Jonparker

Hi I have a 1999 Subaru Impreza 2000 turbo. Fitted air filter,Toyo sport manifold and y pipe , 3.5 inch decat full system exhaust. Looking at remap how much power should be possible I am hoping for 280-300 bhp . If not what other mods would I need . Been quoted 700 quid for remap and if I paying that much want to make sure I don't waste money by low power gains

HonestIago

280bhp absolute tops on the standard TD04 turbo. You should uprate the fuel pump if its not been done already. A well set up UK turbo running 270-280bhp on the original turbo will drive really well and be nicely responsive without causing any real reliability issues over standard.

I ran a TD05 on my MY00 PPP (240bhp standard) UK turbo after being offered it by my local specialist. After lots of expense with mapping and reliability related upgrades I had a car that wasn't really appreciably faster on a B-road (despite being around 300bhp) as it didn't spool nearly as well and hastened the demise of its original clutch! Not to mention giving me worries about the gearbox...

Sorry to go off on a tangent but my advice would be by all means get a remap and enjoy the car but don't go any further than that unless you're sure of the car's overall condition. In a typical case of heart over head I threw a lot of money at what was with hindsight a ropey (well rusty!) UK turbo.

Not saying yours is a bad example but check the state of the suspension and also look for rust on rear subframe, suspension turrets and arches before spending significant money on power upgrades. Apologies if you know all this but I thought I'd state the obvious seeing its your first post.

Jonparker

Hi thanks for your reply I'd be happy with 280 as big power was the target.didnt want major lag issues think I will do the fuel pump before the remap. Maybe a Walbro 255lt The cars in very good condition and been very well serviced and looked after with only 60.000 miles not the clock, it's very well looked after underneath .but who knows how the cars been driven in its previous life so engine or running gear could have unknown vulnerableabiltys. I was trying to keep the reliability aspect with improved responsiveness and drivability. Trying to find someone to even map it's proving a challenge no one around me will touch it . Due to either equipment or the Subaru system known too have troubles while mapping .and specialist want 650-700 for a map or trying to offload a new ecu Cheers