What Maximum power out of JDM STi MY01?
Ive heard about 380BHP is about the top line to expect from standard internals. Someone correct me if im wrong. ;)
However im at a loss as i own a JDM MY01 WRX STi and have been told by john lichfied from lichfield imports that the cams and turbo are different (better/stronger) on imports STi's and also the cylinder head has been treated and my car also has forged pistons and rods where the UK spec HAS NOT. So using this knoledge i would assume that you could tune an import Sti way over a UK one. I mean if your throwing more boost and power into the car then you really need forged stuff to make your engine last. But at lichfield imports they were not prepared to take the car over 330BHP for whatever reason but i would assume its because of safety issues. But if you can tune a UK STi to 330BHP then can someone please tell me why then does that have to be the same power level for the stronger import STi? Not having a go here at lichfields at all just a question. ;) Surley stronger internals = more performance increases possible? Oh and other than a re-map of the ECU and exhaust what other parameters can be done to give more power and what other components could be upgraded like lightened pulleys etc to make this a reality. Any offers? |
Originally Posted by DJ WATTS
Ive heard about 380BHP is about the top line to expect from standard internals. Someone correct me if im wrong. ;)
However im at a loss as i own a JDM MY01 WRX STi and have been told by john lichfied from lichfield imports that the cams and turbo are different (better/stronger) on imports STi's and also the cylinder head has been treated and my car also has forged pistons and rods where the UK spec HAS NOT. In any case you are forgetting that reciprocating bits are only part of the equation. As your power target increases, you will have to get involved in changing other components. The sensible power limit for your turbo and injectors is around 350bhp for starters, so you'd be looking at tossing them in the trash if you wanted to shoot for 380, and would almost certainly find an intercooler upgrade was necessary too. So using this knoledge i would assume that you could tune an import Sti way over a UK one. But at lichfield imports they were not prepared to take the car over 330BHP for whatever reason but i would assume its because of safety issues. But if you can tune a UK STi to 330BHP then can someone please tell me why then does that have to be the same power level for the stronger import STi? Oh and other than a re-map of the ECU and exhaust what other parameters can be done to give more power and what other components could be upgraded like lightened pulleys etc to make this a reality. As stated above, turbo, injectors and intercooler at minimum would need sorting prior to remap if you wanted to approach the power target mentioned at the beginning of your post, while there are a hundred and one other bits you potentially could change. Have a read of the technical forums and you'll soon start to get the idea. |
Cheers for the reply greasemonkey. ;)
You are incorrect in thinking that your engine is significantly stronger than an STi Type UK's. It also has the same (or very similar) turbo, injectors and intercooler, which largely explains why the power ceiling will be about the same, unless you start changing other bits. The only real difference you would be likely to find would be that the Japanese car would develop its power further up the rev range due to its wilder cams. All of the below he said were, and i quote: "BETTER" than UK spec. Quote: Turbo IS different, cams are different, Forged rods & Forged pistons, cylinder head is treated with somert (maybe a few cans of stella or somert! :D ). Im pretty sure he knows what cars have what. ;) As for 380 horses, i read a thread somewhere on here a while ago where a few members said that 380 is about tops for pushing the car. ;) However 350 is a more reasonable power level i could live with like you have said and for best of both, performance/reliability. ;) |
Originally Posted by DJ WATTS
Im only going from what John Lichfied said to me on the phone
Im pretty sure he knows what cars have what. ;) As for 380 horses, i read a thread somewhere on here a while ago where a few members said that 380 is about tops for pushing the car. ;) |
horses are not the problem its the torque
when u go over 300 lb/ft u are in the zone for stripping 3rd gear |
Originally Posted by fuz
horses are not the problem its the torque
when u go over 300 lb/ft u are in the zone for stripping 3rd gear Tony:D |
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