Has anyone got dyno proof of the gains going to a full 3" exhaust?
06-13-2005, 04:19 PM
#76
Race Director
Hosrom, on all of the exhaust parts from Porsche there is a part number. Unless you find a part number on the pipe where there probably was a cat or muffler it is very likely that it is aftermarket which is fine, having a test pipe isn't something all that exceptional.
I really don't understand how you can be so sure of that your car came like this from the factory unless you are the first owner. The reason why I wrote down that the later cars have an extra muffler was to cover the different configurations.
It seems that you love spreading info and that is great, but the info is worthless if it is untrue and it hurts the 951 crowd if there are to many rumors and "internet gurus" floating around.
This whole thread is a good example how an interesting thread about the efficency of going to 3" has been ruined by sidewinding arguments about wether or not your car is stock. Very similar to how interesting turbo threads turn into a flame war as soon as you show up and act like a besserwisser.
You seem to think that it is important that an answer is coming fast and that you get some sort of credit for being the first with an answer. Myself I am very careful to provide info or help about things that I have no experience with, it is much better help to point in a direction where knowledge can be found instead of repeating something until it becomes the truth.
Over and out.
I really don't understand how you can be so sure of that your car came like this from the factory unless you are the first owner. The reason why I wrote down that the later cars have an extra muffler was to cover the different configurations.
It seems that you love spreading info and that is great, but the info is worthless if it is untrue and it hurts the 951 crowd if there are to many rumors and "internet gurus" floating around.
This whole thread is a good example how an interesting thread about the efficency of going to 3" has been ruined by sidewinding arguments about wether or not your car is stock. Very similar to how interesting turbo threads turn into a flame war as soon as you show up and act like a besserwisser.
You seem to think that it is important that an answer is coming fast and that you get some sort of credit for being the first with an answer. Myself I am very careful to provide info or help about things that I have no experience with, it is much better help to point in a direction where knowledge can be found instead of repeating something until it becomes the truth.
Over and out.
06-13-2005, 08:34 PM
#79
Three Wheelin'
I said it before and I'll say it again, take a look at ANY other turbocharged car in the world. Look at any import forum and you'll find plenty of proof. I don't see how this is even a question any more. Pretty much everyone moves up to a ~3" exhaust on anything under a ~3.5L turbocharged engine. It makes more power. The stock 951 exhaust is pretty efficient as far as stock exhausts go. However, the larger diameter alone will still make a worthwhile power gain. No dyno proof of my own, just going by dyno proof of pretty much EVERY other turbo car on any other forum I've been too. The WHOLE world can't be wrong. 
06-13-2005, 09:27 PM
#80
Race Director
Originally Posted by Porschefile
I said it before and I'll say it again, take a look at ANY other turbocharged car in the world. Look at any import forum and you'll find plenty of proof. I don't see how this is even a question any more. Pretty much everyone moves up to a ~3" exhaust on anything under a ~3.5L turbocharged engine. It makes more power. The stock 951 exhaust is pretty efficient as far as stock exhausts go. However, the larger diameter alone will still make a worthwhile power gain. No dyno proof of my own, just going by dyno proof of pretty much EVERY other turbo car on any other forum I've been too. The WHOLE world can't be wrong.
Well, I dynoed a car yesterday that with it's very loud sidepipe setup gained one (1!) horsepower compared to the Laguna Seca setup that has a street car sound level. Another relevant side is the intake, not the same as an exhaust but it is also about flow and on a 996 it is very hard to beat the stock setup.
Exhaust and intakes are interesting since the butt dynamometer is disturbed by how cool a car sounds.
its soo true..
06-13-2005, 10:09 PM
#82
Race Director
Thread Starter
More good points Anders. Its good to see someone could post a dyno result which looks like the gain is around 25WHP. I am still going to test the back pressure and try design something unique if possible and then look at cam options!
06-13-2005, 11:49 PM
#87
Race Director
Thread Starter
Originally Posted by hosrom_951
So, where wold the part number be on the testpipe area so i can take a pic of it?
06-14-2005, 12:27 AM
#88
UAE Rennlist Ambassador
Rennlist Member
Rennlist Member
Originally Posted by sweanders
On the outside.
Originally Posted by NZ951
Can you seriously take your issues off this thread. Start another one about part numbers if you need that information or PM someone.
06-14-2005, 12:31 AM
#89
Race Director
Thread Starter
If a report was made for each of your bad posts, John would never get any work done. Unlike some, I dont cry like a baby each time something is annoying. I foolishly expected you to be mature and police yourself.
06-14-2005, 12:35 AM
#90
UAE Rennlist Ambassador
Rennlist Member
Rennlist Member
NZ: I never reported any bad posts in this thread, nor in the T04E thread just so you know. Since i have something interesting to prove right or even prove wrong, you don't even want to give me that chance.
If it suites you (and everyone) well, if i find the part number on the test-pipe and it turns out to be original, i shall PM Duke and Anders and not post it here since you are the thread starter and you are no longer interested in my posts (and i am sure others are also sick of me by now).
Sorry about this, now i have to go and prove myself right/wrong.
If it suites you (and everyone) well, if i find the part number on the test-pipe and it turns out to be original, i shall PM Duke and Anders and not post it here since you are the thread starter and you are no longer interested in my posts (and i am sure others are also sick of me by now).
Sorry about this, now i have to go and prove myself right/wrong.