The Subaru Impreza Tuning And Performance Handbook makes this possible. If you would like to visit the VWRX page. It will give you an insight into what is really possible when modifying, my car the VWRX and a few other favorites.
With their phenomenal success in rally, Subaru have really carved out a fantastic and truly amazing, easy to own high performance car.
The Subaru Impreza WRX an STi both appeal to those with family needs as they are such great all round cars. The engines are very solid and very reliable, they can also tolerate a great deal of tuning. One of the highest performing "family friendly cars" around. Ideal for those who want an on road rally car but have to be a bit sensible!. The Subaru Impreza's flat four boxer engine is certainly one of the most distinctive sounding engines around, and the engine configuration means that the weight is carried low down in the engine bay which definitely helps the handling. Here are just a few simple mods for people that want a little extra form their engine, I would recommend the following tuning modifications for the Subaru Impreza WRX and STi. Subaru Impreza Tuning And General Mods
1. A Performance Exhaust can free some of the power in your engine. These aftermarket systems allow for a quicker, more efficient path for exhaust gases to escape. This means your engine "breathes" better, so spent fuel and air exit the combustion chambers faster and new fuel and air can be burned to create more power.
2. A Performance Air Filter you could see anywhere from a 4-15ish horse power increase.
3. A Sports Cam Profile will lift the power in the upper part of the rev band, however this will affect the smooth tick-over of the engine so this is only really recommend for serious track day use.
4. The turbo can fairly easily be upgraded. A remap will yield large power gains but this is best left until last so you will gain all the benefit from the other modifications you have done.
5. If you increase the power you will certainly benefit from an uprated inter-cooler, indeed many owners of standard impreza WRX and STi report a power increase from adding an inter-cooler.
6. There was a problem with the early fuel pickups which would result in fuel starvation on long fast sweeping bends. A new design pickup/pump will address this issue.
7. If you fit a lighter flywheel your engine will be more free revving and will feel more powerful. You will also certainly want to uprate the clutch although the original clutch should be good for 350 bhp, unless it is particularly worn.
8. The engine capacity can be increased to around 2.5 litres. This should not overly affect the reliability of the engine but we would recommend a thorough testing of your block for fatigue. A sports catalyst and sports exhaust will help the breathing of the engine. If you are increasing the power by a significant margin you should also uprate the fuel pump and injectors and possibly the fuel rail configuration, on early impreza's this also caused fuel supply issues, doing this will keep the air to fuel mixture within their optimum parameters.
But if you are really serious about modifying your Impreza you need to CLICK HERE, for the Subaru Impreza Tuning and Performance Handbook, this holds all the information you need, that will help you on the right track to building one very fast Performance Impreza, it holds vast information on Subaru Impreza Tuning and Performance Modifications.
