I saw this awhile ago and have been wanting to get a pair for my dual N1s, they produce nice power but are a bit too loud just driving around town, especially coming home late. Apparently the ATS uses a pressure activated valve that will silence during normal driving but not hinder power output under WOT:

http://www.apexi-usa.com/product_exh...=217&pageNum=1

 

+1, I'd like to know the answer to this as well. I've been looking into silencers that won't diminish power and with this particular unit it seems like you'll be making little to no sacrifice. Even if I don't hear from people I guess I'll still go ahead and purchase this part. I already KNOW I'll be getting pulled over if I come across a cop on the streets so I guess anything will help .

BTW - I have an HKS Ti Racing Exhuast and YES it's loud . It's not too bad for me, but I really think other (normal) people will HATE it!

 

I have these on my Apexi N1 Dual:

http://www.apexi-usa.com/product_exh...=182&pageNum=1

They definitely reduce the noise, which was my main concern, as I didn't want to draw too much attention and I was setting off car alarms left and right when I drove by them when they were parked. Also I just remove them when I go to the track. Very simple to install and remove. I am not sure about the effect on the power, but it wasn't anything that I found to be too noticeable (at least in my car).

 

I've used that on my GT Spec exhaust and it makes a huge difference in power. But then again I'm running a large single turbo setup with race port. It creates alot of back pressure but it does lower the exhaust db substantially. I had it on for about 20 minutes and took it off. I just turn up the radio! :-)

 

What about the Active Tail Silencer? Anyone use that specifically? From their website it says that the difference from "dyno numbers" with and w/out the silencer are nearly identical. If nobody has this, then I guess I'll be the first to post regarding its potential. I'll be having my car dynoed in 2-3 weeks and I'll ask my tuner to run the car with and w/out and hopefully I can have some real numbers for everyone. Later.

Rizwan

 

Theres also this by A'PEXi....

http://www.neweraparts.com/partinfo.jsp?pid=218

A bit more work to fit, but user adjustable, looks rather good

 

If anybody knows TRISPEEDFD3S he has the apexi exhaust on his car. He sent me a video clip and the exhaust sounded really good. So hopefully he can post the clip.

 

Anyone using an ECV? The one scuttlerx mentioned or anything like it? How does it perform?

 

I got my pair of ATS's and installed them today, seems to quiet it down a whole lot but when i floor it I'm not sure if it as loud as before like they state, I'll have to do a back to back test. And only a dyno would prove that my power is the same, however it does seem to pull just as hard.

-Andy

 

I use it for daily driving. Peak HP on stock twins is the same, but right after peak hp the power drops off real quick as opposed to a fully open 3" exhaust with no cat.

I would suggest making it easy to take off for any real spirited driving.

 

So do you have dynos before and after you put it on? Heres mine before I put it on, other mods are still the same:

 

I rolled my car 4 times on the weekend.

 

only that software program that calculates hp through datalogit logs. Its not accurate for hp but it does very well with a side by side analasis if you use the same road. I dont have any logs right now and my car currently is in a thousand peices.

 

Damn man how did that happen??

 

cops were chasing me i crashed into a van and rolled both cars fucken pigs dont know when to give up, they chase me from city to my suburb which is 30km give or take i lost them 3 times and 2 minutes from my house they caught up to me and i had to gun it, i dont like giving up without a fight and i crashed my baby.. no insurance ill post some pix when the cops release my ride.

 

Wow, I think this is where the thread turns in to a trainwreak. I'll start by calling you an idiot. I only hope you are joking.

 

Damn man I dunno about Australia but in the US I heard they throw you in jail for runnin! Good luck on that one, hope the FD can be repaired too.

 

Hmmmm... wow is all I can say.

 

Yeah that's brilliant. Clearly it's the cops' fault for not knowing when to stop chasing the likes of you...

 

This is the second FD Ive totaled... but the cops did one thing wrong which goes in my favour, the last chase, they chased me with no siren or lights and thats againts regulations so well see how it goes, and as for you mr aeka gsr u dont know the circumstances so dont throw remarks like that, I wasnt looking for trouble, the FD cannot be repaired but I have another mint rolling body in my garage, hopefuli this one will last.

 

dude, thats nuts! A real car chase! too bad you got messed up.

 

Darwin, where are you?

 

^^ Good call. I thought about this one when I had a zx6r... run from the cops and maybe die, or take a ticket for doing something I shouldn't have been doing in the first place. It's a tough one.

 

Youre a ******* idiot x 2

 

x3

Damn, what the hell is wrong with people?

SNTP: SYTP. YTP YTP YTP!