Borla Exhaust early development pictures
11-14-2006, 03:50 PM
#46
Originally Posted by b911s
No offence, but are you kidding about the weight difference in the the tips with the Borla fins and standard round tips.Take a dump before you go out on the track and you'll save the wait difference, or cut down on the ice cream, also invest in a lighter helmet, shoes, gloves, dont wear socks, no underware, remove all your carpet, strip out the radio, remove the passanger seat, rear seats, no sun visors, remove all the emblems from the car, turn signal stocks, remove all the bulbs from the headlamps and turn signals, all the plastic trim in the trunk, take out your side windows, remove the arm rests, headliner, interior trim, etc etc, I could go on and on. Look, these are mainly street cars that we occaisonally take to the track, even if you do it 20 times a year for DE events it's still occaisional. You cant bust these guys nuts for a pound or 2. If you were that worried about weight you would step up to the plate and spend the money and have a custom titanium exhaust made. Not preach to a mass manufacture about it. Actually you should really step up to the plate and buy a full blown race car. I dont think there is a professional driver in the world that could make better lap times with tips that weigh 2 pounds more or less. In addition those are Borla's trademark tips and I think thats one of the things that set them apart. Buy the exhaust and have custom tips to your liking made if you what a Borla that bad and dont like em.
Ok, well flame away, I can dish it out as well as take it. Just my .02. Plus this makes for better reading!
Ok, well flame away, I can dish it out as well as take it. Just my .02. Plus this makes for better reading!
Flame away? Who cares?
Last edited by JohnnyNarcosis; 11-14-2006 at 04:13 PM. Reason: had to puke a little
11-14-2006, 07:54 PM
#47
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Originally Posted by dmoney
David, how much true h.p. can we expect to see and what type of sound are you aiming for...
Thanks for your interest,
We are early enough in our development that we have not done any dyno work other than the stock baseline so I'm am not sure about what kind of power to expect yet and I wouldn't want to mislead anyone. I can tell you however that we will be offering at least two systems if not more for the 997. Basically they will fall into two categories (race and street) with, per the suggestions of this forum, tip options also (intercooled and non-intercooled).
There will be a big difference in power between the two systems because the race system will be for track/off road use only and will eliminate the catalytic converters. Obviously there is much restriction in the cats but federal law prohibits cat removal or replacement (even with hi-flo cats) so our street legal system HAS to work with the OE cats. You might be surprised to know that even systems that replace the factory catalytic converter with an aftermarket converter are illegal according to federal law (EPA).
The race system will be a full header back exhaust and will include our patented vacuum wave collector mufflers
http://borla.com/products/product_multi_detail.aspx?cat=5&type=67&desc=XR-1%26reg%3b+Racing+Exhaust|XR-1%26reg%3b+Collector+Mufflers
Borla vacuum wave collector mufflers are the mufflers of choice for many super-comp drag racers (see attached picture with Borla headers as well) and we use these mufflers in the crtically acclaimed header system we designed for the Ford GT (Ford racing) because they are highly effective with high output engine configurations and actually CREATE POWER. I am certain that the Porsche community will be pleased with the HP gains from this system.
The "street" system will include shorty headers and Borla's XR1 patented multicore mufflers while utilizing the factory cats. "Multicore" technology is one of the many exhaust patents Borla owns and it refers to any muffler with 3 or more cores. Using multiple cores allows us to increase the internal diameter of our mufflers (allowing greater flow) while maintaining a desireable sound attenuation. I am also certain that the Porsche community will be please with the HP gains from this system.
Due to the utilization of Borla's patents, these systems will also undoubtedly sound different (and hopefully better in your opinion) than any other system currently on the market. Of course sound is subjective and it's ultimately up to the Porsche community to decide if the sound is desireable. All we can do is use our knowledge of sound attenuation and 28 years of experience to design what we feel will be well received.
We DO NOT use multi-core and vacuum-wave technology in the majority of our products because it would be overkill. However, both technologies are highly appropriate for this application.
Please let us know your thoughts and thanks again for all of your assistance.
db
11-15-2006, 01:36 PM
#49
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Sounds great!
Re: lighter tips
well as a general rule of thumb for every ten pounds removed, add one horsepower. So 2lb's here, a lb there, a few hundred grams all over the car, etc... And eventually it'll begin to add up. The extra lightness and weight savings on the exhaust is more of a side benefit, something that's thrown in the marketing... Because again, a lb here, and there.... Eventually it begins to add up. Even more so if you pull carpeting and the like...
Or as you so eloquently put it, if you take a dump before you go on track....
If that weighs two lbs, and the tips weigh two lbs, you've just gained .4 horses...
Re: lighter tips
well as a general rule of thumb for every ten pounds removed, add one horsepower. So 2lb's here, a lb there, a few hundred grams all over the car, etc... And eventually it'll begin to add up. The extra lightness and weight savings on the exhaust is more of a side benefit, something that's thrown in the marketing... Because again, a lb here, and there.... Eventually it begins to add up. Even more so if you pull carpeting and the like...
Or as you so eloquently put it, if you take a dump before you go on track....
If that weighs two lbs, and the tips weigh two lbs, you've just gained .4 horses...
11-15-2006, 04:02 PM
#50
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It also matters where the weight reduction occurs, Bret...in the case of the mufflers it's in the right spot to improve handling.
11-15-2006, 08:04 PM
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Originally Posted by dmoney
David, thanks for all the info please continue to update us as things progress, im sure you will do quite well from us renlisters, borla has always been at the top of list from way back when... lets talk soon.
p.s. those borla tips look real hot...well done....
p.s. those borla tips look real hot...well done....
Appreciate the kind words!
11-15-2006, 09:59 PM
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Originally Posted by Chris C.
It also matters where the weight reduction occurs, Bret...in the case of the mufflers it's in the right spot to improve handling.
03-12-2007, 07:05 PM
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Originally Posted by jnsv
so david,
when can we expect the completion of the exhaust......do u have an approximate ETA?
when can we expect the completion of the exhaust......do u have an approximate ETA?
db
03-12-2007, 07:36 PM
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David...am holding off on exhaust purchase till I hear yours, which I prefer. Need sound clips and pics...Perhaps you could post on a separate thread when ready so as not to lose the new launch of your exhaust in an old thread...Can't wait till it's ready... 
03-17-2007, 11:50 AM
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Hey Dave - Any updates ?
Thanks
Matt
Thanks
Matt