Impreza Tuning Packs - GD Impreza Tuning Programs - Impreza Tuning Packages

The GD series Impreza WRX STI was well covered in the aftermarket tuning industry even though as standard the car made 261bhp and 253lbs/ft of torque. Tuning packages/tuning programs/remaps, whatever you want to call them mainly focused on a remap increasing the boost and increasing the power with the factory approved PPP pack offered by Prodrive being arguably the most famous if not the most respected. This may well be the case but how did it stack up against the offer Impreza tuning packages available on the market.


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see also:

Impreza GC8 Buying Guide
Impreza GC8 History
Subaru Tuning Specialists
Subaru Insurance Specialists
Impreza Performance Exhausts


Impreza Tuning Packs

Impreza Tuning Pack 1 - PPP (Prodrive Performance Pack)

Let's start with the PPP and see what it offers. You get a remapped ECU an a freer flowing cat back exhaust system. The result of fitting these parts is power up to 300bhp and torque up to 299lbs/ft, also of note is the
extra 30% of torque at 2500rpm. Although the car feels much more muscular it feels strained at the top end, more than likely because the standard turbo is running out of puff.

Power: 300bhp
Torque: 299lbs/ft
0-60: 5.2secs
0-100: 12.9secs
1/4mile: 13.7@102
80-100 in 4th: 4.4
Cost: 1995GBP

Impreza Tuning Pack 2 - Litchfield Imports/Powerstation

Very similar to the Prodrive pack in terms of what is offered, this package comes with a sports cat and cat back exhaust system from Milltek and an ECUTEK remap. Power is a little bit up on the Prodrive car and the mapping is just as good but again the turbo seems to run out of puff at higher rpms. The added bonus of this pack is that if you bought your Impreza new from Litchfield imports and had this Impreza tuning pack fitted it would come with a 3 year warranty.

Power: 320bhp
Torque: 310lbs/ft
0-60: 5.3secs
0-100: 13.1secs
1/4mile: 13.7/103
80-100 in 4th: 4.7
Cost: 1891GBP



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Impreza Tuning Packs

Impreza Tuning Pack 3 - G Force Motorsport 1

GForce were the UK's biggest supplier of Impreza tuning parts from the Australian firm APS. Their tuning pack comes with an ECUTEK remap, uprated fuel pump and APS's own 3incch diameter cat back exhaust system. Again very similar to the PPP conversion but the 3000rpm punch where the turbo comes in is much more noticeable. If the Litchfield or PPP tuning packs sound a bit civilised for you the G-Force could be right up your street if your looking for a bit of savagery in the power delivery.

Power: 315bhp
Torque: 300lbs/ft
0-60:: 5.2secs
0-100: 12.1secs
1/4mile: 13.5/104
80-100 in 4th: 4.0
Cost: 1995GBP

Impreza Tuning Pack 4 - Graham Goode Racing (GGR)

The GGR is again similar to the tuning packs listed above but it goes a little bit further. It comes with a sports car, cat back exhaust system, ECUTEK remap and the extra parts the others don't have, and induction kit. The GGR tuning pack suffers from noticeably slower boost response below 3600rpm. Whereas the other tuning packages start making power from 3000rpm the GGR program does get going until 3600rpm. On the flip side the GGR cars pulls hard towards the rev limiter unlike the GForce, Litchfield and PPP cars.

Power: 330bhp
Torque: 320lbs/ft
0-60: 5.2secs
0-100: 12secs
1/4mile: 13.5/105
80-100 in 4th: 3.7
Cost: 1900GBP

Impreza Tuning Pack 5 - TSL Motorsport

Again the TSL package comes with a cat back exhaust system and ECUTEK remap. To keep to the chase the map is extremely good, it is just as good as the PPP car but the boost comes in sooner and there is more power at the top end, it's like the PPP pack but better. The adjustment of the cam lift and timing and ignition must have taken a while but it was worth it

Power: 333bhp
Torque: 333lbs/ft
0-60: 4.8secs
0-100: 12.6secs
1/4mile: 13.6/103
80-100 in 4th: 3.9
Cost: 2100GBP

Impreza Tuning Pack 6 - GForce Motorsport Pack 2

More involved mods come with this tuning package the main aspect being the larger front mounted intercooler, there also modifications to the induction and exhaust systems. The changes the parts make is dramatic. The boost comes in lower and harder and pulls cleanly and powerfully to the redline. By 2700rpm pressure is up to 1bar and by 3500rpm there is almost 2 bar which is held to 6500rpm.

Power: 355bhp
Torque: 335lbs/ft
0-60: 4.3secs
0-100: 10.8secs
1/4mile: 12.8/109
80-100 in 4th: 3.5
Cost: 5495GBP

Impreza Tuning Pack 7 - GForce Motorsport Pack 3

A much more comprehensive set up than the previous 2 packages from GForce. This set up comes with a turbo back exhaust system, ECUTEK remap, bigger turbo, 8 injector setup and oil cooler and a paddle clutch. This setup has the similar characteristics to the PPP car but magnified as you would expect from a car putting out 400bhp.

Power: 400bhp
Torque: 360lbs/ft
0-60: 4.4secs
0-100: 10.1secs
1/4mile: 12.7/111
80-100 in 4th: 3.1
Cost: 11,645GBP

Impreza Tuning Pack 8 - Roger Clark Motorsport

Another big money conversion but there is no doubt that this is a special setup. For the money you get an uprated clutch, a completely rebuilt motor using new steel rods, crankshaft and forged pistons, a huge amount of cylinder head work, front mount intercooler, uprated fuel system, bigger Garrett turbo and a Motec standalone ECU. As soon as you drive the car you know it is something special, it is extremely quick as well as being extremely civilised. Driving the car around town you wouldn't know that is was capable of 0-140mph in 19.8 seconds.

Power: 437bhp
Torque: 390lbs/ft
0-60: 3.99secs
0-100: 9.4secs
1/4mile: 12.5/114
80-100 in 4th: 2.8
Cost: 15,000GBP

Impreza Tuning Pack Summary

So which is the best package? Looking at the packs closest to the PPP first, i.e. the packs with exhaust and remap, the TSL kit seems to give the best all-round ability. It is just as good as the PPP in terms of quality of the mapping but it also gives more power and better response. Of the big money conversions, the RCM package sits head and shoulders above the rest with it's Ferrari 575 Maranello like acceleration.

External Links

Modified Car Insurance
Some interesting links to forums discussing the Subaru insurance issues.

A massively popular forum for Impreza owners



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