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How much bhp



  2005 Impreza WRX STI


filter £250-£350 dont get an open one like pipercoss etc

exhaust £275ish

de cat £75 - £150

chip £275- £650 depending.
 
  GDI Demo 182, Rsi Spider


we stock the viper, good value for bhp... £248 inc vat.

decat, 2.5" exhaust all the way

inlet manfold matching...

some form of accurate mapping
 


go ITG Maxogen - from everything i have read on here they are the best ones for the clio. Decats are fantastic, had one on my clio but havent got round to putting it back on, made huge difference in driveability. I have a full system which helped a bit, and then a chip to make sure your getting the best from it all. My full exhaust including decat cost £390, though for an extra £50 and some petrol you could get a full system from Hayward and scott - if the group buy is still going - for £440 and they are meant to be fantastic. Id say with all that youd get 10bhp, but if you got a better mainfold (182 manifold) youd probably get 15+ bhp


[Edited by theduckeatspork on 23 July 2005 at 11:15pm]



This is where someone that knows more than me - mailto:andy@gdi">andy@gdi or benr from angelworks will correct me for those figures being over the top.
 
  GDI Demo 182, Rsi Spider


increases vary depending on the engine in question which is why specific mapping, via smt, dastec etc etc is a winner... over a chip..

with inlet manifold mods, and exhaust and filter and mapping you should see 10-12 bhp peak.... however its (as everyone keeps forgetting) mid range torque and drivability that change more so!

20 ft lbs can be achieved on some engines.

A.
 


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