Hey Guys, I just recently got my 997 Turbo and after 500 or so miles I installed an FVD exhaust system with cats, it ran fine the first two weeks, but I just got a check engine light today. Would the exhaust system be the cause of this or should I actually get my car checked out?

If the exhaust is the problem, what is the solution? I was also thinking about reprogramming the ecu, would this solve the issue?

Any help would be greatly appreciated!

 

Hi Sayegh87,

It is hard to know the cause with out a scan. You may want to invest in scan tool or a trouble code reader. Durametric makes a fairly comprehensive one for enthusiasts that want to monitor their 997TT's health. It will read codes that generic OBD scan tools might not catch.

http://www.durametric.com/

Good luck.

Andrew

 

Hey thanks for the quick reply Andrew. Which kit should I be getting for the scan tool? the professional kit or the enthusiast package?

Also if I do find out what the issue is and it does turn out to be from the exhaust system, what can I do?

Last thing is regarding your ecu upgrade, how come you only manage to gain ~30 hp, while everyone claims 50hp and more?

Thanks!

 

Get a set of o2 bung extensions, they move the sensor away from the exhaust flow, they run about 20$ at an ebay store. I'm sure it's exhaust related, as the 08s are a lot more sensitive than 07s.

 

If you think you will own more than three porsches you can get the proffessional version of the durametric, otherwise the enthusiast package is fine. The Enthusiast package is limited to three VIN numbers, but actually for the price you could probably purchase it twice to cover six cars for less.

As far as the exhaust you may want to determine the issue first, it may be something else entirely.

I really appreciate your last question, because I did not know there was a perception out there that we gained only 30hp on the 997TT platform. Our pump gas gains run 35 to 70 hp at the wheels or 40 to 80hp at the engine. The range covers the upgrade gains when applied to different applications and pump fuels. With out any other hardware mods on 91 (r+m)/2 octane or 95 RON the gains are about 40 hp at the engine, but I do not think that any other company really even advertises this combination as it is not the most friendly to power on the 997TT. With an exhaust on 93 (r+m)/2 octane or 98 RON the gains are about 60 hp at the engine. Run our inter-cooler file with a good inter-cooler that has low pressure drop and keeps temps below 50 degrees and you will see 70 to 80 hp at the engine. Our race gas mode with a good exhaust, intercoolers and 100 + (r+m)/2 octane you can get up to a 150 hp gain. There is a 997TT on the following quarter mile thread that ran a 10.99 @ 127.1 with a GIAC race gas program accessed via the GIAC flashloader handheld device. I believe that is one of the top times for a stock turbo 997TT.

https://www.6speedonline.com/forums/996-turbo-gt2/55163-6speedonline-1-4-mile-60-130-mph-standings.html


Good luck with the light. Please do not hesitate to call us if you have any other questions. 949-724-0014.

 

This is also true.

 

sayegh87,
Sorry to hear about the CEL (almost always an emissions "issue" ). It can happen but you will be able to resolve this with just a little patience. The emission sensors are VERY sensitive and can get confused (usually post-cats) and set off a CEL (regardless of exhaust manufacturer). Your CEL is yellow, right? If it turns red or starts flashing it requires a more serious response. This topic can be found in more detail with a search of the forum. Resolve this first before ECU reflash.

I agree with the others. First get a OBD2 hand held code reader/clearer (a must for us enthusiasts I think - one trip to the dealer for a code reading cost the same price as the hand held). They come with different options but for about $100-150US you should be able to get a good one (Durametric is good. I have an Innova Scantool - works great). You then can collect the required information re what's causing the codes. Bung extensions are not expensive and a first step in resolving this. Your tuner, who installed the exhaust, will probably be glad to assist you problem solve and resolve this. I've been through this myself, so be patient and do a bit of detective work. It is also possible, but not probable if you used a professional installer, that there may be a leak somewhere or a damaged O2 sensor - but not likely. Or it could be a bit of bad gas or gas cap - all common causes. I only speak from my experience with the same issue which was resolved and never returned. You will solve this, no worries.
K.

