clorigo

:)

Wrong assumption wross996tt if you are speaking of me. Read it cover to cover - just didn't absorb every feature. Would be nice to have the ability to absorb everything like that.

Funny I just noticed I could change all of this just this past week :) always fun to find new features :)

No CEL!

Seems the last crack found in the header took care of the p1145 and the stock exhaust's cats took care of the p0430 - now if I could only find the 60 HP that seems to have been lost :).

Don't miss the drone, don't miss the CEL, do miss the power. :)

Forgot to mention in the list of mods about the headers - techart headers.

Funny you say that. It was repaired off the car but while the exhausr was being changes he noticed another small hole in the header which is being welded. Simi_996 is probably right! Additionally bank 2 after car o2 sensor had some stripped wires and was replaced.

Anyway hope to get it back Monday with an update!

Mods (how I purchased):

K24 turbos

Silicon boost hoses (top only)

GIAC stage 3 (reflashed to UMW so I knew the tune and tuner)

TechArt race exhausr (part number 096.310.885.009)

Runs great powerful - just annoyed by the CEL.

Decided to take a radical approach. My Indy had a stock exhaust (near new) cheap and decided to try that to see if it is the cats. Replacing the bank 1 o2 after the cats (already did the one before) and the MAF. Didn't like the drone of the exhaust (but concerned about the power loss) regardless going to se if that gets rid of the CEL and drone. If so I will sell my techart and save for a Europipe Quiet (Kevin at UMW recommends that).

I will let you know if the exhaust change fixes it.

Thanks for all the help and feedback!

Well he (we) replaced the o2 sensor before the cat and did some data logging. It looked much better (normal) than the sensor replaced (the old sensor never went below 1 volt unlike bank 2) now they match more closely. However after about 35 miles of driving its on again with p1145. (Also p0430 but I believe that is unrelated? Different bank and cat efficiency)

Taking it back in tomorrow. More posts to come!

Charles

Hi Loren!

Had the headers welded. I checked the o2 sensor and i can see when in neutral and do a rev then a auick stop the voltage on bank 2 goes much lower. Maybe a lazy O2?

So now i am tired of the CEL and since I do not have the time to dedicate to it I am going to take to my Indy for his diagnosis. I'll post results!

No much - I changed out the MAF with a new one, got the same code and MAD seemed to go bad in a month (got a p0102) some quick research showed it may be the wrong model. Regardless I used some MAF cleaner on the old one and just put it in yesterday and cleared the code. Running well but really expect it to come back.

I read a recent posting on another forum which suggests a boost leak (that person was getting other codes along with the P1145).

Once it is time to do the breaks (soon) I will likely bring it to my Indy to do a fluid flush and let him try and diagnos (a different Indy suggested the GIAC coding which has been switched to UMW now and still throws the code.)

I haven't forgotten about this thread and will keep it updated with info. I'm glad there are people reading it. I wish I had better info. Any suggestions are welcome!

Well it wasn't the MAF. Replaced and cleared the code with the durametric. It certainly idles smoother and runs better but still has the p1145 code. Next I have the o2 sensor after the cat on order. I will replace and report back (wish I knew if it was the spacers!)

Thanks for responding! I will continue. :)

False air: air that enters the induction system but had not been measured by the Mass-Air sensor. The result of false air will be a too fast or erratic idle.

Okay did the MAF test (using the durametric and Following the voltage guidelines on here.) off it reads just above 1.0v running it fluctuates a bit but like 1.42-1.44. Didn't wait until it was hot. So anyway it seemed to pass that test but my idle with AC on or off is at 820-840 rpm (I have a umw tune so that may be correct)

Anyway just posting information - hopefully this may help someone else in the future!

More thoughts:

- False air on the oxygen Sensor after TWC

Figured out TWC means the catalytic converted (three-way catalytic converter) - so it seems having spacers on the o2 sensors after the TWC certainly could do this. Sigh. Maybe remove spacers. (previous owner had the spacers installed).

I wish I knew exactly what is meant by "false air". I feel another visit to google coming on. :)

More information: before I bought the car I had a PPI done with a leak down test. All cylinders were 5% except one that was 6%. Thought that seemed good. The CEL wasn't on at the time but afterwards the person I purchased it from mentioned it and said it was the O2 sensor. Of course I was maybe too trusting and believed him. Of course it could be that.

You know I have a durametric. Couldn't I just use it to test the o2 sensors? Also I've noticed about 1800 type 2 overrevs (thati thought was from the previous owner/giac rev limiter change - don't see any with my UMW tune). Regardless would type 2 do damage to lifters? And um that sounds expensive. :/

Thanks guys for the information you give - it is very appreciated.

Well the headers were not the issue. It came back :/. Replacing O2 sensors next (both before the cat)

Thank you!

Darn iPad - I mean the storage bin (runner?!)

I noticed today on the 996tt that is new to me that the rubber insert is missing from the center console (the rear part that opens and closes). Does anyone know the part number?

Thanks all!

Finally getting around to getting the work done. Getting the header welded (I know against many smart people) I had a long talk with the owner of the Indy shop with me saying stock headers are fine to go to - he said his welder was fantastic and it would not crack and send flakes into my turbo. Praying he's right. Regardless once I get it back and drive for a while I'll let you guys know if it comes back.

Hi all,

I want to say this is NOT a paid endorsement, I am getting NOTHING for posting this, just the hope that I am helping someone else with information (as you all have me through all the posts I have read and my other post on p1145)

I don't see as much information on here about this topic, so I thought I would share my experience for what it is worth in case any of you are thinking of an ECU flash.

If any of you guys are planning on doing an ECU flash to upgrade your car you should certainly consider and talk with Kevin at UMW (UltimateMotorWerks) -- He certainly doesn't come off as a pushy sales guy, rather someone who knows Porsche technology and can tune your car.

My experience was going from a GIAC stage 3 tune to the UMW tune. I have found that the car idles smoother, that its low end drivability is improved (likely due to the increased torque earlier) and when the gas pedel is pushed down it goes as hard as ever. I say it is an "upgrade" due to the increased drivability, not just crazy power. (although the crazy power is there)

Kevin also builds turbos and I am sure does other things, so I can imagine if you want to do more than an ECU flash he can help you there. I do mean help, he took plenty of time to talk with me about the tune to understand it and has helped with other issues.

Anyway, I thought I would share my experience and maybe help out someone --

I've noticed that only one person mentioned replacing the aluminum washers - I thought regardless they should always be replaced (learned the hard way once changing oil on a different car that leaked, always change them now. But I looked at pelican parts, Suncoast porsche, etc and have not found the washers. I DID order the Mobil Delvac 75w90. Should I change it and not worry about the washers? (Just re-use?) I suppose the viscosity is higher, maybe just thicker means less likely to leak?

BTW doing this on a 2003tt, are the drain/fill plugs the same (simular) 10mm alen, etc?)

Thank you in advanced for your help!

That's exactly what I was thinking (wasn't sure but I know air passing over a surface at high velocity can create a vacuum). Plan on bringing it in to my local Indipendant.i talked with him and he thought welding it would work.

Thank you!

Thank you for the tips. I will update after work is done!