are sleepers dead? am i the only guy left that thinks a car that goes fast with a non-existant (quiet) exhaust sound is cool? am i the only one with a fast car that doesnt want attention from everyone when i drive by?

If I could afford a quiet exhaust that actually performed, I probably would own a new GTO or Charger right now. Why would I spend as much money on my exhaust as I've spent on my whole car? Sorry but straith thru bullet design mufflers from thrush are 20 bucks a pop and flow almost as good as a straight pipe. I guess I could run like 4 of them to get the noise down. But then your talking 80 bucks. To rich for my blood.

Cheapo glass packs actually flow nowhere near as well as better oval mufflers, and certainly not close to a straight pipe. A 2.25" perforated core glass pack flows under 300 cfms. The straight through design is deceptive -- they really don't flow well at all.

I notice that your engine is an 02 ls1, but it says HX40 next to it. Cummins turbo? That is sweet. I built a supra for a friend and we put an HX40 on it. It rocked. I bet yours really gets up and goes.

uh, I think the flow of a straight 2.25 inch pipe is around 300 cfms. And most turbo style mufflers are just a series of perforated tubes. I would buy your arguement on a louvered glass pack, but not a perforated one. And most cheapo glass packs are louvered. You just have to be careful, and thrush happens to still make cheap perforated ones. Look at the design of many of dynomax's mufflers. I had their 3 inch in 3 inch out one that's supposed to flow some ridiculous number and it was nothing but a perforated tube going diagonally through the body of the muffler. No different than a perforated glass pack. Just a little quieter.

ok, here's some info from a place that did some tests.

http://www.broaderperformance.com/mu...flow_tests.htm

2.25 straight pipe 365 cfm
2.25 glass pack(no louvers) 274 cfm
2.25 3 chamber flowmaster 229 cfm
2.5 2 chamber flowmaster 249 cfm
2.25 glass pack(louvers) 133 cfm.
2.5 Dynomas super turbo 268 cfm

The perforated glass pack outflows the bigger 2.5 inch flowmaster. Not that flows are the best but, the perforated glass is one of the best flowing mufflers you can get anywhere near the price.

Ah there you go. Wow the louvers really do make a difference. Flowmasters flow awful, that isn't a secret. A dynomax ultraflow in 2.5" flows over 1000 cfm (I run them in the 2.25" variant)

No sleepers are not dead. I have a cammed LS1 with cats and a edelbrock 3" thats nice and quiet. I also have 15" rally wheels. It fools them every time.

I dunno about being a sleeper, but I greatly enjoy driving through a parking lot or even better, an inside covered parking lot, and setting off EVERY SINGLE poorly adjusted car alarm within 1000 feet. Seriously, I routinely set of 4 or 5 in every parking lot I go to, lol. Now, I can do this stock and with a flowmaster. Eh, I find it amusing at least. lol Just tap the gas and a flurry of whee ooo whee ooo whee's start up like some kind of air raid is going on.

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You want a real sleeper get a 70s sedan and throw a bigblock in it. Thats a real sleeper. Kinda like my friends supercarged 1980 malibu that looks like it should be going to the grocery store but spanks most cars on the road.

I love a thirdgen that looks completely stock but can click off 12s at the track with street tires.

That's what my goal is for my car.

Don't like that test. Exhaust comes out in pulses, not straight airflow.

My 305 is retarded( ) Thats whats going on with my LO3.

And it still manages to scare off a lot of people.

I have headers, to high flow cat and straight pipes. Always set the alarms at parkinglots. ITs usually the import cars that have those "poorly set" alarms.


I don't race much, since I want my engine to last for at least few more months. I am saving up for my 350. Whenver I rev at someone they usually back down.
However, sometimes.... They are louder
I still manage to take some 5.0's (Go figure). On the highway too

Anyways, my LO3 is loud and retarded (advanced 8* )

Although my car is a somewhat stock L98, it is very quiet. At idle it sounds stock, but when you go wot, it sounds like a f***** freight train

Yes it's dead. People in general like to show off how much they spent on thier car. The exh note is to get your attention . If I ever get the BB in the bird it will be a sleeper.

Sleepers are NOT dead. Go street racing for money sometime. Oh yes, nothing like an 11 second diesel landscaping truck to drain the wallet.

They most definitely exist. Be afraid. Be VERY afraid.

Thats what I did and it runs 12's lol. I used an edelbrock catback since it has the stock looking tips.

Having a loud exhaust is like saying my tool is bigger than yours


Definately love setting off car alarms with my 2.5" straight lakers coming off of a set of headers

After looking at that chart, maybe I'll try a Hooker Max Flow muffler. Still mulling it over, though, Flowmaster or try the Max Flow. Heck, it's only $59 at summit.... part no. 21605HKR. I wonder how it sounds, though.

Sleeper! A word I haven't heard for awhile, but a word I use to describe my ride. I've loved the sleeper idea since I was a kid (yes, I'm an old fart). My 85 IROC appears stock and sounds stockish until it romp it, then the sound gets angry: Hooker 2055's, Catco high-flow and Hooker catback.

