I have three Dynamat Xtreme Bulk Paks(3x36ft^2) in my car now. Its still really loud. I don't really mind, it sounds exotic but ya can hear it 3 miles from my house and my girl friend said she could hear it like I was driving by

 

Now I'm not sure if I should go ahead with my TP install. Mine is no louder than any aftermarket exhaust out there but I have stock Cat though.

 

Every part from behind the seats in my car has been dynamatted and it doesnt sound nearly as loud as your car does daniel.

 

do you have resonated or non resonated test pipes?

 

resonated

 

hmmm... muffler maybe?

 

Goosegoose's car got louder when he did the heat wrap so he replaced the mid pipe resonator with this http://www.magnaflow.com/02product/s...ne=main&id=845

He said It really brought the noise levels down. It is also a straight-through muffler so it does not inhibit flow.


STS also tried to replace the mid pipe with a straight pipe and that made the car unbearable.



Edit:
It is really getting difficult to find information on this thread. I took the liberty to update the first page with some of the parts that current STS owner have used for others to use as a reference.

 

Heres a video of my car with non resonated test pipes, invidias, and I straight piped the OEM resoator that came from the factory mid pipe so it wasnt resonated at all. It is no longer like this but it was stupid loud. It got annoying after a few months.

http://youtube.com/watch?v=7XhDTWhfB84

 

hahah where? Resonated tips?

Thats a great video

Thanks athenG. That helps a bunch.

 

hey ahsmo, I was looking at your dyno graph, and like atheng said it looks like the power comes on kinda late. Did they do the dyno pulls without heating up the turbo first? Thats kinda what it looks like from the graph.

 

we think it could be because he has the Nismo Y-pip, mid-pipe and Test Pipes... That is a lot of space to fill up. He's upgrading to an EBC so hopefully his spool will improve.

 

That is possible. The other thing was that SGP really didn't want to use the utec to control boost so that may play a factor. I am going to install my HKS EVC VI boost controller, center pipe, heat wrap, turbine blanket, and motordyne spacer and then have it all re-tuned this march.

I need to find someone around my area to give me a hand. Maybe the exhaust shop that I go to will let me use their lift...The dance with the jackstands and that side pipe is really a pain in the ***.

That added pipe diameter(added cross sectional area) will slow the exhaust gases down which will factor into the total work which the turbine gets out of the exhaust gases. However, this really is not a large factor, the difference at 3500 rpm is negligible. The equation for work out of a turbine is more impacted by the energy in the exhaust gases which is why I am so concerned about controlling heat in the exhaust piping. Larger exhausts on the cold side of the turbine help people by reducing back pressure on the outlet of the turbine which increases the work the turbine gets out of the exhaust gases. Larger piping on the hot side of the turbine may increase horsepower by helping in scavaging exhaust gases out of the engine...allowing the engine to breath more.

 

https://my350z.com/forum/showthread....90#post5075190

STS compilation of videos and a great place to buy the kits from that you may not know about

 

Here is a video of my STS Z at an autoX. At the time I was running 4-5 lbs boost...now running 9 lbs at peak.

http://s229.photobucket.com/albums/e...rent=Movie.flv

 

that is the best STS video yet for our kit that really capture the sound. I have seen this video before and I'm glad that you finally posted. What have you done with the car and do you have any Dyno?

 

Yeah thats a cool video for sure. Nice driving. Post some info about your setup if you don't mind. Since there's only a handfull of us on here who have it we're always looking for more info!!!

 

group buy moved

https://my350z.com/forum/vendor-group-buys/331938-sts-rear-mounted-turbo-comp-and-group-buy.html

 

Sorry for the delay. I'm running 9lbs a peak boost (4-5 in the video) with a manual boost controller. Mods include Light flywheel, 6 puck clutch and a tune. Gauges include Boost, AF wideband, and EGT (I track the car and AutoX quite a bit and like to know what the car is doing). Other mods are Hotchkis sways, Wilwood BBK (6 pot and 4 pot). I have recently added Koni with Eibachs and Forged NISMO's with RA1's (done after the video). No Dyno pulls yet....High cost for bragging rights and no good dyno's in my area.

 

simply NICE

 

thanks for giving those lotus a run for their money