Quote:
Originally Posted by mini_racer
Going from the JCW pulley to a 16% will get you in the 5-7hp range, not a huge increase, but it is significant. It is especially important that the performance boost is lower in the rpm range, so you can really feel it.
You will like it, I promise.
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Thanks for that - I was hoping the increase in torque and like you say that fact that higher boost that comes in earlier will make the difference very noticable...
Quote:
Originally Posted by JPMM
I have the GP IC and the 15% pulley makes my JCW run better but the difference in heat (in the summer)is more (even with the GP). So the car will detune itself and you feel a more drastic drop in performance when it gets hotter. A water injection system will counter the heat and you should get the performance back.
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Those are valid points and something that I have thought about - surely the hotter temps will only be a problem if 'pushing' when its hot ? As long as I dont test the car quite so hard when ambients are high I shouldnt see problems from temp clipping... ?? Ive currently got a 7.4k rpm rev limit too so will be dropping that a touch, probably to match the GP rev limit, when the new pulley goes on - jsut as Im on the cautious side...
Quote:
Originally Posted by JPMM
plus the the more % pulley you go the smaller it gets , causing the belt to go around a smaller and smaller pulley stressing it more.
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True - I get an oil change at more frequent intervals than normal - at least once a year, usually every 6 months, so I guess I will just need to add a belt change during the oil service from now
Modding a car does mean that you need to treat it a little differently so its not a problem for me to have to spend a little more on servicing/maintenance... Thanks though.
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UK - R56 Cooper s, Stealthcat DP, MeisterR coilovers, SPC arms, fJCW backbox, BBS RC323 (ET35 7.5Jx17) and 205/40/17tyres. 190bhp 210lbft