 

Sayegh87,

Kindly check your email, we can solve this for you. As all of the posts above wisely mentioned there can be a number of factors at play here. I sent you an offer for the software, durametric scanning software and the O2 sensor extensions. The email also included many of the exact statements that are above so you have second, third and fourth....opinions that are very valuable.

Thanks to everyone that posted, another shining example of the tuning community working together to help one another. We will gladly work with you to solve this. Not to mention we have a full time Porsche Master Tech that is available M-F 9am to 6pm to walk you thru any solutions that you choose.

Thanks in advance for your time,
Rhonda

 

sayegh87,

Let me first start off by saying that we were G.I.A.C.'s first master distributor. They have played a critical part in the success of A.W.E. They are also the most highly decorated tuner on this forum with countless shootout and independent test wins.

They offer full independent switching unlike anyone else, and program the DME just as Bosch would do it. They don't use third party tools either.

These are just a few of the reasons why we work with G.I.A.C.

Regarding your question of only 30hp, we that is about all you will see in non-sport mode. However, when the car is in sport mode expect to see gains of 60hp. Couple that with an A.W.E. exhaust and you can see gains as high as 80hp!

Please visit our web site for more detail.
http://awe-tuning.com/pages/shared/p...s&IL=997TTgiac

Take a look at this dyno plot as well:

 

Hey Mike, thanks for the reply. I have been working with Marc over here in Cambridge, he is extremely good and knows his things and has recommended your products along with GIAC from the start.

My question is that how come with Evolution's ecu they are seeing gains of 70-90 depending on which fuel is used, while others are only gaining 30 hp.... are you giving out wheel hp and them crank or... I would greatly appreciate it if you would clarify as I need to get an ecu upgrade really soon along with headers.

Also once the ecu is tuned, do the turbos spool up faster or is there a slight delay?

 

Marc and I go WAY back. He is a good person and VERY intelligent. He is my go to guy when I have obscure suspension questions...

Sometimes it can be very tough sifting through the marketing when it comes to software.

Many companies advertised gains are only on race fuel, but they fail to mention that.

Our philosophy and GIAC's philosophy is to show real world numbers if any client were to drive into a dyno shop and do a before and after dyno on PUMP FUEL. In our case, that is 93 octane.

No trickery.
No gimmicks.
No false claims.

Many companies don't get dynos because it is not that they can't afford it, it's because they are afraid that many of the products they sell would never make power if tested...

We on the other hand engineer and manufacturer bolt on kits. A dyno is must. When you have a dyno you are working to a higher standard. You now have to show your clients they are getting what they are paying for. It's a great way to keep companies honest.

As for the wheel/crank question. ***For the record, all of our advertised numbers are to the crank***

This is industry standard. This is what Porsche and all of the other OEM's are doing.

I am going to say this one final thing.

Just like any of our other products, we offer a 30 day money back return policy. If you don't like it, return with no questions asked. Marc can flash you back to stock just as easily as uploading the GIAC.

GIAC also now has a new pricing structure that was rolled out a few days ago.

$3000 (includes pump gas performance mode, stock mode, and a free handheld device)

 

Thanks for letting me know. Also with your headers and ecu, what gains would I be seeing? I have a check engine light issue, with the GIAC software, will I be able to have that removed?

THANKS!

 

I am not sure I follow. I thought you did not have any programming at this time?

 

Sorry I just read that and it seemed confusing. I do not have any programming at the moment. I was asking just what the gains would be with your ecu and headers? Also would it clear the check engine light issue I have (I am pretty sure its from the O2 sensors).

 

LOL. Ok, that makes more sense.

I can't comment since I don't know why the light is on in the first place.

Can you PM me or email the codes that are being thrown by the car? Maybe stop by Marc's shop and have him look at it?

I will call him on my way home and talk to him about it.

As for the headers...

My professional opinion is would be to skip the headers and do the intercoolers first. You will see a more noticable gain especially in the summer months.

The stock intercoolers are inferior and due to the sensitive nature of the car, proper cooling is a must.

However, if you want to do the headers first, you will see another 12hp over and above 80hp you will see with our exhaust and GIAC software.

You can read more about our intercoolers here:
http://awe-tuning.com/pages/shared/p...ttintercoolers