Scott shepherd Posted September 10, 2017 Share Posted September 10, 2017 Hi just bought a 2004 wrx Impreza which is standard apart from exhaust and forge re circ blow off valve , I am wondering What safe power I can get with stock internals? And what I need to get around 280 bhp ? Thanks Scott Quote Link to comment Share on other sites More sharing options...
Rps Posted September 10, 2017 Share Posted September 10, 2017 Wrxs are limited by the gearbox to the 350bhp mark To boost power you would need a better turbo and injectors along with a remap plus afew bits If you looking for over 300bhp you better off selling and buying an sti as itll be cheaper that the cost of yours plus modding also the sti has a 6 speed box and Brembo brakes to name afew inprovements Quote Link to comment Share on other sites More sharing options...
Charlie_89 Posted September 10, 2017 Share Posted September 10, 2017 Wouldn't take a great deal to get 280HP. Exhaust 2.5 or 3inch ( sport cat in down pipe and decat mid pipe), fuel pump (Walbro 255) and a remap. You could also upgraded the y pipe for the intercooler as this could increase air flow. Quote Link to comment Share on other sites More sharing options...
Rps Posted September 10, 2017 Share Posted September 10, 2017 I thought 280bhp was pushing abit too much on a standard wrx turbo Quote Link to comment Share on other sites More sharing options...
Charlie_89 Posted September 10, 2017 Share Posted September 10, 2017 260 - 280hp is the best you can get from the WRX's TD04 turbo while keeping it safe. Quote Link to comment Share on other sites More sharing options...
Scott shepherd Posted September 11, 2017 Author Share Posted September 11, 2017 Thanks guys , what turbo would I need to be safe for 300 ?? I would rather be on safe side than strain the standard one Quote Link to comment Share on other sites More sharing options...
Charlie_89 Posted September 11, 2017 Share Posted September 11, 2017 There's honestly so many options out there if your looking to reach 300hp. A second hand STI turbo (VF 43) is a good option if your on a budget or you can get a fresh VF34 for about £1000. Here's a few links to guides regarding tuning the WRX . http://www.andyforrestperformance.co.uk/01-05-uk-euro-wrx/ http://www.wrxtuners.com/forums/#/topics/4007 Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted September 11, 2017 Share Posted September 11, 2017 If your only after 280hp a exhaust , panel filter and remap won't be far off .If you want just over 300hp id suggest getting pink injectors and a sti or aftermarket up pipe to go with the turbo you choose. As Your blue 465cc injectors will max at about 320hp , the tdo4 will max at 270hp and the precat in the wrx up pipe will slow spool a bit .Sent from my SM-G930F using Tapatalk Quote Link to comment Share on other sites More sharing options...
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