Ridiculous conversation on this thread.
The only tune is GIAC Stage 2 tune.
I have been tracking (no, not at the drag strip) my car 2 times a month,
No issues. Just fun pulling away from the guys in GT3 cup 997s and 991 Gt3s, then driving home!
Have run at the drag strip , which I do just for reference point.

 

Hey Karl. Nice times. Did you add IPD plenum? Are you running headers? If you have IPD, any issues? Thx

 

The conversation is ridiculous only to those that have already voided their warrantee and don't care.... must be nice ?
I keep digging and I keep finding interesting stuff....

Here are the gains from the IPD Y plenum alone and a GIAC tune with who knows what.... It seems the IPD Y may be a good move on its own with a free flowing exhaust..

 

Boom

Awesome Karl. Enjoy!

 

And you think that an intake won't void your warranty? A giant aluminum heatsoaking intake that has the fittings for the AOS breather and fuel cell vapor line in the wrong place causing the passenger side cylinders to run rich during hot weather?

You are a troll and there is no real point to your posts other than to incite argument. Please go away.

- Patrick

 

Yes IPD also.
Also, i know my warranty is only toast on my drive train. Everything else is covered.

 

Dude try to understand the post and the workings of the engine dynamics. Sometimes it's better to just shut up and let people that know what they are doing respond to my questions.
Stupidity is strong in you I see.....

This is the IDP plenum, seriously dude shut up and try your personal brand of ignorance on another thread.

 

Yeah, what would I know? I'm just an engineer and FAA licensed Airframe and Power plant mechanic.

I know what the IPD plenum looks like. I had one and almost installed it on my car but wasn't convinced that it was an appropriate mod given the improperly placed fittings and the "997.2" stamped on the front... For someone who is so concerned about their warranty, you shouldn't even be asking about this part because it will void your warranty just the same as a tune. The only remaining reason you would be asking about it - in two different threads - is to pick a fight. And for a guy who claims to know so much, how can you not understand heat soak?

So far, your version of participation has been asking one or two questions and then spending the rest of your 32 posts making snide comments and baiting people into warranty debates. Now please go away. You are not contributing.

- Patrick

 

Heat soak from this small plenum is your concern
Dude you may like to know that there is a constant stream of air flowing through it all time when the engine is running, maybe you can tell me the intake air temp flowing through this Y manifold at idle and under sustained boost vs ambient air temps since you are afraid of the so called "heat soak issue you claim...

I would bet a better flowing y pipe has a better chance of maintaining the factory warrantee than a "for off road only tune".

"Improving the performance of an engine by altering the engine's computer software may cause the engine to "work harder" and could result in damage to the car. The user assumes these risks. GIAC is not responsible for damage to a car of this kind. All of the items GIAC sells are for off road and racing use only and have not been tested or approved by any federal or local governing agency and are not approved or recommended for street use."

I'm not looking for a fight so stop provoking me because you will only loose when it comes to this stuff...seriously try reading the thread titles for a change.

I came to this forum to see if I could learn something about my new car but instead I got the porcupine in a car story validated....

I'm still waiting for any aftermarket tuner to properly answer the questions I've been asking...

 

Nobody is answering your questions because based on your history there will only be two outcomes:

1. If nobody provides data you will tell us all what a bunch of lemmings we are for not "asking the right questions" before buying the product.

2. If anybody does provide data you will tell us all we are idiots for buying a product that you have deemed inferior.

Either way, we collectively groan and you look like a tool. That is why your question is not being answered. The other reason is that tuner shops don't generally do the R&D. The manufacturer generally does that so why don't you call IPD and then call GIAC and leave us the hell alone. We don't want to "loose" any more arguments to your superior intellect.

- Patrick

 

Why do you want a warranty? I think that Porsche is a pretty reliable manufacturer, BMW not so much, the warranty is important there. I had a lot of Lexus and only once needed the warranty. Of course driving a Lexus is like driving a marshmallow but they are good cars. I did need the warranty on the BMW and so I went with Dinan. I had a flash on my 535i which made an additional 85 hp and most of the useful torque and hp was at the low end. That was a flash tune and it was only $1800, a lot of bang for the buck.

I don't track cars but I like driving fast when I get a chance and it's safe, i.e. no other cars around. There are a lot of roads here in Texas and out there in California where that is the case. The tune for me is just something I added to see how much difference it makes. I think the piggyback on the M5 was not a good idea, I had a lot of problems with the car after adding it, OTOH, I think maybe the M5 isn't such a good car but it could also be the piggyback that caused the trouble.

The biggest bang for the buck on that car was to basically straight pipe it with RPI and both in Texas and California, you can't get the car inspected plus it stinks. I went for Noelle down pipes, the Dinan exhaust and the Dinan module. I think that the exhaust and the downpipes were good additions, I don't think the module was because it was unreliable. I did have it replaced because it quit working which I discovered by losing a race and then going and doing some Vbox measurements.

I am not sure the BMW wouldn't have had problems irrespective of mods. I had four BMWs and three of them had lots' of issues in the first 50k miles. So far my two Porsches have been no trouble but I have only had them less than a year but we have 14,500 miles on the CTTS and it's been all over the state and up to Colorado and back. It's a great auto.

