Straight Pipe?

[CzA]

Don’t full take any one’s advice here on loudness, just let it soak in and kind of get a general idea

Don’t allow any one persons opinion on loudness here have total merit. I have meet too many people who think something sounds awful, i found nice, too loud, just right, just right, too low.

Soem people ar every picky, and just don’t liek any noise, even at the cost of loss HP or just comfort. It’s all about you.

I run a 3 inch elbow back straight to a muffler. no cats, no resonators, and till the MTo kilsl me with tickets, ill never go back. Sounds great to me, and is still less lous than my Integra with a cat and sport exhaust ( turbo muffles a lot of sound).

 

[C-flo]

Im with you on that CzA, I have heard through out my time behind the wheel, many different opinions on sound and performance that I agreed with sometimes and disagreed with others. I guess the answer I was looking for would pertain more to my situation which is cutting off my muffler and leaving the rest of the pipe factory up to the turbo. It would be a temporary thing since I'm planning on replace my exhaust system anyway, but I thought for now I would free up some restriction.

 

[supradjza80]

Well I used to run the stock DP into a 2.5" straight pipe. Then I went to the BIC with 2.5" straight. Then to the 3.5" with a res and muffler. Then to a 3.5" without the res and muffler but the ability via Vband to switch it back and forth (muffler's to straight pipe). Straight pipe has sounded the best imo for them all. Here is a video of the sound of a few of them.

http://www.youtube.com/watch?v=Y4n6zm2qRu0 BIC and 2.5"

http://www.youtube.com/watch?v=rFPDdQ8c5DI BIC and 3.5 with res and muffler

C-Flo - with regard to exhaust backfires - I will i get a pop during shifts probably 20% of the time (my BOV is vented to atmosphere) and once in a while I will get the gun shot sound. I have yet to be told it shot out a flame but I would guess it does happen once in a while.

Anyway, straight pipes are cheap to try, way cheaper than the big name brand exhausts (even if you go through 5 iterations). So I would say try it if you think you will like it, and if not you can always go back to what you had.

 

[C-flo]

I appreciate the videos supradj, they do a lot of justice in regards to running a straight pipe, and i personally like that deep rumble. Lower RPM's almost sound like a 18 wheeler I guess I will give it a shot and probably buy a new DP and run the rest straight out. By the way your turbo sounds awesome when it spools up! what size is it?

 

[IJ.]

DRONE DROne and more droneeeeeeeeeeee
If you drive further than the local burger shop don't forget the

 

[TurboStreetCar]

Well I have to disagree with a lot of people on this. I run a BIC DDP to 3.5" straight pipe on my car and really like it. I also have V band at the end to switch to a muffler and do switch back and forth on occasion. Most people really like the straight pipe sound and you can really hear the turbo through the exhaust.

Vids

http://www.youtube.com/watch?v=F747dexc_r8

but whatever, you can think its rice or gay it really doesn't matter. Its still quieter than most NA performance cars with an exhaust system when the wastegate is closed.

Sounds Amazing. VERY NICE! :bigthumb:

 

[Poodles]

Soem people ar every picky, and just don’t liek any noise, even at the cost of loss HP or just comfort. It’s all about you.

That's the point, being loud when you will lose NO POWER for running a quieter system is plain and simple attention whore antics and you deserve every damn ticket.

I feel the same way about Harleys and NA cars running around with straight pipes. It's idiotic.

 

[C-flo]

Lol I used to say the same thing about these people running around in saturns, malibus, cavaliers etc... I'm not knocking these cars or what people do with them but cutting the muffler off to make noise on a car that you have no plans or aspirations of going fast in isn't my cup of tea. In my present situation though as I have stated before I'm hoping to take away some restriction through my exhaust system, and on top of that I would like to make some noise I mean after all my car is turbo charged and I can out run a lot of cars in my neck of the woods as apose to a stock malibu, cavalier, saturn etc...with a cut off muffler.

 

[Poodles]

Watch some videos of IJ's car and you'll understand.

Also, as already stated, cutting the stock muffler off is going to do jack squat. I should know, previous owner hacked off the back end of the stock exhaust on my car right before the resonator and ran it back to a glasspack with dual tips, it was loud and SLOW.

 

[supradjza80]

DRONE DROne and more droneeeeeeeeeeee
If you drive further than the local burger shop don't forget the

This is somewhat true, there are engine speeds where the car will drone, at 72 on the highway with both the 2.5 and 3.5 inch straight pipe it is barely louder than stock. At 45 going up a hill in 5th it is pretty droney. This can all be changed with gear selection, but truthfully it is not that bad. My car is taken on 500 mile road trips at least once a month. My system with muffler and resonator was actually worse at 72 mph than it is with the straight pipe (the piping route has been changed slightly leading to different harmonics I am assuming).

