the adapter) respectively. Right?
2c. The inline fuse would be here: MS --> DB15 --> 5A fuse --> LC-2. Like that?

Honestly, I thought the yellow wire addressed that. Where do the (2) 4-pin connectors go? I was under the impression the OUT was used for loading firmware updates and changing defaults. Where does the IN go?

Noted.

 

1a. I came across an old post from Brain explaining the A/C wiring.

To recap, my current setup is:

• Omitted R14
• Relay 1 IN --> PA0
• Relay 1 OUT --> IL (radiator fan)
• Input 1 IN --> 1Q (A/C switch)
• Input 1 OUT --> 1J, 4S (?,?)

According to these instructions.

Implementing Brain's method would involve:

• Re-installing R14 (2.2k)
• Relay 1 IN --> WLED
• Relay 1 OUT --> No change, 1L
• Input 1 IN --> No change, 1Q
• Input 1 OUT --> PE1
• PA0 (or optionally ALED) --> 1J, 4S

Did I get that right?

Or do you skip the RELAY altogether, like this:

• WLED --> 1L
• Input in --> 1Q
• Input 1 out --> PE1
• PAO --> IJ, 4S

 

No, that is a signal wire. There are no "comms" on that wire.


These are your comm connections as you noted above. Read the instructions.

 

I know it probably seems like I haven't read the instructions, but I'm obviously still not getting it. There's a section that says:

This is not helpful to me. They also mention an included serial cable to connect to a PC (there wasn't one). If I've given the impression that I'm unwilling to read or research, I can assure you that is not the case. Maybe you could at least point me to the applicable page or give me a hint.

 

I think you are looking at the quick start guide. You need to look at the manual. Specifically section 5.

http://www.innovatemotorsports.com/s...C-2_Manual.pdf

It should include a serial cable but its a 2.5mm? jack to rs232 so its not useful for new machines unless you have a rs232 to usb adapter which I'm sure you have since you have a DIYPNP which doesn't have native USB.

On mine I had to communicate with the controller once since I needed two 0-5V wideband outputs and my LC1 came configured for one 0-5V wideband output and one 0-1V simulated narrow band output. One output was for the display gauge and the other to go straight into the DIYPNP.

Edit: The LC1 has 2.5mm serial connector while the LC2 has different connectors. Either way you need to adapt these to your PC to be able to comm with the controller. Likely you only need to do it once but.... you aren't using a gauge.

 

Thanks

Yes, I do.

Sounds like one solution would involve making a 4-pin to rs232 adapter. Then I could use the serial to USB cable I already have to comm with my laptop.

 

Did you get it used? All the ones I see online say they come with the cable.

 

Purchased from DIYautotune. This is what it came with. Am I missing something?

 

Yeah you are missing the serial comm cable. Unless this was some kind of packaging that didn't come with it for some reason. Shoot them an email. Might have to wit til tuesday for a response.

 

Call of the search. I dug through another box and found it buried, along with the manual.



Thanks for helping me realize I needed to track it down. So...to take it full circle, after programming via PC, I won't need the Serial IN/OUT unless I have a gauge.

 

Actually since you only need one 0-5V signal (which you currently have available via the yellow wire) you don't need to comm with the controller at all. It should work as is.

Now if you want to confirm you have the latest software, etc. then go ahead. Or if you get a display gauge that works on 0-5V or even some other voltage requirement.

Note that some people have needed to fine tune the reading in the Tunerstudio gauge to read the same voltage as reported by a display gauge. Generally it's off by .2-.3 AFR. So maybe hook up to the controller and confirm you are getting the same readings from the controller in TS. If not, adjust TS WBo2 settings in "Tools" "calibrate AFR" or something like that.

 

Can anyone else comment on post #5, regarding Brain's A/C wiring method?

 

<p>WLED - 1L</p><p>ALED - 1J, 4S</p><p>Input 1 IN - 1Q&nbsp;</p><p>INput 1 OUT - PE1</p><p>Input 2 IN - 1V</p><p>Input 2 OUT - FLEX</p><p>PAO - Boost IN</p><p>Boost OUT - DB15 pin</p><p>&nbsp;</p><p>need to put the 2.2K resistor on R14 back.</p><p>&nbsp;</p><p>&nbsp;</p>

 

Thanks. Much appreciated.

Input 2 and Boost are new. What do they do?

Did you mean need to "cut" the R14 resistor?