The following is a suggested upgrade path as put out by Mike at Road/Race Engineering.
PLEASE NOTE that all prices are current as of 7/15/02, but they can
change at any moment, so do not take them as gospel. They are a general
guide only, to give you an idea of roughly how much the mods will cost.
| This is the upgrade path that we recommend for the GVR-4. Here is the
current list and prices. There is a reason that we are using the parts
listed here - they work. They have not been chosen because they are in
style or fresh, just proven. If you build an "all GReddy" or
"all HKS" GVR-4, or if you want a Blitz BOV just because
everyone else has a GReddy, your performance will suffer.
Since the GVR-4 is a very limited production car, you will find yourself on your own for some projects. We support this Do-It -Your-Self attitude by offering many of the hard to find fabrication parts specific to DSMs and GVR-4s. See the RRE DIY Pages for more info. Your car should be in top mechanical condition before attempting these mods. This means replace your timing belt at the recommended intervals and keep everything on the timing side of the motor in top shape. You should have no exhaust or oil leaks, no lifter tick, no strange suspension problems and great brakes. |
| Mike W |
| ITEM | Description | Cost |
|---|---|---|
| Air filter | Road/Race-Uni Foam Filter or K&N Filter | $40 |
| Install Air filter and remove the Boost Control Solenoid restrictor, which raises boost 2-3 psi | $30 | |
| Exhaust Mail Order |
3" Certified Muffler (Florida) | $ ??
$275-$300 |
| Mofugas Downpipe | $225 | |
| Mofugas High Flow cat | $125 | |
| Exhaust Local Install or muffler shop |
Exhaust @ Your local
muffler shop Road/Race 2 1/2"(Local installs only) Road/Race 3" (Local installs only) (1 resonator, straight thru muffler, simple tip, mandrel bent) |
|
|
$250-450 |
||
| 2 1/2" or 3" RRE Custom
Down Pipe Install |
$200 |
|
| 2 1/2" or 3" High Flow cat |
$ 150 |
|
| Fuel Pump | Your
stock fuel pump flows 100
liters per hour @ 43 psi @ 12V. This pump flows 150 lph.
Walbro In Tank Fuel Pump |
$135 |
| Free Mods | Remove Boost Control Solenoid Restrictor
Advanced: |
|
INTERCOOLER AND PIPING
The GVR-4 is a little unique compared to the rest of the DSM line. The intercooler, while it is mounted in the front, is very small. Oil cooler sized. For making any serious boost you will need to upgrade it. The first choice for most DIY guys is to modify a front mounted I/C from a Starion turbo. They can be purchased from a wrecking yard for $75 to $150. They flow well enough for over 300 hp and look nice. After the I/C bottleneck is addressed you would then work on the piping. Stock piping is 1 7/8" diameter. Upgrade it to at least 2 1/4" or 2 1/2" if you are going for berserk hp.
| ITEM | Description | Cost |
|---|---|---|
| I/C Piping | Includes all piping from turbo to intercooler, from intercooler to throttle body. Air filter assembly needs to be moved forward. Battery needs to be moved. This straightens out the inlet tract to the turbo. Piping Kit only assumes you already have an upgraded I/C and have the ability to adapt and modify our pipes and hose to your I/C install. We give 2" dia hose down thru the drivers side of the radiator in the stock area. We pick up with 2 1/4" hose at the bottom of the radiator support on the passenger side. The stock intercooler is the biggest restriction, that needs to be addressed before you worry about I/C piping |
$450 |
| Install | $180 | |
| Front Mount Intercooler | RRE/Griffin top to bottom flow,
18" wide by 6" tall core.
I/C with
end tanks only |
$475 $150 $125 |
| ITEM | Nicer Choice | Cost | Budget Choice | Cost | |
|---|---|---|---|---|---|
| Boost controller | GReddy PRofec-B | $350 | RRE Manual Boost Control | $60 | |
Install Prices: |
$40 $55 $140 $210 $ $28 |
||||
| Spark Plugs and Wires | Magnecor
8.5mm wires NGK BP7ES plugs |
$79 $10/set |
NGK 7mm Plug Wires | $45 | |
| Install plugs and wires | $10 labor | ||||
| Exhaust Gas Temperature Gauge | GReddy Electronic Peak/Hold 60mm | $225 | GReddy Electronic 52mm | $165 | |
| Install EGT Install probe only |
$85 labor $25 labor |
||||
| ITEM | Description | Cost |
|---|---|---|
| Exhaust Flow | Port Exhaust Parts | |
| This is good for 15hp alone. The stock manifold flows well enough for up to around 400hp if ported. The exhaust housing of the turbo and the turbo outlet (O2 sensor housing) also benefit from porting. | ||
| Port
Exhaust Manifold Port Turbo Exhaust housing Port Waste Gate Port Compressor Outlet Port O2 Sensor housing Port All Wicked Port All If Exhaust Manifold is cracked, new 2G manifold |
$ 75 $ 75 $ 40 $ 35 $ 75 $225 $300 $180 |
|
| Remove and install Assembly Broken Studs (common) |
$180 $ 40+ |
|
| 16-G Turbos | If your turbo is
dead, time to upgrade. With the 16-G, you can keep the
boost down and need only an upgraded fuel pump. To run over 15-16
psi boost on pump (92) gas SAFELY, you will need more fuel.