I have headers, IPD Plenum and FVD exhaust aside from the module. I love what the passive bolt ons do for the sound and I know the IPD adds some power in the mid band which I can feel. The thing that I think is weak about the 991TTS is it's failure to pull above 125mph. You can see this in races. Of course on a circuit, it probably pulls enough out of turns and this isn't an issue but it is if you like top ending a car and I do.

I also like you bought mine used. I got it with 3k miles for $157k in August 2014, it's a 9/13 build. It had a built in 9500ci, front and back bra and the FVD sound exhaust from the previous owner. I spent $7500 on the plenum, module and headers. I don't think I will drive the car enough miles to get to 50k before 4 years and don't think normal wear and tear is going to bring any warranty issues that would be voided by the piggyback into play. If they do, then I guess I will have to eat the cost. I know the piggyback has added power to the car that I can measure and I am aware that the warranty coverage could be brought into question by the dealer but I own two high end Porsches and I think that the company would prefer to have me as a repeat customer and may for that reason work with me. I could be wrong.

I am 59 years old and this car is an expensive toy that I can afford because of a nice turn of events in my life. Honestly, a lot of your comments that are blanket criticisms of other owners on the board are inappropriate. Do what you think is best and don't call others fools for what they do. Everyone does foolish things in their lives based on bad information or lack of forethought. Let it go.

I would agree that the safest mods to the car would be exhaust, headers and IPD plenum. You won't get big performance gains but the car will sound better and I think it will be something your butt will notice but I would suggest a Vbox anyway. It's a decent tool for only $550.

 

I would bet that any power adder that causes the engine to perform outside of its design parameters and produce more power than it was warrantied for will void the factory coverage. Your transmission doesn't care whether it is being fed 55 more hp due to an intake or due to a tune. Your driveshafts and awd system don't care if they are getting 55 more hp from an exhaust or an intercooler.

At the end of the day, all that matters to the people who make warranty decisions is that you altered the output of the car. If I was a dealership and your car came to my shop with full bolt ons and a connecting rod poking out the side of your block I would politely hand you a bill for $65k. You can quote Magnusson-Moss all you want but it would take me a matter of seconds in a court to create a shadow of a doubt that your intake and exhaust caused the failure and there isn't a damn thing you could do about it. If you alter the output of your engine, technically you have voided the powertrain warranty..

If you think that a 5 pound slug of aluminum in your intake tract isn't going to cause heat latency then you are absolutely of of your gourd. And when you show me a CARB exemption for the IPD plenum and aftermarket exhaust then maybe I will believe that they are not "for off road use only" just like the GIAC tune. So here we go again. You insult us, contradict yourself and derail threads and then ask for help in return. Please GTFO.

- Patrick

 

With all due respect...there is no one at the dealership level that can peform this type of "ECU scan". There are other ways they indirectly determine if your ECU is flashed, but there is no such universal "scan" that can see it.

Again...with all due respect, the 991 Turbo platform is an extremely competitive market right now, so there is certain information that I would not expect GIAC to post on the forums, or share with anyone outside the company at all. Anything that could even in the slightest, remotest, .0001% chance be used a competitor to even remotely extrapolate anything about the GIAC software or how it's tuned will most certainly never be shared.

Think of it this way...when you buy a laptop with Windows (or Mac-OS if that's your flavor)...you know you're getting something that works. They don't share the source code with you inside the box. You get it, you turn it on, and it just works. Our GIAC software uses the same philosophy. You install it and it just works. There are literally DOZENS of customers out there with proven results at the track and on the street who can confirm that the software performs exactly as advertised.

On the other hand, I TOTALLY understand your concerns about warranty issues, and you're absolutely entitled to your opinion. However, I'll offer one small piece of advice. The 6Speed forum is a community....one that thrives on friendly discussion and a sense of comradery. Coming in as a brand new user and immediately butting heads with long time users just never ends well. You seem like a knowledgeable guy...try a little less abrasive approach and who knows...you just might like it here.

 

Extremely well said Tom!

 

When a GIAC dealer tells me Porsche can scan the ECU for reflashing and stored performance history I kinda believe him. I'm sure if there is a major driveline issue the dealer will call in the factory rep to do the indepth scanning.
Well I guess there are no dyno sheets from any vendors that show claims in performance other than just full throttle dyno pulls. Or are there any before and after exhaust system dyno sheets showing the gains being lost from the freer flowing exhaust with the ECU adapting back to stock settings, or dyno sheets showing the IPD Y manifold gains being removed by the ECU...

If you are going to sell a tune showing proof is the best way to do it..

I'm not asking for code just the normal dyno sheets any car guy would ask to see before purchasing anything that makes performance claims...and then have them fade as time goes by without a warrantee voiding reflash tune...

Again I'm not knocking the GIAC reflash, I would just like to see more than just a wide open dyno sheet...I don't mash the peddle every time I exit a corner in the canyons so it's that tip in response data that I would like to see, GIAC vs stock.
When being trolled by fools and responding is not abrasive the way I see it.

I joined to learn something, not to make friends with sheep or those that correct my spelling.

At this time I'll just sit back and wait for someone to write an undetectable tune and enjoy the response and tone of my new exhaust..