"At least on paper" is a very good point, as there are quite a few marketing numbers thrown around that might not be backed up with a trap speed. However, we are always honest and try to be conservative with our power claims. Our goal is for the power numbers we list to be completely reproduceable for the customer in almost any envinronment. Our power gains over stock are among the best when comparing numbers on the same dyno with similar hardware. Actually, we have had a few customers lured away by "marketing numbers" and promises, only to be disappointed by the actual outcome.

To get back on track with the original posters question....

We find that with the larger exhausts on the market, our version 2 software is limited by the factory intercoolers. Custom tuning in this case would not be beneficial as you are dealing with a hardware limitation, rather than a software variance from exhaust to exhaust. On the other hand, we have found some smaller exhausts on the market that tend to ramp up a bit faster and choke a bit up top. For these we have files available to alleviate overboost throttle closure and A/F enrichment due to excessive backpressure. The key in this case is having multiple files available that will work properly with a multitude of exhaust systems.

When adding intercoolers we have found that our Version 2 intercooler files can get close to the limit of the factory fueling system on pump fuel, and max it out on race fuel. This is with a leaner AFR curve and more boost which is optimal for 100+ octane (RON+MON) fuel. Items that also switch when the race mode is activated. We have even calibrated software for customers who wish to upgrade their fuel pressure regulator in order to make even more power (with exhaust, intercoolers and OE turbos).

Now, in the case of someone like QUIK911, who had just about everything you could put on one of these cars short of a full engine build, he benefitted greatly from a custom tune. Though we offer many options, we definitely understand that people like to add unique hardware to their Porsche. We encourage anyone who feels like their hardware combination might not be supported by one of the options we have to contact us for other options.

 

[quote=Austin@GIAC;2922376Now, in the case of someone like QUIK911, who had just about everything you could put on one of these cars short of a full engine build...[/quote]

LOL, Randy

 

Who doesn't like being sideways in 2nd gear?

 

My personal opinion is that a custom tune could be beneficial if you are not checking your AFR regularly. Especially in Hotlanta (I mean HOT).

Regarding the topic covered above. I have AWE parts and love them. I wasn't so impressed with GIAC tune. The tip-in was so touchy I thought that my clutch was the issue. Not so, I have EPL's tune now and it is silky smooth. I also cannot understand why GIAC doesn't have a standard K24/18g flash if they were tuning the entire fleet of 959's that came stateside.. So you tuned 1/2 of the world's rare Porsches but you don't have a tune for a 18g car that you could offer a customer??

Just my .02 and not meant to kick dirt on anyone, this was just my personal experience.

 

We have found that many who run K24/18g turbos prefer to do so with factory fueling components. As we are able to max out the fueling system with basic K24s, adding K24/18g turbos to the mix with a 5 bar FPR and factory fuel injectors is simply not optimal. We have been exploring supporting the turbos with 60# injectors, though. I should add that your increased smoothness (not saying EPL is not smooth, simpy that our software is smooth also) is likely due to the increased lag from the K24/18g turbos, not because our software is punchy (unless you had a LWFW without our LWFW fix).

 

Austin, those are all valid points. I think there are plenty of arguments against or for a fuel system. Tony and team dialed my tune back some with respect to boost to allow for the lack of injectors. I would say that there are plenty of reputable tuners that are selling packages with 5 BAR FPR including AMS with their K-16 kit.

I heard from a few guys that their cars had the tip in drivability with the GIAC tune as well. No doubt you guys have a solid track record, I was just stating my experience to date.

 

Why don't we have a "Tuner Shootout"

- Designate ONE car for the experiment
- share the specs with all major tuners. Bring your custom tunes for the car to the event.
- Put it on the dyno for each tune
- Have one appointed driver run each tune 3 times for the following.

0-60
60-130
1/4 mile run

- Get a hot flag girl who will of course be topless
- Post the results.
- Everyone gets to meet each other and show off their goodies while making new friends.

There we go. World Peace solved.

 

I just purchased 07 TT with 900 miles. It has upgraded brake system. I have an appointment with the Porsche dealer to install the Tubi Regular and GIAC Tuning next Wed. I am also thinking about getting latest Champion Intercooler. My car has the Porsche certified to March 2013. Should I do the Tubi Race Version at this time?

Someone also mentioned on diff. blog ( I was accidently in 997 instead of 997 TT ) that he upgraded his Turbo and change out his clutch and has 700 HP. How expensive is to do the turbo upgrade and clutch replacement? I am not sure if I want to replace that many almost new parts. Car now has 1200 miles on it.

Any advise is welcomed. <!-- google_ad_section_end --><?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>

 

07 977 TT with 1200 miles.<!-- google_ad_section_end -->
<HR style="BACKGROUND-COLOR: #ffffff; COLOR: #ffffff" SIZE=1><!-- / icon and title --><!-- message --><!-- google_ad_section_start -->I just purchased 07 TT with 900 miles. It has upgraded brake system. I have an appointment with the Porsche dealer to install the Tubi Regular and GIAC Tuning next Wed. I am also thinking about getting latest Champion Intercooler. My car has the Porsche certified to March 2013. Should I do the Tubi Race Version at this time?

Someone also mentioned on diff. blog ( I was accidently in 997 instead of 997 TT ) that he upgraded his Turbo and change out his clutch and has 700 HP. How expensive is to do the turbo upgrade and clutch replacement? I am not sure if I want to upgrade the turbo and clutch for the car that is almost brand new. Car now has 1200 miles on it.

 

I just found out there's a local shop with a 4 wheel dyno and for 250 bucks I can get a few runs in. When I mentioned that I have a 997tt he said that I required a "dyno pack" which is necessary b/c the car "knows" it is on a dyno in sport mode and won't work correctly without a "dyno pack". Anyone heard this before?

I'm going to see if he can compare stock regular and sport and then Proto tune regular and sport to have 4 runs (in the hour that I have available on the dyno for the money). Hopefully he can also log the a/f ratio. Can they also datalog the timing here? Is there anything else I should ask them to log or that can be logged. Anything else I need to know about this? thanks

 

Sir, you just read my mind...

 

Dynapack is a different type of dynamometer that mounts individually to the car at each wheel in place of your wheel/tire. For more, search for dynapack as the pictures will explain it better than my words.

Any correctly operating 4 wheel dyno should be just fine for your car. I can't understand why they would say different. Look at how many tuners use Mustang 4 wheel dyno's and none boast about using a Dynapack setup.

 

Excellent idea.......crickets......

 

From what I understand, the important thing to watch out for is that the front rollers and rear rollers on the dyno should be synced for speed. Normally, that means a belt drive connects the front and rear rollers together.
Otherwise, you risk damaging your car at worst, at best, the car will refuse to dyno (power drop off).
If the dyno shop you are using does not have this feature, you may be lucky and get a decent run, but is it worth the risk?

 

Good point, Karim. I'm not sure it's worth the risk to get a dyno measurement just for fun. Todd said it was safe as long as the people knew what they were doing and had experience, lol. I did read about the dynapack and it seems pretty cool. Guess I'll think about it and ask them more questions about their experience with 997tt cars before I proceed.