Mitsubishi TDO5-16G-7cm. |
|
| Regular 16-G
Turbo Big 16G Turbo Clip 5-15 degrees Porting (see above) Install Gaskets (inc 7cm gasket) Broken Studs (common) SS Oil Line |
$590 $595 $100 $180 $ 45 $ 40+ $ 55 |
|
| Serious
Upgrades: (For turbos larger than the 16G, you will need an upgraded intercooler AND something to either upgrade the GVR-4 MAS to a larger 2G one or eliminate it by using a HK$ VPC) |
||
| Frankenstein |
Mitsubishi TDO6 cartridge and exhaust wheel Uses a Mitsubishi 7cm exhaust housing that has been bored to fit the TD0-6 wheel. The 20G style compressor housing is machined to fit a Garrett 46 trim wheel making it effectively a bolt-on T3-T4 turbo. Turbo only |
$1250 $300+ |
| External Wastegate |
|
$200 $350 $200+ |
| ITEM | Description | Cost |
|---|---|---|
| To take full advantage of all the air flow that you now have, you need more fuel and the ability to control it. | ||
| Air/Fuel Ratio Meter | Jumptronix Digital O2 Sensor Voltage Meter | $85 |
| Fuel |
Super AFC |
$290 $450 $450 $450 $450 |
| Cams | Web Cams -
546/
547 grind cams Lumpy Idle, Big power Install cams |
$475 $125 |
| ITEM | Description | Cost |
|---|---|---|
| Clutch | Good: ACT 2100lb with the street disc Excellent All Around: Center Force 2500lb Ball Bearing Dual Friction Best but Strong Left Leg: ACT 2600lb with the street disc (all prices include a factory T/O bearing) Lighten flywheel and resurface (exchange) Install Stainless Steel Clutch Hydraulic Line |
$335 $375 $395 $135 $275 $ 20 |
ADVANCED TUNING
| ITEM | Description | Cost |
|---|---|---|
| Datalogger | Don't even think you will be fast with out one. | $300 |
| Advanced Tuning | For
applications over 275hp cut away lower MAS channel
entirely or switch to 2G MAS
or HKS VPC. 2G MAS Install Flows more air than the stock air flow meter. Needs a 2G air filter and turbo inlet hose. Must be used with the AFC. You would need to relocate the battery. |
|
| Used 2G
MAS 2G K&N Filter Install |
$150-$250 $ 95 $100 |
|
| HK$ VPC | Vein Pressure Converter, also
known as the "Variable Performance Computer" because of
the love /hate relationship everyone has with it. Eliminates
factory air flow meter for less restriction before
the turbo. Also gives you a little adjustability
with the fuel. Uses the factory air box with air
flow meter removed, or buy a K&N-type open
filter & adapter to replace air box
completely. Different programs available for stock
injectors or 550cc injectors.
For larger injectors, we use the AFC to further compensate. In cold weather, it can cause poor fuel mileage and/or erratic idle speed at any time. HK$ never has them in stock, get a used one, much better value. HKS VPC Used |
$450-650 $160 |
| Advance Base Ignition Timing | Advance base ignition timing from 5 degrees stock to a total of 10 degrees. With 92 octane it is a waste of time, on 93-94 octane gas it can help some, usually you just end up back where you started after the ECU retards for knock. This is best done on high octane race gas. | |
| ITEM | Description | Cost |
|---|---|---|
| Head Work | Port Cylinder
Head Remove and install head Valve Job Upper Gasket Set |
$300
and up $250 $250 to 400 $140 |
| Big Bore Throttle Body | Bored Out Throttle Body (exchange) | $250 |
| Install a
bigger throttle body and port out the intake manifold
inlet to match and adjust TPS
Install a bigger throttle body and port out the intake manifold inlet to match and adjust TPS |
$95
$75 |
|
| Intake | Extrude Hone Intake Manifold (exchange) Remove and install |
$375 $150 |
| Ignition | MSD Digital DIS-2 (Pic) Install Additional to connect 2-Step rev limiter |
$350 $80 $80 |
| ITEM | Description | Cost |
|---|---|---|
| 4 Bolt Rear Axle | ||
| 4 Spider Center Diff | Speed Designs 4 Spider Gear Conversion | |
| LSD Center Diff | Quaife Center LSD | $1500 |
| ITEM | Description | Cost |
|---|---|---|
| Brake Pads and Rotors | Power Slot
Rotors Front Rear |
$240 $180 |
| Metal Master
Brake Pads Front Rear |
$
55 $ 45 |
|
| Install Brakes | $80 | |
| Brake Lines | Stainless/Braided Brake
Lines Brake Fluid Motul 600c (1 Liter) Install lines and bleed brakes |
$109 $ 18 $100 |
| Springs and Shocks | H&R
Springs Mofugas/Whiteline Springs KYB GR-2 Gas Shocks KYB AGX Adjustable Shocks Install |
$225 $250 $275 $400 $100 |
| Strut Tower Bars | GReddy Front Strut Tower Bar RRE Rear Strut Tower Bar Install Bars |
$99 |
| Sway Bars | Mofugas/White
Line Rear Sway Bar Install |
$160 $ 90 |
| Urethane Bushings | Energy Suspension Bushings Minimal install All installed |
$200 $450 |
Prices good at 7/00. Prices are subject to change with out notice. Install prices are for local customers only. Install prices may vary if your car is a star in the Dope Show. All prices are doubled if you have a bunch of messed up parts from the 909 area code land that leak, fall off, or cause an injury. $100 charge for every time your alarm goes off, on a slow day we reserve the right to set it off just for the extra cash so be sure it will NOT work when you drop it off.
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