JamesC

uh,i hope it's not dead!
around here we call the ones that set off all the car alarms "cop callers!
still looking for that "perfect"exhaust note,i had thrush sonic turbo's on my old first gen and liked the quiet deep tone,but when you romped on it WOW!
Eric B

You guys think that dual oval spintechs dumped b4 the rear would be really loud? Also gonna be running 2210's, coated. Would an H pipe make it quiter? How do I find where to put it?

I want my car to be a sleeper by beeing sleek and stay under the raydar. That is why I am gonna paint it stock Artic White. I want to use my stock Z28 hood but dunno if it going to fit. I am going to be running an edelbrock victor junior single plane, an NX N20 plate and a holly 750 DP. Maybe with a really low air intake it would fit.

I wanna have a car that can go both ways, so it can be showy if I want it to be. My lambo doors can go up almost 90* or they can just open normaly. I kinda want to run a cut out, not to get more loud, but to become more quiet. Maybe attach another muffler (flowmaster) on the cut out.

Thanks guys.

An ls1 in a 3rdgen along w/ a BBC are not "sleeper" cars. Common people. Build something that you can pop the hood on and still get a race.

Damon is absolutely right. Real Street Racing will never die, and it's the best place to find the sleepers you never knew existed. Just might cost you a couple hundred to find em.... Building sleepers helps you expand your horizons and really gets people thinking outside the box. I love the entire process of street racing, from hidding a direct port, to talking shat and setting up the race. It sharpens fabrication and problem solving skills.

right now its N/A.. the turbosetup is just tacked together on a engine stand.. it'll be in there eventually, but im not made of money

have any links or info on your friends supra? i cant find alot of people running the HX40 on gas powered street cars....






note:
to all thoes talking about loud exhausts....






.... you dont get it. lol. shouldnt you be boasting...err... posting about how loud it is in any thread on here, except this one?

generally i dont open the hood.... but if i pop my hood, 90% of the time, the person doesnt know what they're looking at.


stupid? yes.

obvious to me, and others like me? yes.


but most **** talkers that want to race me, cant figure it out, on their own... even those with LS1s think its slow from the exhaust note, and the fact its a vert... its not easy to see that it weighs 3220lbs with my 230lb *** in it.. theres alot of little things about it that arent obvious.

If that vic.jr is the same hieght as the performer.. that is not going to fit under the stock hood... the assembly will.. but you will not be able to have any size of ait cleaner on there... so you may have to get a cowl hood.

Thats what I thought. 3" seems to be what i am leaning twords.

I second on the thing about guys saying that they set off alarms. It is fun and I used to do it too. But this is the LAST thread you would want to be saying that kinda stuff in. Sleepers are cars that are not loud and look pretty slow.

Anywyas, I think any thirdgen with no GFX looks like a sleeper.

Too bad most of them are just slow SC

This is a perfect example of the type of people that give our hobby a bad name. Obnoxious, bothersome, impossible to ignore.

People generally don't mind fast cars, as long as they're operated in a respectful manner. What they do mind, is being unable to escape being bothered by them in whatever way. I (and nearly everybody else) don't find any pleasure in being forced to endure a bunch of disruptive noise from somebody else's inadequate exhaust system.

This is true and I totally 100% agree with you sofakingdom. But then again, just cuz it is loud I wouldn't call it inadiquate. I plan on running 2210, straight pipes and spintechs. I really hope I am not going to be too loud, but if I am "oh well". What can I do....I really wanna run the oval pipes for clearance.

When I was in Highschool it was really a blast to do that, (alarm setting off) But with maturity that goes away. Now if some guy is being a real ******* and cuts u off and stuff, then when he gets out of his car, and steals your spot at the mall, it is fairly helariouse to rev and make his Beemer alarm go nuts....... There is a time and place, those times and places just become less with age. (I am only 21 so i still kinda like to do stupid stuff, but see how it is imature)

By the way. I am BUMMED out that I may not be able to run my stock hood

the cops might see your stock hood,but they will know where to find you from two blocks away if you fire it up!
if they come by and hear your exact exhaust note they can call that proof.if you have turbo style mufflers the tone doesn't sound like the same car,and the keep looking!
Eric B

Who needs a special exhaust for that...I still have the stock setup and it sets off the red honda accord every time I back out of my garrage...and I'm three car spots away from the thing. I don't sound loud and I am hoping to make look on the outside fairly stock. Yay for sleepers!

Wait....I am not sure I am understanding 100%.

Let me just reitorate, to make sure I get what you meen sleeper...

If you use a tubo muffler the tone will change enough that if a cop hears it turn on and then comes over to look, the car will sounds totally different at idle when using this kind of muffler?

If this is so, I am not sure, but I don't think my oval mufflers I am going to order are tubo style. Oh well. There is not exactly a long list of oval thin mufflers. If it is really bad, maybe I can add something esle someplce else. Like those inserts that go in the collectors. I hear they do a great job and result in almost no flow loss.

if you want to be loud and quiet, dont compromise...


put a stock (or stock replacement) muffler on.. and then toss a electric cutout on it..

loud when its ok to be loud... and quiet when its 2am and you're driving home thru the neighborhood.


you know it takes 100s of dollars in timing equipment to measure the half a tenth diff that occurs between the best muffler, and the OEM-ish quiet ones.

on the street, that amounts to... nill.


imagine being able to easily talk to your girl next to you in the car... HEAR the radio.... and still go just as fast.

why wouldnt you? to be "cool"?