I drive past cops and driven right around them on the highway and have yet to be pulled over for exhaust volume.

To each there own, my car is definitely not a quiet car, but i have been in many NA cars with performance systems (not straight pipes) that are louder.

I have a friend with a turbo II RX7 and it has a resonator and muffler, 3" system, and my car is not even audible next to his...both cars with stock turbos.

Nose chunks - thanks

C-Flo - its a stock trim CT-26, eventually will probably go with a lex/550 and 57 trim CT but that is a ways down the road

 

[C-flo]

hmmm. I guess you can hear the turbo spooling a lot better from outside the car than inside the car, because I don't recall mine sounding like that. You must have a BOV to. I'm still runnin a factory setup all around.

 

[supradjza80]

well i can hear the turbo pretty well in the car too. The BOV is a SSQV without the insert.

 

[CzA]

I ran my car without a muffler 3”elbow back to straight pipe, and it still was not as loud as a friends mk3 n/a with sport exhaust at idle again, the turbo muffles out sound, i put a muffler on becaus ei had to pass my e test, and i just never bothered to take it off again i wonder how much HP, if any you would gain by removing the muffler (with a three inch elbow back set up mind you)

A rotary is a different breed of engine all together, and you will be hard pressed to overshadow a Wankels loudness when ready for a loudness fight. Especially if its ported (and i mean aggressive bridge port / anything peripheral), and no cat’s (They sound mean as hell on idle (at least to me, its the rotary style of a big block v8, womp womp womp womp womp), but i digress.

I have another friend who has a ported/ polished head, some other nice mods under the hood, and a 3.5 exhaust straight back, no muffler. This thing sounds mean. Could give a v8 a battle for aggressiveness at 3000 rpm’s in neutral.

Agin, what i think is mean to mean, might sound like trash to someone else.

 

[ma71supraturbo]

I drove with straight pipe for a couple of years. Its raw, unrefined, loud, etc. In case you needed another sound clip:

http://www.youtube.com/watch?v=gIRfnm1Qb8E


Its no where near as loud as most modified domestics, and I could baby it around the neighborhood without bothering neighbors. However, the upstairs room would vibrate when I started it in the garage (cold-start rpm).

And now, just a few years later, I find myself asking other people to repeat themselves a little more often than I should.


So my vote is for a decent muffler

 

[C-flo]

see that sounds great to me, but I'm pretty sure volume wise, it's going to be hard to get justice through video audio and laptop speakers. Thanks for the vid man!

 

[supradjza80]

The straight pipe really is not that loud if your comparing it to other NA performance cars. Compared to stock yes its loud. Compared to any brand new car its loud. Compared to a V8 NA car with performance exhaust it is quiet. But as I said i drive by cops all the time, and as long as I don't make the waste gate open, I have no problems (even in areas known to be tough on exhaust noise).

 

[C-flo]

Yeah and what sux is that I like Volume, but as stated before the turbo really reduces a lot of volume. Maybe a Apexi N1 would be louder than just straight pipe. 3 1/2" pipe to a Apexi N1.

 

[Fuzz420]

When i was n/a , my muffler fell off and i was stuck with my 2 1/2" exhaust. I had the cat still as well. It really wasnt that loud for dd. It was "boomy" from 1500-2500, acceleration speeds. At highway speeds you couldnt even tell i didnt have a muffler inside the cab. No drone what so ever. A WOT run and the car went from jackle to hyde in the sound department. Extremely loud at WOT, im mean EXTREMELY loud at WOT!!!!

Im now turbo with a full 3in from the turbo back, blitz nur kit with no cats. Its loud all over the rpm range,not that i mind. In comparison even under boost its not quit as loud as the old n/a @ wot. Now granted its two different types of tones between the two engines. Whats funny to me is drove the hell out my n/a and never got a noise violation , but two months after getting my turbo out of the shop, bam noise violation.

 

[supradjza80]

Yeah and what sux is that I like Volume, but as stated before the turbo really reduces a lot of volume. Maybe a Apexi N1 would be louder than just straight pipe. 3 1/2" pipe to a Apexi N1.

Im 100% positive that putting a muffler on a straight pipe will not make it louder. My muffler definitely makes it slightly quieter, but mostly makes the sound much less raw.

 

[Highnitro]

http://www.youtube.com/watch?v=gIRfnm1Qb8E

kinda off topic, but was that video at pir in portland, or?

anyway, my friend was running full 3" straight pipe on his 7mgte and we all loved it. im planning on a 4" straight setup with my t70, i have a feeling tho im gunna muffle it after awhile.