QuickOne

Help!!!

I just finished up a leisurely install of some Fabspeed Headers, an IPD Plenum and GT3 throttle body on my brand new Spyder (only 150 miles on it).

However, it's now throwing a ton of codes and I'm not sure what to do. I had the battery disconnected during the install, but it seems to be an issue with the throttle body - I'm not sure.

I only have a Cobb AP to pull the codes. These are what it reports.

DME
- P1502
- UC418
- P1517
0x773
- B8E04

Any help will be greatly appreciated!!!!

Dr. G

You may need to recalibrate the ECU for the TB. When I spoke to John at Fabspeed he said they use the PIWIS tool to do it when they install them.

QuickOne

No, I wasn't aware that was necessary. Do you know if there is a way to do this in a sequence with the car? Possible if I leave the battery disconnected for a long period of time?

Also, I reset the codes and P1502 is gone. Only the others remain.

Dr. G

I don't think you can do it yourself. There was talk of a Cobb solution, but I don't know if it ever came to fruition. I know some people had their dealer do it.

QuickOne

I just realized there is an A/C bolt in the kit that I didn't install. However, I didn't notice any location where this would need to be replaced - nothing seemed to be out of alignment. Any ideas if this is needed?

QuickOne

Actually I just reinstalled it yet again and put that bolt in this time. It didn't seem to have any impact to the overall code.

Guess I'll be calling the dealer to see if I can get them to come out to my house. Ugh.

John@Fabspeed

With the IPD Plenum/GT3TB combination (on the 981 in particular) there has always been the possibility of MAF codes occurring due to such an increase in air flow the ECU has trouble adapting right away. A throttle body calibration via the Porsche Piwis scan tool, or a protune via the Cobb Accessport is sufficient to eliminate the MAF codes. PM heading your way now, let's get you taken care of

kitwetzler

This is not due to the IPD plenum, I would guess there is something loose or disconnected with the idle control valve or it's connections.

The common codes you'll get from the IPD and 82mm TB are :

P0068 mass airflow implausible
P1074 mass airflow partial load implausibly high

You have:

P1502 - Erratic idle
P1517 - Intake Manifold Runner Control Input Error (Bank 2)

I would first check the actuator for the flap in the IPD. Make sure it moves freely and that you connected it right. Make sure that the vacuum actuator is plugged in and connected correctly (and the 981 IPD manifold is really for a 987.2 and has the vacuum actuator mount on the wrong side, so you'll have to come up with a way to moun the vacuum actuator - I made a small bracket for it.)

The A/C bolt shouldn't be used on the 981, AFAIK.

I'd check the hose clamps as well, they are easy to bind and get stuck, especially the ones to the intake manifold runners. Neither code you have are related to the TB or Plenum directly.

There is no need to do any adaptation - the car does it automatically. PIWIS not required.

QuickOne

Thanks Kit - today seems to be different.

Last night it was idling ok, just didn't have any throttle response. I put it back in the garage (idling in 1st to actually move it). Today, I started it back up to pull the codes and some information from the AccessPort and it's idling like total crap. It is super rich and simply barely running. Now code P1517 is gone and replaced by code P1540.

I installed the plenum several times and couldn't find any loose sensors or clamps. Everything seems in order. I did have to zip-tie the solenoid to the hard-line running across the plenum, as you suggested, due to a lack of a mount for it. Really this should have been simpler, but whatever...

The AC bolt is required for clearance, I believe, but I couldn't tell for sure after having it off. Either way it's installed now.

I'm not sure why it's running so poorly now...

I've built many race cars, and rebuilt many motors so I'm confident in my mechanical abilities. I'm fairly sure it's installed correctly (as I installed it 3 times to try and determine what's wrong), but this is escaping me.

Fabspeed is in the process of getting a pro-tune worked up for me to help mitigate some of the issues, but this seems completely excessive at this point.

il pirata

Just as an FYI from the IPD FAQ page

"11. Do I need to make any changes to my ECU/DME after installing the Plenum?

The short answer is NO. The factory ECU/DME will make all the necessary "adaptive changes" to accommodate the additional air flow provided by the IPD Plenum. A mass air system constantly adapts for changes in the inlet tract. Only in very high power turbo systems are the limits of the stock mass air meter exceeded and provisions need to be made, but short of that the plenum will not cause any calibration issues.

You might want to talk to IPD directly, it's highly likely you do not need a "tune".

kitwetzler

Hm, did you check the solenoid/vacuum actuator for the plenum flap? Mine was sticky when I first installed it and had to wiggle it around with my fingers. Bad TPS sensor in the throttle body?

I would also give Cobb a call, they're great with diagnosing these kinds of things too.

Ddesimone17

Email Mitch

Kit is right those are different codes , need to make sure everything is seated and sealed correctly and flap retracts

Ddesimone17

Pics usually help

Ddesimone17

Seated n tight

Ddesimone17

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