sounds like your having a few problems!! is the exhaust and cat ok that will make the car use more petrol?

i dunno my bhp yet im hoping for 150bhp when im done!

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Petrol - How do you drive it. You're getting around 135miles to a tank with is mad, but if you rag it all the time it's never going to get much to the gallon. Lowest I've had to a tank is around 160miles.

What mods have you done to the car? Surely if you've taken it to Power Engineering to be set up, they'd be able to spot any problems with the car?

I've no idea what power my Si was running, but it was quite nippy. I'd have thought it would've be just under 100bhp or something. Mere speculation though.

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nah i dont rag it all the time, ive taken the cat off aswell, its got an induction kit, superchip and ecotek thingy, its all good now, i fixed it myself, just changed the temp gauge sender, now on about 135miles for half a tank which is great compared to 40miles.
water pump and clutch have now gonethats another few hundred

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