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CARB legal and quiet supercharger - does such a thing exist?

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Old 09-12-2008, 10:41 AM
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Default CARB legal and quiet supercharger - does such a thing exist?

I am throwing around the idea of supercharging my integra LS. I will be living in a slightly shady area in california and don't want to draw attention to my car.

Vortech has the SQ 'super quiet' but i haven't heard anything about how quiet it actually is. Also at 4 grand, a little expensive. But if it is barely audible it's worth it.

Any other brands? any ideas on what i should be looking at?
Old 09-12-2008, 10:52 AM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

The Vortech ones are pretty quiet, in all honesty I think they sound like you have a big fan under the hood.

If you're looking for inconspicuous, the Vortech is not loud enough to be noticable while you're just driving around. It does have a BOV of sorts, but if you rerouted it it shouldn't be noticable.
Old 09-12-2008, 12:01 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (SovXietday)

good infos.
Do you know if the whining noise comes outta the 'bov'? if so i could pipe it through a mufflebox like the stock intake after it's replaced with a short ram / CAI.
Old 09-12-2008, 12:19 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

hmm, you know what, i did a little more reading about the vortech and i'm gonna have to pass on that one. The vortech one apparently has a peaky power band and lag.. on top of being expensive, that's friggin' useless for $4000.

I take it the JSRC is noisy as hell with no nope to quiet the thing down.. am i right?
Old 09-12-2008, 12:45 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Neptronix &raquo;</TD></TR><TR><TD CLASS="quote">hmm, you know what, i did a little more reading about the vortech and i'm gonna have to pass on that one. The vortech one apparently has a peaky power band and lag.. on top of being expensive, that's friggin' useless for $4000.

I take it the JSRC is noisy as hell with no nope to quiet the thing down.. am i right?</TD></TR></TABLE>

Vortech isn't laggy, and all superchargers peak horsepower at redline. They don't make a lot of power though.

And yes, the JRSC is quite noticable.
Old 09-12-2008, 07:04 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (SovXietday)

https://honda-tech.com/zerothread?id=475628
https://honda-tech.com/zerothread?id=557744 ( read the posts below )

this is what got me thinking that the vortechs are not so great.
Old 09-12-2008, 09:07 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

the jrsc is really quiet if your idling or not boosting, in fact, it makes virtually no noise when out of boost, and with the hood closed no one would ever know u had it, but to tell u the truth, on a ls the jrsc is pretty weak, u would be lucky to break much over 200hp. the s/c that comes with the ls kits is just to small.

there are a few guys who have modded the gsr and b16 kits to fit onto the ls head with pretty nice results. and u could prob stay carb legal if u had a carb sticker for a ls kit

I have not heard any good things about the vortech kits at all.

your other option would be to go lsvtec and then use a gsr or b16 jrsc kit which will net u 250 or so hp with nice midrange power, but then you would not be carb legal

if your lookin more than 250hp or you want a simple bolt on and go, then a simple ls-t setup will be your best bet with a t3/t4 or similar sized turbo, once again prob not gonna be carb legal
Old 09-12-2008, 11:08 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (JRSC01GS-R)

I'm happy with 200hp! this is a daily driver and i'm mostly looking for some low end kick, the high end in the LS is not really exciting, but with a blower i'm sure it is.

hm.. would it be possible to enable/disable supercharging on the fly? I know this is possible with a turbo setup, and a boost controller + hondata. I've seen videos on youtube with JSRC setups and they're [freak]in' loud when the throttle is open, so the only way that could work is if i could disable it a few miles before home.

I'm not hearing good things about vortech either and it seems expensive for what you get..
Old 09-12-2008, 11:32 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (SovXietday)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SovXietday &raquo;</TD></TR><TR><TD CLASS="quote">And yes, the JRSC is quite noticable.</TD></TR></TABLE>

Use a stock intake and the JRSC will be 200% quieter!!
Old 09-13-2008, 08:46 AM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Neptronix &raquo;</TD></TR><TR><TD CLASS="quote">I'm happy with 200hp! this is a daily driver and i'm mostly looking for some low end kick, the high end in the LS is not really exciting, but with a blower i'm sure it is.

hm.. would it be possible to enable/disable supercharging on the fly? I know this is possible with a turbo setup, and a boost controller + hondata. I've seen videos on youtube with JSRC setups and they're [freak]in' loud when the throttle is open, so the only way that could work is if i could disable it a few miles before home.

