engine management system is a must. you can get a chip from some of the sources mentioned in other postings. or you can get a completely programmable one. nice part about the chip is that it tends to be plug and play once the tuner gets your specs. with the programmable one, you can make your own updates for every additional change you make, but it is much more time intensive on install and you need to tune it right or you can really damage things. another plus with the programmable is you can use it to drive the water injection if you decide to add it on. i went the programmable route and loved it. it was a lot of pain, but a lot of fun as well. it was my daily driver for years and i would make tweaks on the fly to improve soft spots in acceleration, cruising on the highway, etc. most of all, i was patient and learned a ton about how the c900 engine works.

key thing with any mod to keep in mind is that everything needs to work together. meaning, you can't just throw in larger injectors and expect an increase in power. if you can move more air through the engine (ported head, cam work, larger exhaust, larger turbo) then you need more fuel. if the stock system won't keep up, then you need to make changes. some have found that larger injectors and a larger FPR work with the stock ecu map to fill the need for fuel. others have found that even those changes don't result in rounding out the fuel need. so, if you go the chip route, and you are working with a tuner, make sure they know your set up (fmic, turbo, exhaust, cams, headwork, injector size, etc). if they aren't asking you these questions, or at least telling you what their chip is programmed for, then you won't necessarily have the best solution for your car.

good luck.

kooch
1990 c900 - modified
2006 9-3 aero - bsr

posted by 24.60.1...

• Mod's to a 87 SPG, James, Sat, 5 Dec 2009 09:26:10
  • Mod's to a 87 SPG, SWEDISH DYNAMICS, Fri, 11 Dec 2009 15:53:31
  • Re: Mod's to a 87 SPG (long), kooch, Mon, 7 Dec 2009 04:27:26 <-- Viewing This Message
    • Re: Mod's to a 87 SPG (long), lancer, Mon, 7 Dec 2009 09:29:06
    • Re: Mod's to a 87 SPG (long), James, Mon, 7 Dec 2009 07:37:35
      • Re: Mod's to a 87 SPG (long), James, Mon, 7 Dec 2009 10:15:15
  • Re: Mod's to a 87 SPG, GM, Sun, 6 Dec 2009 17:21:41
    • Re: Mod's to a 87 SPG, James, Mon, 7 Dec 2009 07:42:46
      • Re: Mod's to a 87 SPG, GM, Mon, 7 Dec 2009 08:24:57
        • Re: Mod's to a 87 SPG, James Cleland, Mon, 7 Dec 2009 08:41:31
          • gear oil should be ok....., GM, Mon, 7 Dec 2009 11:53:53
  • Re: Mod's to a 87 SPG, lancer, Sat, 5 Dec 2009 10:56:08
    • Re: Mod's to a 87 SPG, James, Sat, 5 Dec 2009 12:31:22
  • Re: Mod's to a 87 SPG, Simon S, Sat, 5 Dec 2009 09:48:13

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.

• Prev by Date: Great info Hans.....nm, Chris9k, Sun, 6 Dec 2009 22:08:40
• Next by Date: Re: cut out, lms, Mon, 7 Dec 2009 06:39:58
• Main Performance Bulletin Board

StateOfNine.com

SaabClub.com

Jak Stoll Performance

M Car Covers

Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)