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Here is a list of some of the upgrades you can do:
1) “Free” do it yourself upgrades – Search for 3” airbox mod, turbo silencer, and throttle body transition casting. Basically, more intake air and less intake restriction means more available power.
2) 22mm rear sway bar from Swedish Auto Specialties, Taliaferro Imports, MP Performance, etc. - a big improvement in handling and a lot less body roll. $ (search for rear sway bar for lots on information)
3) MBC+A (search fro MBC+A) an inexpensive way to get extra power and faster spool-up. $
4) New Shocks and Struts, I prefer Koni Sport Adjustable. $$$$
5) Steering rack brace and polyurethane bushings from Abbott Racing, Taliaferro Imports, MP Performacne, etc. - This really increases the steering response and gives good road feedback. $$$$$
6) A sport exhaust like a Saab sport exhaust or have one made locally, - a must before any other serious engine tuning. $$$
7) A Forge or HyperBoost boost pressure valve - again this is needed before an increase in boost pressure. $$
8) ECU upgrade - now the fun really begins! $$$$$
9) Upgrade to Viggen type intercooler for less intake restriction and less intake temperature rise. $$$
10) Add a 3" downpipe to help get all that extra air out to the exhaust and get better turbo response. $$$
Rob Mustard (aka REM in Seattle)
1998 Saab 900SET; 5-door; Automatic; 77,000 miles
UPGRADES
ENGINE (dyno tested at 193 hp and 215 lb-ft at the wheels; or approx. 230 hp and 250 lb-ft at the crankshaft)
-SpeedParts ‘Stage 2’ Engine Control Unit (ECU).
-Saab stainless steel sport exhaust with added center resonator.
-Forge MotorSport FMCL007P piston type boost pressure by-pass/diverter valve.
-3” inlet tube to factory airbox with ITG performance foam air filter.
-Smoothed/ported throttle body transition casting and removed turbocharger outlet tube ‘silencer’.
SUSPENSION
-205/55-WR16 Pirelli PZero Nero M+S tires.
-Swedish Auto Specialties 22mm (7/8”) rear anti-sway bar.
-Koni Sport adjustable front struts and rear shock absorbers.
-Abbott Racing steering rack brace and polyurethane tracking control arm bushings.
-MP Performance sub-frame brace.
LIGHTING
-European E-code headlights with Philips ‘VisionPlus’ halogen 60/55 watt H4 bulbs.
AUDIO
-Infinity Kappa speakers – 3.5” 2-way speakers in the dash, 6”x9” 3-way speakers in the rear parcel shelf, and 6.5” mid-bass speakers in the front doors.
-Dynamat ‘Super’ & Dynamat ‘Premium’ sound deadening material in doors and rear cargo area.
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