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 Performance Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
9000 Aero MY97 - Boost Questions (Long)
Posted by Tony [Email] (more from Tony) on Sun, 18 Mar 2007 23:59:01
Members do not see ads below this line. - Help Keep This Site Online - Signup
Hi, Have recently adjusted my base boost from 0.5 bar (7.25psi) to 0.76 bar (11psi). Pessure figures measured before and after on boost guage. Car is running various mods inclusing a MapTun Stage 4 (incl. larger 465ml green injectors, Abbott Racing hi flow intercooler & 2.5" s/steel exhaust, etc). Base Boost measure measred at approx. 3500rpm in 4th gear with WOT and just squeezing the brake pedal to drop boost to base boost level. Certainly things happen a lot quicker with sharper responses. However I have some questions this forum could probably answer for me:
1. When applying WOT the boost swinbs dramatically to 25+psi (momentarily) until ECU stablises at approx. 20-21psi (and holds all the way to redline). I am thinking of winding back the actuator arm by 1/2 turn (should take base boost back to approx. 0.7bar). to minimise boost overshoot. Is this wise?? I am still using the standard Saab MAP sensor. Should I go to an uprated MASP sensor (3 bar). What will this achieve??
2. Can someone advise me the GM P/N for the 3 bar M AP sensor??
The MapTun Stage 4 tune maxs boost to around 1.3bar. Some previouse feedback has suggested that base boost should be set at spprox. 1/2 max boost level. Certainly the car feels and drives (seat of pants measures) faster and stronger.
posted by 203.214.118...
Posts in this Thread:
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!