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I offer a wide range of performance products for your Saab. Click the links below to be taken to specific products for your Saab.


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3 inch downpipe to suit NG900 & 9-3

Head porting and polishing

NG900 and 9-3 Intercooler

NG900 cold air intake

JSP T25 Turbo

JSP T25 Turbo


NG900 & 9-3 stainless steel header

JSP Stage 4 Dyno run (click to enlarge)

JSP Stage 5 Dyno run (click to enlarge)

JSP Stage 3 Clutch kit

JSP 50lb per hour fuel injectors

JSP 65lb per hour fuel injectors

JSP complete aluminized exhaust

NG900 and 9-3 Rack clamps

Trionic ECU upgrades

Custom pipe

JSP NG900 & T5 9-3 Exhaust Systems

JSP 3 inch exhaust downpipe

For the Saab NG900/9-3 Trionic 5 car up to 1999. This is made in mandrel bent aluminized steel which will not rust, with a high flow catalyst it is a direct bolt in unit.

Price: $POA.

Price: $POA in stainless steel

JSP Cat back 3 inch exhaust

For the Saab NG900/9-3 Trionic 5 car up to 1999. Made in stainless steel or aluminized steel.

Price:$POA for aluminized steel (includes muffler & tip)

Price: $POA for stainless steel.

JSP complete aluminized exhaust

For the Saab NG900/9-3 Trionic 5 car up to 1999. This complete exhaust uses magnaflow cat & muffler and has 4.5 inch round tip. It comes with clamps & everything you need to install it but the tools :-)

Price: $POA

JSP Stainless Steel Tubular header

I now offer a .10" thick 304 SS tubular header which has a nice collector & is strong as can be. This is a lifetime piece.

Price: $POA

New JSP 321 Stainless Steel Header

It uses a burns 321 stainless steel double slip collector, all tigged and back-purged It can be polished to a mirror finish if required. I also make a version which moves the turbo 1" foward and 2.5" away from the water pump/AC compressor to fit a bigger GT series turbo on the NG900 9-3 & 9-5, leaving more room for a turbo inlet pipe. By your request I will be happy to fabricate a header to your specifications if you are using a diferent turbo. It replaces the stock exhaust manifold.

Price: $POA

JSP NG900 & T5 9-3 Intercooler Systems

JSP NG900/9-3 bar & plate IC

The core dimensions of this IC are 3.5 x 8 x 20 which is the largest “drop in” performance IC on the market that Im aware of. The other thing that sets this IC apart from the others I see is the end tank design uses conventional tanks with mandrel bent inlet & outlets to keep the flow of air more smoothe thru the tanks & core. I can make the IC fit the stock (non Viggen) cold side hose as well as the viggen hoses both sides on request at no additional charge.

Price: $POA

Plus supply of hoses & pipes from the turbo compressor to IC on request.

Supply of hoses and pipes price: $POA.

JSP NG900 & T5 9-3 Turbo Systems

JSP T25 Turbo

The JSP T25 turbo upgrade is bigger than the TD0418T (the compressor wheel is the same size ias a T3/60). A very nice turbo direct bolt in unit, no need to hunt down all the bits to make the Mitsubishi unit fit.

Price: $POA + $200 core charge

JSP big T28 Turbo upgrade

This is the T25 compressor & exhaust housings machined out to accept a T28 complete new center section this turbo will suport 340BHP – well within its efficiency range but does trade off a little bottom end power for a lot of mid & top end power. This is a direct bolt in like the JSP T25/28.

Price: $POA

The JSP big T28 upgrade will be used in the upcoming JSP Stage 5 for the new generation 900.

Stage 5 will use bigger injectors as well… just add all the parts for the Stage 4 to these parts for Stage 5!

JSP NG900 & T5 9-3 Other Performance Parts

JSP Head porting and polishing

Headporting can be arranged and charged on an hourly basis (time spent on head). If you are interested in this service please contact me to be discuss your needs further.

Price: $POA.

JSP Cold air intake with shield

This is a cold air intake with shield for Saab NG900 & 9-3 (soon for T7 as well). 3 inch aluminum mandrel bends with all reinforced silicone couplers including heat shield (also aluminum) & air filter – connects to existing turbo inlet pipe using a step hose & then uses a hump hose to allow for greater engine movement for aggressive shifting & higher HP aplications. I can also weld on bosses for a recirculating bypass valve – all options can be discussed.

Price: $POA.

JSP Strut brace for the NG900 and 9-3

Price: Call for more info!

JSP Stage 3 clutch kits

This kit comes with pressure plate, dual friction disc (kevlar bronze ceramic) and slave cylinder/TO bearing. This is an agressive clutch for those who are serious about performance. Other friction options are available both more & less agressive, please call for details.

Price: $POA (for NG 900 2.0 litre with cable; and for 1998 NG900 2.3 litre with hydraulic)

JSP 50lb per hour fuel injectors

These are ball type injectors with a 4 nozzle tip for superior fuel atomization & will support up to 370BHP at 90% dutycycle.

Price: $POA

JSP 65 lb per hour fuel injectors

These injectors will suport up to 425BHP at 90% duty cycle. These are used in the higher stages of tuning and they are wafer type 4 nozzle injectors for superior fuel atomization

Price: $POA

Rack clamps

To suit application on the NG900 & 9-3

Price: $POA

Other JSP NG900 and 9-3 custom products

All kinds of custom exhaust & intercooler tubing for people that want to supply examples etc. Give me a call and we can discuss your needs!

JSP Trionic 5 Staged ECUs and performance kits

JSP T5 Tuned ECUs (NG900 and 1999 T5 9-3)

Now available! JSP tuned trionic ECUs all stages available up to 305BHP and 330 ft lbs torque.

JSP Stage 1 ECU & K&N drop in air filter only.

JSP Stage 2 downpipe K&N drop in air filter & 3 inch downpipe with sportcat.

JSP Stage 3 downpipe K&N drop in air filter & 3 inch downpipe with sportcat & 3 inch cat back exhaust (900 & 9-3 need at least a viggen IC).

JSP Stage 4 JSP T25/28 turbo downpipe K&N drop in air filter & 3 inch downpipe with sportcat & 3 inch cat back exhaust (900 & 9-3 need at least a viggen IC, preferably my IC).

JSP Stage 5 Coming Soon!

NOTE: I must receive the core within 30 days or there will be no refund!

All staged tuning for T5 cars is $350. Custom tuning available for all Trionic 5 cars.

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Our liability for losses or damages arising out of any cause whatsoever is limited to full refund of the purchase price, or at our option, repair or replacement of the part(s) purchased.

We are not to be held liable for any incidental or consequential damages. Some States do not allow the exclusion or limitation of incidental or consequential damages, so the above may not apply to you. Thank you.

Jak Stoll Performance