I'm not hearing good things about vortech either and it seems expensive for what you get..</TD></TR></TABLE>

the only time u can hear the jrsc is when your boosting, the way the bypass valve works, u have to give it more than half throttle or so before the s/c kicks in, so as long as u didnt boost the car near your house no one would ever know u had teh s/c

this is a vid from my car with my spare motor in it, motor had pretty worn rings so it was down 25hp or so from my original setup, but if u watch the vid, and listen closely u can only hear the s/c when im really gettin on it, just cruisin around town sounds just like a normal car http://s159.photobucket.com/al...p.flv
Old 09-14-2008, 08:15 AM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (JRSC01GS-R)

Jesus christ that's quick.
Yes it does sound quiet, all i hear is your exhaust.
Can anyone else confirm that this is how a JSRC performs without any mods?

It doesn't make 100% sense to me because the pulley is driving the supercharger all the time.
I take it that the classic supercharger whine comes from the intake, and since you aren't giving the SC enough air to do anything, you're not hearing much noise.. am i right?
Old 09-14-2008, 09:10 AM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

the s/c has a bypass valve that is vacuum actuated, when your drivin around at part throttle all the air is going around the s/c and straight into the intake manifold, just like a n/a car, then when u get on it and the bypass valve closes, it diverts the incoming air through the blower which then compresses it and makes your boost and your nice whine noise

my car was only making 225hp in that vid the motor was just too beat up, with my original motor, it made 250hp and pulled a little harder. both motors had the same bolt ons, hondata, injectors, cai, jdm itr header, a cat and running through a 2.25 exhaust running 9lbs boost
Old 09-14-2008, 09:35 AM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (JRSC01GS-R)

Ahh, that makes sense. And tuning sounds simple since you are just dumping xxx amount of additonal fuel at over ~50% throttle, unlike turbo where there is variance, spool up time, spin down time, etc. I like this. I might just do this instead of the h23 swap. Especially since you could get good hwy mpg with one of these - might have to switch to a GSR transmission to increase the highway RPM's so the throttle position is low enough but hey.

You're in california. Any smog/carb concerns i should think about? or was this a track car?
Also, you went turbo.. did the horsepower bug bite you and the JRSC wasn't enough?
Old 09-14-2008, 12:11 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

i had my hood popped a few times with the jrsc, and since the kit had a carb sticker they always had to let me go, but when it came time to smog, i just put stock ecu, and injectors in and took it straight to the smog shop, then came home and put everything back on without coming close to boost during the 5 minute drive

my gsr was runnin low 13's with the jrsc, but yea it just wasnt enough for me, i wanted to run 11's with room to grow later on down the road, so I went with a turbo setup that could take me into the high 9's low 10's eventually.

my daily driver is a truck, but if I could, I would build a crx with a b18c and jrsc to drive back and forth to work with, just cause the s/c was so much fun for street driving and keep my gsr for the weekends and track use
Old 09-14-2008, 02:15 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (JRSC01GS-R)

low 13's.. insane.

Wow, so it's all good at smog time even with the SC manifold on. that is killer. i guess it wouldn't even boost at the smog shop.

I was thinking about b18c for starters ( the JDM swap from hmotors is cheap ) but i read with the high compression vtec dohc motors you run the risk of pinging on 91 octane. Is this true?
Old 09-14-2008, 03:26 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

speaking of which, it looks like a LS JRSC was never made.
I'm going to have to check on the forums to see if there's a way for it to run on my car.
I bet in california you can't get away with running a kit made for a B18Cx on a B18B motor.
Old 09-14-2008, 04:34 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (Neptronix)

there was a jrsc made for the ls integra, but it wasnt nearly as popular as the si, gsr and itr kits, so your right, it appears that they are no longer producing it anymore. if u look around u might be able to find a used kit for sale, otherwise just use a gsr kit and redrill the intake manifold to accept your ls head. u might wanna call moss motors and see if u can buy a carb sticker for your ls. tell them u bought a kit used, and that u need the sticker to smog, see what they say. http://www.supercharger.com

search through this thread, i think it was user jeffhaut who redrilled his gsr kit to fit his ls head, they will also be able to answer any possible question u might have also
https://honda-tech.com/zero...age=1
Old 09-14-2008, 05:33 PM
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Default Re: CARB legal and quiet supercharger - does such a thing exist? (JRSC01GS-R)

http://www.supercharger.com/Sh...33372

I looked at the parts lists and that's a lot of parts !!! I would be nervous about buying one used. Would rather go with your idea of adapting a GSR kit. $2600 is not bad. I'll find out what can be done about the intake manifold.

On a side note, i got this car professionally washed and waxed today and apparently this body is very rusty. some ghetto coverup work was done by previous owner. I might start looking for a DC2 shell because this. Holes are forming in the side panels. I can only imagine what's underneath..
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