That's awesome. I have the exact same setup that will be going on my car as soon as I get my headers back from Jet-Hot.

You don't happen to have any sound clips do you?

MrDude_1 you are so right. I couldn't agree more. But what do you suggest if I need to run oval mufflers? Are spintechs considered loud? I would rather have them be quiet. Does any other comapnies sell ovel mufflers?

I would love to have the quietness of stockish mufflers, and then a cut out. I acctually allready have an electric 3" one, but I have no place to put it. My pipes are going to go straight back and dump. Wish there was more clearance under there.

Only in my noggin--and I'm

JamesC

are you talking the perforated or baffled design. as far as I know most glasspacks are baffled not perforated.


with the perforated cores there is almost nothing there to restrict flow on them

nah I say having a loud exhuast is just acting like every other r<x>icer there. you know screaming loud straight though mufflers so why can't the same thing apply to the thirdgens with their loud exhuast?

no kidding. I forgot what it was like to drive a quite car for a long time. now that the rx7 is broke for now and I'm driving my backup I can hear myself think and talk to my g/f. it's weird but so much nicer to be able to do that

How could you ever say good ol american muscle could ever sound like a r!cer... shame on you

I like my nascar loudness while ripping up the streets

With my setup its not too loud if you take it easy when your on the 3am drive home and dont want the neighbors to shoot you but when i open it up she makes a hella racket.

I have to agree with the cutout statement. There is a time and a place where loud is fun but the commute to work, hearing the stereo or having a conversation with the gf is a pain in the @ss.
My flowmaster catback just gave up the ghost a little while ago and has a hole in it about the size of a cutout right above the axle and it is driving me insane. I can't wait untill my new exhaust gets here.

But I keep getting comments on how good my rusted out exhaust sounds. Little do they know it's completely unintentional.

Back on subject. With all the 4th gen biased people around and the complete ignorance to the potential of a 3rd gen, and the bad rep they have for being slow, Just driving a 3rd gen in essence is driving a sleeper imo.

well,the turbo's worked for me with full length headers,that's all i can say.they weren't exactly quiet at cruise but putting around both large cities and small country towns(the worst!)they were quite pleasant and gave a restricted but powerful tone.as the rpms climbed and the foot went down and the cam started coming into it's range(3k-6500)they woke right up.
i'm not a huge fan of cutouts just because there are simply more parts to go bad and my exhaust isn't something i feel like doing maintenance on.plus i just don't care to pull a choke cable or two just to get rowdy.
i'll just uncap the headers at the track and be happy sleepering around town.if i feel frisky on the street i get plenty of loudness with the flowmaster exhaust that's on there now.
when the ladder bar setup is done i'll go back to the true duals with turbo mufflers and an x pipe like my 67 ss/rs had and be happy again!
it really is all subjective anyway!
Eric B

oh yeah,if you really want a cop caller,who needs pipes anyway?
when i broke in the 355 it took exactly 32 minutes for them to show up at my door(after a 25 minute break in)!
open headers sound the absolute meanest of any "exhaust system"!!!!!!!!!!!!!!
Eric B

Kinda glad about where I live, couple cops actually commented on how good my car sounds They've never bothered me even after doing a burnout with an open y-pipe practically in the backyard of the station.

I built a sleeper. The hardest part is keeping the underhood looking stock and still make over 350 HP without nitrous.
I finished everything but the exhaust. I have an audio/video clip of the engine with only turndowns after the longtube headmans.
Check it out.
You can hear why it probably needs mufflers. I've driven it a bunch on the street as is but then again, this is Alabama. I need some pictures of true dual systems that you guys have installed. Email me

burnouts behind the police station? why?

yes spintechs are loud, but at the same time they're some of the smoothest, meanest sounded exhausts i've ever heard. one of the few that you can get with a 3 or 3.5 inch input pipe. i think even 4 is available.

how is this for a sleeper

just get rid of the side pipes?

anyone want to guess what kind of car it is what what it's packing?

Looks to me like a Lada Niva or something...

I love open exhaust.
I think to myself that life is short, so I wanna enjoy every moment of it.
My 79 T/a was fast and even with turbo mufflers, the loudest car I've ever heard. That car had headers two cats and 2 mufflers. It sounded like nascar and it idled with "don't mess with me" sound.
I took down cobras all the time. One saleen as well. They all asked me what I was running and I said a 305 . I know, if they had any remote knowledge, they would be able to tell that I was running a big block.

My third gen, is not one of the fast crowds, but it still has more balls in the lower end than my 79. So I want it to be loud and I want people to think twice before they race me.

A friend of mine has a twin turbo civic, and he backed off the race with me when he heard my exhaust . He thought I ran something big in there (exact words).


Now, when NOS comes in than we go have fun!