Very cool mod, but I've had the same concern in the past, which kept me from doing this on my Maxima. Can anybody explain why copbait and I are wrong?

 

I was gonna do this on my fully built T78 mr2 before... but didnt know where to order them from. nice videos btw the opening and closing at idle is dope!

 

that is so tight. i was wondering, if those things fail to shut in front of a cop your skrewed.

 

If your car is N/A you will lose some power because it is true that you need some backpressure. Put those badboys on a turbo car and watch out, you will definitely take notice. My friend has that on his SR-T (375whp, enough to smoke my stock butt), and after he installed it we went for a drive, talk about decreased spool time and increase in power! its like a totally different beast when that flap is opened up. they also sell a plate to replace the motor/plate assembly for the winter so the motor doesnt freez up. we recently put the plate on but before we bolted it on i snapped a small vid of flames shooting out of the hole, pretty kool but devastatingly loud when open! i'd be very interested to see this thing on a turbo G.

 

I am posting just to keep tabs on this mod. I love the sound! I haven't seen these "Dumps" we used to call them since High School (1972!)

 

It may sound stupid, but i wanted to get a much deeper, much louder (much more illegal) sound out of my coupe. As a quick change, i just disconnected the exhaust at the axleback and spaced it out a little bit with some rubber (to prevent squeaking from bolts rubbing) it sounds a lot like yours, and i experience the same feel when driving. There is a lot less pull but in the high end its awesome, plus it sounds like a race car. Only problem is that if a cop drives by i have to park it like its hot. Anyways, all in all excellent mod, something i will be doing soon, to replace my ghetto-mod

 

I know I know, old thread. But I have a new question. I'm running an 04 6mt coupe w/ only a 5/16th Copper Iso Thermal, Z-Tube, and K&N. I LOOOOOOVE the way this sounds, but I'm on the fence on either

1. Resonated Test Pipes

2. Cutouts in the Stock Y-Pipe or at the cats

3. Cutout in the Midpipe.

I drag a decent amount, but I def. like this sound over the ricer buzz of test pipes (yes, even the resonated ones). I really want the sound but I don't want to lose too much power, and I know the cats and the Y-Pipe are most restrictive. So what do y'all suggest?

Thanks in advance.

 

id like to hear this driving on the raod.

 

i am real close to having this done after the cats before the y but i would want to drive around like this all the time. ( i am commign from a very very loud mustang

 

still no dyno #'s ?

 

Updates?

 

get test pipes with the FATTEST resonators and put the butterfly plate after that.. IMO in order for this too work you'll need another butterfly valve that blocks off the existing exhaust so you'll need 2 per pipe...

 

Wow, i don't remember this thread before. can we get more info? like the pics of the switch. if its a DIY install, (if you can weld) if the wiring instructions come with the E-cut outs? has anyone one else done this? more pics and vids please!

I would also like to know if there was an loss in power before installing these and after, because when the e-cut outs are closed it looks like there would be a major disturbance in the flow.

 

Cutouts are ok for the track. You should see a little gain. Your clips were not at load, and I can tell you from experience, there is not much worse of a sound on the street than cutouts, even with bigger motors (I had them on my LS1 for a short time, and the sound was bad, plus I did not gain anything at the track, so off they came). I think you, and everyone around you, will tire of the sound very fast if you open them on the street.

Here's the biggest problem. Assuming you'll only use them at the track, 99.9% of your driving will be with them closed. If you look at the design of the those cutouts, you are majorly disrupting airflow when closed. So just know that on the street during "normal" driving, these will most likely result in a decrease in performance.

 

^ yea thats what i was thinking, but i kinda of would be cool to have, for those time when u want to just show those fart can civics what a real engine sounds like! and they look at your exhaust and its stock.