ctxspy

iTrader: (3)

Actually it's the sound i'm annoyed by

It's such a loud sucking hiss .. it's as loud or louder than my bypass valve which is currently venting to atmospherre...

I put whatever damplifier pro i had left on my hood, (a little over a square foot) but that didn't make ANY difference at all.

Would making a heat shield / cold air box reduce the noise? Could i soundproof that??

I used to enjoy just driving around in the miata.. Then i wanted a little more power b/c it was embarassing. Now, i've got enough power, but i feel like a boy racer.. my exhaust is too loud, i have a whooshing BOV, and my intake sounds like a deflating tire!

Splitime

iTrader: (24)

Trade the turbo kit in for a Camry?

curly

iTrader: (25)

recirculate your BOV to quiet it down, make sure you don't have a boost leak, get a K&N filter (cheap ones will make more noise than others), and add another muffler to your exhaust, problem solved.

Saml01

iTrader: (9)

Grow a pair of *****.

ctxspy

iTrader: (3)

Sam, **** you -- your 1.6L valve cover is still waiting for you ;-) Given enough time i may get bored and start polishing it to see how bad i can screw it up.

I have a begi-s, it hink it came w/a K&N... i will also get a new exhaust at some point, hopefully a 3"..

I will be checking for a boost leak once i get my new intake tract..

Thanks guys

-Tomaj

kotomile

iTrader: (24)

Braineack

iTrader: (62)

My cold air box reduces the volume of the sucking noise significantly.

messiahx

iTrader: (2)

That's probably the best you can do short of getting your testosterone injections. If you reposition the filter to a spot with more empty space around it, that would probably help, too. If you're still running the stock exhaust, it will only get much louder with a 3" setup.

ctxspy

iTrader: (3)

Hey,

I'm using this exhaust:
Got a deal on an exhaust! - MX-5 Miata Forum

Before the turbo, this exhaust was ridiculously loud to the point i was going to toss it, having bought it just a few months earlier!

And i found this thread while looking , seems i'm not the only one who likes quiet!
Stock muffler with turbo - MX-5 Miata Forum

I'll be looking into the cold-air box... Braineack -- did you build it yourself? if so, out of what? (aluminum, thickness, how much material, how did you join @ the bends - welding?)

-Tomaj

skidude

iTrader: (3)

Mine was way too loud also, and I got harassed for asking how to quiet it down. At the moment I have a hot-air intake that isn't too loud but I plan to try turning it into a quieter cold air intake.

ctxspy

iTrader: (3)

i bought some silicone tubing to make a new (straighter) intake... once that's done, it's time to make the cold air box, i'll probably do something similar to this:

https://www.miataturbo.net/forum/t35127/

elesjuan

iTrader: (11)

if its too loud take it off and ship it over to me. I won't cry about it.



Saw a thread on m.net about this once.. Retarded..

ctxspy

iTrader: (3)

i build "version 1" of my cold air box. it's rude & crude but works, it's definitely a little quieter now. i stuck some leftover damplifier on it ;-)

I bought 2x2 ft aluminum sheet, and cut it in half. I then cut, fit, repeat until it was more or less OK for the bottom end. i then cut the top end by eyeballing the line from the side and marking with a pen.. not ideal, but OK for a rough draft.

for the intake hole, i just cut a "U" out as opposed to making an actual round hole (version 2 will have that).

I notched all along the edges and folded the metal back to make a smoother edge, then pushed some fuel line onto the edges to create a softer edge.

right now it's not perma-mounted with any tabs or whatever, but seems fairly stable because the cutout for the intake is tight enough to hold it tight.

Here's a quick question -- i was planning on using some 'hot water pipe' insulation for the edging instead of the fuel line... do you think this foam tube will be able to withstand underhood temps?

-tomaj

dustinb

I'm sorry but that's worth a lol.

ZX-Tex

iTrader: (15)

^^ Yeah that is a Mega-fail. If I was FM, I would sue for having my name within 10 feet of that car.

If you enclose the filter and/or add some ducting (smooth wall) it will help lower the sound level. Something like a BEGI-style air box would make a difference.

jeff_man

iTrader: (7)

your car turbo to loud...




i have a mp62 and it's annoying when it's not screaming at other cars.

mike_671

iTrader: (4)

ctxspy

iTrader: (3)

So since we all drive girlie cars, we must make them loud and obnoxious to compensate, show everyone how manly we are. got it.

In the meantime -- I built my 2nd version of the box.. i used the hot water foam around the top to seal against the hood, and the fuel line along the sides and bottom.

I'll probably build version 3 in a few months once all the cuts on my hands healed :-D

elesjuan

iTrader: (11)

For the record, do you drive a honda civic or a miata??

ctxspy

iTrader: (3)

I can put an end to all this sissy talk once and for all, here I am tearin it up in my car

vroom vroom