Neuspeed
800/423-3623
www.neuspeed.com
Neuspeed has two intake kits. The $200 P-Flow is CARB-approved, even when used with its $400 software, which raises boost to 15-16psi (17.5psi on A4). At $240, the Race Series CAI draws air from the inner fender and includes a billet smog pump fitting but isn't recommended for rainy areas.
Next is Neuspeed's turbo intake pipe, which reportedly flows 63% more than the crimped factory unit. For $260 it's available for variable and non-variable cam Golf, Jetta and Beetle. Owners of the A4 and Passat can use Neuspeed's Xtreme intake hose from Samco that's 70mm at the MAF and tapers to 58mm at the turbo. It sells from $300.
The T6061 aluminum crank, power-steering and alternator pulleys ($200-300) reportedly net 5whp.
For real power, Neuspeed's BorgWarner K04 upgrade kit ($1800-2000) for GTI, Jetta, A4 and Passat includes Iridium plugs, P-Chip, fuel pressure regulator, gaskets and hardware. For '97-01 A4 and '98-05 Passat, the kit also has a 180 fan switch.
For this kit, Neuspeed sells the needed exhaust for Golf, Jetta and Beetle with a 60mm (2.36") or 70mm (2.75") mandrel bent, TIG-welded, 304 stainless pipe ($600-800). A 60mm downpipe is also available ($290), but requires cutting and welding. Exhausts are also available.
NGP Racing
877/437-6261
www.ngpracing.com
NGP distributes APR, Forge and Euro Sport products. Complimenting these are other parts such as its $700 Ross Racing T6061 aluminum intake manifold for Golf/Jetta which improves air flow. The unit can be used with either a factory or 70mm throttle body, which can mount on either side. It comes with a -6 fuel rail for Bosch injectors, and has provision for the intake air temp sensor along with three holes for 0.25" NPT fittings.
If your 1.8T is due for a rebuild, stroke it from 1984-2090cc. The different compression JE piston-equipped kits start at $1940 with factory forged rods and cast crank, and go to $2690 with 4340 forged rods and forged crank. Also available are fully-built 1.8-2.2 liter stroker short blocks with forged internals from $3650 to special order.
NGP also sells Simple Digital Systems programmable engine management to control boost, rpm, ignition, fuel, etc. Starting at $1311, it includes the ECU, harness, IAT, H20 temp and crank sensors, fuel trim control, LCD programmer, timing magnets and coil/amp unit. MAP, knock and 02 sensors are additional.
Oettinger
www.oettinger.com
The German-based company carries a full line of software upgrades for the 1.8T, good for 15-25hp, depending on the model. Coupled with its intake, downpipe, turbo and intercooler upgrades, the company reports 50-80hp increases for the A4, Golf, Passat and TT.
Revo Technik
866/632-4060
www.revotechnik.com
A British-based company, Revo Technik has its own software for the A4 ('01-05), GTI and Jetta. The $499 stage 1 software produces 20-30whp and 30-35 lb/ft. It's designed for cars that are near stock.
For an extra $50, stage 2 is for cars with a K04 turbo, bigger injectors, turbo-back exhaust and FMIC. Stage 3 retails for $699 and is designed around ATP's GT28RS or similar-sized turbos. It works with 550cc injectors and a larger MAF from the R32 or 225 TT.
Techtonics Tuning
800/821-0598
www.techtonicstuning.com
Techtonics carries its own line of cat-back exhausts for A4, Golf, Jetta, Beetle, Passat and TT. Prices start around $400 for aluminized mild steel and go up to $800 for its stainless steel systems built for quattros.
Upsolute
www.upsolute.com
Formerly Chiptronics, The Austrian-based company carries a full range of software, reportedly ranging between 20-30whp gains.
Unorthodox Racing
631/586-9525
www.unorthodoxracing.com
Known for its CAD-designed and CNC-machined 6061 billet aluminum lightweight pulleys, Unorthodox pulley sets retail for about $310. Apparently, these provide power gains through weight loss, and about 15% of gains come from underdriving the accessories. Their philosophy is to not underdrive too much since people need their air conditioning, power steering and batteries to work!