The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
7/1: Members: Log In to See Fewer Ads! |
5/28: SAAB Evolutions/TSN T-Shirts $14
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main NG900 & OG93 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Funky intake moaning... can anyone help (esp. Dean & mod-ers)
Posted by cl (more from cl) on Mon, 4 Jun 2001 21:45:34
Members do not see ads below this line. - Help Keep This Site Online - Signup
So first off here's my setup: Funnel mod air box, removed turbo discharge silencer, modified TB transition casting and Saab sport exhaust ... and oh ya, the "$35 manual boost controller" as it's come to be know around here.
here's my situation: i've noticed a wired "moan" sound (almost sounds like muffled honking geese, but only one prolonged noise). It occurs in every gear as i can tell but only under particular cricumstances:
1. RPS's @ 3000-4500
2. Steady 55-75% throttle
3. seems to be excentuated when going up hill
4. only occurs for about 200-500 rpm's worth of tach travel.
so anyone ever heard of this? or anyone have this happen to them?
it doesn't sound like a 'bad engine' noise or anything like that, it just doesn't sound nice. i didn't notice it until after all these mods, but the airbox, silencer, casting and manual BPC valve all were done over like 2 weeks (or 2 weekends as the case was).
my best guess is that i caused some wierd harmonic in my induction system. wondering if anyone knows different or has any ideas. I'd like to get rid of it (while keeping all mods of course). thanks for input
chris
'94 900 SET 89k
'87 900 turbo -RIP
Posts in this Thread:
- Funky intake moaning... can anyone help (esp. Dean & mod-ers), cl, Mon, 4 Jun 2001 21:45:34 <-- Viewing This Message
- my stock '95 SET has "always" done that, MJM
, Tue, 5 Jun 2001 08:55:31 - Wow! I was going to post the same thing today, Joshnat, Tue, 5 Jun 2001 08:52:14
- Re: Funky intake moaning... can anyone help (esp. Dean & mod-ers), Will Andrews, Mon, 4 Jun 2001 22:51:30
- that was my first thought..., cl, Tue, 5 Jun 2001 00:05:35
- It is the bypass valve., Dean, Tue, 5 Jun 2001 09:11:50
- hey dean..., cl, Wed, 6 Jun 2001 00:43:23
- One source of 'better' by-pass valves...., REM in Seattle, Tue, 5 Jun 2001 16:48:09
- Dean, where can you get a different bypass valve? n/m, Joshnat, Tue, 5 Jun 2001 16:20:08
- Re: It is the bypass valve., Saabster
, Tue, 5 Jun 2001 10:11:23
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
![](/tsn/xyz/stateofninebutton.gif) |
SaabClub.com
![](/tsn/xyz/scnabutton.gif) |
Jak Stoll Performance
![](/tsn/xyz/jakstollbutton.gif) |
M Car Covers
![](/tsn/xyz/mcarcoversbutton.gif) |
Ad Available
![](/tsn/xyz/buttonavailable.gif) |
![](/tsn/images/tsnmap.gif)
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!