How hard is it to take the throttle body off without damaging the gasket? Or would it be better to have a spare gasket on hand just in case?

You can't damage the Throttle Body gasket..

Thanks. Sounds like the trickiest bit is not loosing the spring clips. I'm going to tackle this job real soon, for the first time as you can probably tell.

Cheers

Make sure you use a decent amount of lubricant on the injector "o" rings (vaseline works a treat)....dont try and fit them dry as you will most likely split the "o" rings which will spell trouble when you start it up the first time 

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Without sounding like a sicko perv, ky works better

You can't damage the Throttle Body gasket..

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I beg to differ....

Be careful.

So I just take out the stock ones and the 968's will be straight fit replacement?

Nesh

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Yes Nesh the 968 are a direct replacement and fit straight in. All up the job should take you approx 30-60 mins

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Really? Won't he require a custom tune after the larger injectors go in? I would have thought it'd run way too rich otherwise?