It seems then, Steve old boy that the Battle of Stirling Bridge was for naught. I could understand a 105 db limit for a residential neighborhood but we are talking about a racetrack here.

Ironically, Texas is the last refuge of Scottish style freedom

 

Sign of the times i'm afraid

Jeez... I'm now waiting on Jimmer to posts another dodgy pic of me in my kilt , common the William Wallace

 

Thanks, Mark.

 

Man, Until Mark posted that link, I'd forgotten about all those suppliers overseas in Asia. about 8 years ago I made the mistake of thinking seriously about opening a tuner shop with storefront and warehouse to sell parts out of & mailorder/ Internet... My wife and I had been approved for the business, but I was scared, quite honestly. The market is so fickle that I just didn't want to risk everything, and I'd have had to give up my current career, which has since turned into a lucrative business for us.

Anyway, we got bombarded with solicitations once we put our names/address/phone out there. Everyone that made and sold a product wanted to add us to their wholesale distribution list and "can we set up an account for you?" was the norm...

If you do a search in Alibaba in the Auto category, then engine sub-category, then exhaust sub-category, and search on PORSCHE, you'll see lots of "stuff" sold by some of our very own vendors!

This is just to funny!

Mike

 

Thanks!

My particular unit per Tym was an early one he hand made, like #1 or #2 unit ever. Not sure what is in it as it is covered, but he told me no expense was spared on the quality of the cats, etc.

Had you been around, I'd have called you for a unit I suspect! I really thought Kevin's was awesome too...sorry to hear about the issues he feels he had with it.

For me, sound is important as the car for me is a "fun thing" not a "tool thing" on many, many levels. I love to get max power, don't get me wrong, but if it were silent it'd be worse even if that gave me 50 more hp.

Sorry to leave BBi off.

Jeff

 

Mike i agree , i noticed that on alibaba a long time ago...people need to open their eyes.

 

What we believe to be causing issues with certain modified 996tt's is the insipid knocks. We believe the 996tt knock system identifies harmful knocking on the stock motor in the windows and frequiencies for the same motor. However, we believe when modified in certain ways insipid knock occurs in areas the stock knock system is not equipt'ed to handle.

If we are right, I'm sure the system will be made available ....... but not by myself. I am strictly doing this for the sport. I am sure other's who are in the business will pick it up and run with it.

 

CJV , when will you have your motor in the car and running ?like driving it on the street.

 

Thanks to all of you for your input on this difficult choice...

I have decided to go with:

Speedtech X-Cellerator 2 1/2" system, 100 cell cats, unpolished with ceramic coating and twin tips
EPL K24 Tune from Tony
Billet Diverter Valves
BMC Filter.

In a couple of months I will go to the 18G upgrade, clutch and a 5 bar FPR and that will be it.. No need for more power than that for the track...

Great input from everyone...

 

Interesting find, do you know if one can use a 997TT sensor in a 996TT? Same plug?

 

Not from what we can see.

We have not gone down that route as we believe at some point the 997tt system will have it's own issues.

Our Link system will not use microphones. It will tap the cylinder pressure of each cylinder. The frequencies and windows will be adjustable. We will be able to monitor major as well as insipid detonation.

 

It could happen is as little as a week or it could take longer. It depends where we decide to stop or hit a real high wall. We are a lot farther along than is being posted. You may have noted in our build thread that I said the reports would now be coming out in time delay. https://www.6speedonline.com/forums/...-post3176.html

Still playing with a lot of motor management changes and want to exhaust all areas of concern with the boost levels we have the ability to enter. This motor makes at 1.1 bar what the current monsters make at say 1.5 to 2 times more boost.

Our current issue isn't how much boost she can make ....... rather where to safely limit the boost so as to preclude the motor from coming apart in a lot of pieces. Our main concern is what the case can safely handle. Absolute control of detonation is critical. We have no doubt this motor has the potential spin the tires at 3500 rpm's in sixth gear.

 

The better part about the system is the direct cylinder injectors. This is why they were able to boost the compression. You might check the injector size difference.

There really isn't any difference on the bottom end. The heads as in direct injectors and the system from the throttle body to the heads is where the real difference lies.

If this conversation is to continue we need another thread as this is way OT. I apologize.

 

Well I didn't believe in paying a lot for an exhaust as these Porsche prices were silly. Yes they are a lot of work without a JIG made as it is a pain to take it on and off if your doing a one piece exhaust. On the other hand, its not rocket science.

I bought a couple Borla straight through 3" inlet and outlet mufflers with I think a 5" round cylinder and probably 15" long. I got 2 of them. I also picked up 2x 180 deg 3" bends and I think 3x J bends as well (I forgot the exact number). Some O2 bungs as well.

I good tuner by my house has done a lot of custom work on my Supra and can weld with the best of them. Parts weren't expensive but what is a good welded/fabricator worth?

My guy hooks me up but I asked him if he could do a mass production (10 units) at under $1500 and he said without a doubt if he made a JIG.

He cut the Borla mufflers in length to fit the porsche and rewelded them back together, this could have been skipped but I bought them too long on accident originally. Welded the 180 deg bends on the 2 mufflers and then cut them, weld them into a X design such as Markski's design, etc...We only used 2 mufflers instead of the four that Markski used, and no cats.

Final result: Very quiet. In fact surprising quite at idle but when you rev on it, it gets nasty! Very little drone. I also used some ceramic high temp paint on the whole thing which may or may not have any effect on the sound. X design crossover is a must for our engines as it changes the sound to an acceptable sound.

Old Exhaust: AWE Straight pipes with no cats, they sounded insanely loud and since the 2 banks of cylinders didn't cancel each other out, it had so much drone.


What I learned: Its a lot of work without a JIG and considering it has to fit perfect in a 996tt, you better be good! I would say if I were doing this again. I'd be willing to pay a little more for a good exhaust such as Markski's which has all the characteristics of a great exhaust system and looks good quality. By doing this exhaust as a one time only project, the learning curve will be a bit steep and may be worth a little more for a prefab one but definitely not some of these crazy expensive ones.

 

here you go...
this is my custom muffler design with Full 3 inch all the way.... no reducers near the tips.... this is on a car with big headers, external 44Tial WGs and my custom 30R type turbo( big). No cats either...

http://www.youtube.com/watch?v=o0x69KiDG3I