Ok well I'm currently in the process of getting my ATLP tips powdercoated, which means i'm running my exhaust without mufflers. Basically all exhaust gases are coming out of the y-pipe underneath the trunk.

My question is this: Is this bad for the car? Other than the loss of power, can this be doing any permanent damage? My guess is but it's better to ask...

On a side note, i've been having a LOT of fun driving without mufflers. Car sounds like a damn jet.

 

I dont think your losing any power, if anything, your gaining. I don' t think any damage can happen except you get a ticket for loud exhaust lol. You should take a video of what it sounds like.

 

loud exhaust? more like lack of exhaust. lol you'll just lose some torque.

 

No i definitely felt a loss in the low-end, but I might've gained in the high-end...not sure though.

I'll take a video tomorrow. Honestly it sounds INSANE.

What i love about LA is that a loud exhaust is just a $15 fix-it ticket...

 

Really? i thought out there it was a major concern.

 

Well...it depends on the situation, whether the cop wants to be a total dickhead....whether you're at a ricer meet showing off....

Usually it's a fix-it ticket, just need to pay ~$15 for court fees.

My school cop didn't care at all when I revved my engine for him today. He just laughed...if only all cops can be like him...

 

nah it doesn't damage your car at all. your actually losing torque and gaining top end power. so your pretty much slower at low speeds and faster on the highway...

 

haha, seriously man. sound clip that bad boy and let us hear it!

 

Anyone know how I can embed youtube vids?

 

Nvm got it. Second one's better.

http://www.youtube.com/watch?v=2Sf_Fe3TxfY

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

 

holy shit... sounds like drag racer lol, not bad tho

 

DAMN i like how it sounds.
What color did u pick to powdercoat your mufflers?

 

JDM Lime Green

 

sounds like a beast lol

 

Hahah, funny this is how my car is going to sound with the exhaust cutout hehehe

 

You're not worried about losing power??

I would run my exhaust like this all day but I can't stand the loss in low-end torque.

 

It's all 100% in your head. You may have gained a few top end hp making the low end feel weaker. Your primary cats are doing a great job at providing backpressure whether you want it or not.

 

OMG, I want mine to sound like that...humm wonder what glass packs or some flowmaster super 44 series would sound like... LOL

 

I agree with this 100%.

Be careful though. If you try this without at least the cat installed, the decreased backpressure may cause exhaust valves to burn up due to an excessively lean mixture.

 

you will lose MPG though...

 

So you're telling me that I can run completely 2.5 inch straight pipe from my stock 3rd cat with no loss in power? What about if I get the RichieV6 J-pipe and res test pipe?

I wouldn't mind selling my ATLP and going custom now...

 

Totally. Especially from the 3rd cat back, you could go straight 6" piping and it wouldn't hurt anything lol.

When you change things, especially exhaust, it messes with your perception. I've changed things on my car where it felt faster for sure and then ran slower at the track.

 

If you did the J-pipe and all 3 test pipes, there's a chance of losing low end but chances are you're going to gain power everywhere in the powerband. I'm a little scared to say it for sure won't hurt low end so I'll say it's not likely. In fact, I'll say it's more likely you're going to gain low and top end. How's that for confusing?

 

Errr, I change my mind every 10 minutes about whether I should keep it like this or not....but it seems like the cons outweigh the pros.

I mean, it is literally impossible to hold a conversation with the person sitting in the passenger seat. I had 5 people in the car yesterday and the entire time they were complaining about how the exhaust was giving them headaches and a massage at the same time lol.

Pros:
-Fucking loud
-HP increase
-Fucking loud
-Everyone turns around whenever I hit the gas.

Cons:
-Cops, cops, cops
-Inability to hear anything, especially with windows down.
-Scares small children and dogs (hehe)
-Worse MPG from always flooring it.
-Everyone turns around whenever I hit the gas.

 

That sounds positively insane. I couldn't live with it, but it sounds EVIL. Wow.

 

Oh yea, this also reminds of the time a guy I know took the four mufflers off of his 2006 M5 and ran straight pipe from the cats.

I shit you not, first time I ever heard it I was about a 1/4 mile away on the other side of a building and I thought a jumbo jet was coming in for landing right above me. I am not joking. I literally thought that.

 

If you love it

Look into the quick time performance exhaust valve w/ e-cutout and electronic controller

The valve (small butterfly) and the cutout were $200 and the electronic controller was $100

I am going to use a richie v6 racepipe, cutout the middle and replaced it with the 2.5" cutout, I'll have pics later on so you can see

Cutout = open from the jpipe back

SOUNDS LOUDER THEN WHAT YOU GOT

 

Link me brah

 

Is on ebay meng I got mine thurr

(Imma take some pics passed sunrise)

 

The best of both worlds! At the flip of a switch you can change the exhaust to fit your mood. I had one on my GN for a while. It's the funniest thing to have people rev on you at a light and then you open the dump and see them do a double take.