neversummer

Also did you unplug your Tiptronic control module? I figure unplugging this would be a good idea so its not in the loop and trying to communicate to the DME or missing transmission.

gcracer1

I bought the PIWIS from VXDAS. Transaction was smooth and computer works well.

gcracer1

Yes, the TIP CU is removed.

neversummer

Thanks for the info!

gtxracer

I also converted my 996.1 Tip to MT. I ran braided hydraulic lines instead of the OEM lines.

Not sure I saw it mentioned - the shifter cables are different from .1 to .2. Make sure you get the correct cables for the MT transaxle. It’s the transaxle ends that are different.

Axles appear to be the same from .1 to .2 and you’ll need the MT axles, I think you mentioned this.

Brake pedal is the same, you just need the clutch pedal and slave cylinder. I bought a master cylinder with the MT master reservoir that has the hole for the slave line hookup. I sucked out the fluid via syringe, popped off the old Tip reservoir from the master, and popped on the MT reservoir. No need to swap the whole master and deal with that mess.

The .1 is the same transaxle mount for Tip and MT, you mentioned that.

You’ll need to defeat the NSS. I did this at the Tip plug at the tunnel under the car, hardwire. I have a photo somewhere, let me know if you need it. You’ll have to do this or some other NSS defeat for the starter to engage.

Plug the Tip coolant line near the transaxle or buy the MT coolant line to swap it.

Your car has the third radiator up front since it was a Tip.

neversummer

I'm working on the wiring now for my swap. Can we get that picture of what you did at the Tip plug?

e30rapidic

my car must have been an anomaly! C4S tip with only two radiators. But it runs rock steady at 180, so no worries.

gcracer1

At the TIP plug there are 2 wires for the reverse light circuit (at least on my car). I tapped into these and wired to the MT reverse light switch. Other than that I just taped it up and tucked it away.

neversummer

I found those already. I was talking about the NSS defeat you did.

gcracer1

If you are asking about the clutch-starter interlock I wrote about this in my initial post under the "clutch" heading. Sounds like neversummer found another method.

Pierregirard

In your situation, I believe using specialized tools like the PIWIS3 is really important. It's key for figuring out problems, coding, and maybe adjusting the DME to work with the new manual setup. I know from my own experience that dealing with tools like PIWIS can be tough at first, but if you stick with it, you'll get the hang of it and it'll all be worth it in the end.

neversummer

I was talking about the reverse light from the MT gearbox to the two wires that plug into the shifter for the automatic gearbox. I bought a full manual car harness to get the plugs I needed and the plug for the reverse light has the matching wire colors for the two wires off the auto shifter for the reverse lights

I'm talking about your comment that you mentioned you had a picture of the NSS defeat you did at the plug under the car. Am I missing something here?

e30rapidic

I extended the wires from the plug where my jumper is. That jumper was my test and it turned on the reverse lights….

neversummer

Sweet. I figure those would work perfectly for the backup lights. Do you have pics of how you did the clutch pedal switch that tells the DME that the pedal is pushed in?

The wiring for the cruise control switch looks super easy.

e30rapidic

Found some randoms....not sure what they all mean yet as I'm sweeping through really fast and uploading what looks helpful. I have hundreds, if not thousands, of photos for all parts of the swap!!

Fire away with questions....