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++ VR6 Tuning Guide:

+ Stage 0: Free / Budget Modding

+
Stage 1: Bolt-Ons

+ Stage 2: All Motor (N/A)

+ Stage 3: Forced Induction

+ Weight Reduction

+
Handling


ForceFed Engineering




Tribual PC High Performance Systems

 

+ Stage 1: Bolt-Ons

+
Ready to get the most out of your car? Stage 1 is a very nice improvement over stock. Most of the following mods can be done yourself, a repair manual (i.e Bentley) would be a good reference tool.

Reflash your ECU: ~$250-300+
Description: Companies / Octane / Programs offered
Flashing or "chipping" your stock computer will give you better throttle response as well as an increase in HP/TQ. Most programming will offer approx. 5-10+ hp and approx. 10-15+ ft-lbs of torque gained.

GIAC 24V: 91/93/100/Stock/Valet/Lock
GIAC 12V: 91/93/100/Stock/Valet/Lock
EIP 12V Multi-Stage
EIP 24V Multi-Stage
Autotech Q-Chip
Dyno



Catback: ~$200-600
Description: Info
The factory catback (55mm) is somewhat restrictive and should be replaced with a larger, better flowing unit. 2.25 or 2.5 inch catbacks can be used. Custom catbacks are a viable option. Remember, bigger isn't always better - unlike the 1.8T, the VR6 needs some backpressure (turbo creates it naturally). Aftermarket exhausts are an enthusiast's favorite because of how good VR6s sound with them!

+ Gains: ~10hp
Listen to popular exhaust systems
12V exhaust shoot-out
Exhaust Poll
24V Exhaust thread



Intake: ~$100+
Description: DIY Links / Info
Replacing the factory airbox with an aftermarket intake is a rewarding mod. Aftermarket intakes produce lower air intake temps which in turn = denser air = more power. Intakes also lead to better throttle response as well as more HP up top.

+ Gains: ~10hp
DIY Install
Large Intake Comparison



Camshaft: ~$300-1000+
Description: DIY Links
Camshaft: A shaft that has a series of cams at intervals along its length, for operating the engine valve mechanism. Made up of a series of egg-shaped sections, which as they rotate raise and lower part of the valve train, which in turn causes the valves to open and close.
+ Duration: Duration refers to how long a valve is opened in relation to crankshaft rotation.
+ Lift: While duration refers to how long the valve is opened, cam lift is used to determine how wide the valve is opened.
+ 256/264 popular for non forced induction usuage (12v), 264/256,252 (24v)
+ Note: Software written for aftermarket cams is recommended to receive the most gains
+ Gains: ~10-15hp

Cam. info
Cam. install prices
12V Cam. Dyno
24V Cam. Dyno
EIP offered Cams (good reference)
Autotech Special
Cam List
252 24V Dyno
264/268 24V Dyno
Why not to use MK3 Cams on MK4
DSR 256 Cam Info



Dogbone mount kit: ~$30-100
Description: DIY Links
The stock rubber bushings inside of the dogmount mounts are very soft. Although this equals a very smooth ride, wheel-hop is common when accelerating. This mod involves replacing the stock rubber bushings with heavy duty inserts.

+ Note: May increase cabin vibrations


Install

ECS Mount / Kits
Black Forest Stage 1 Install DIY / Results



Continue on to Stage 2