GTI-R US
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Posts : 8349
Join date : 2012-03-04
Age : 108
Location : DONT KNOW ANY CLUES???
Yes piper 270 and 272s are basically re-profiled cams
Very good cams but if I'm honest they are not really suitable for a gtir with solid lifters because you'll get no benefit from them until your over around 6500 rpm and at that point your kind of looking to change gear.
Ideally you need a lower profile cam which will come in at a lower rpm where you can make the most of it.
With the big tubby you've got you inadvertently have created a bit of a lag monster which is probably another reason why she's over fuelling at lower down intervals until the cams kick in. Obviously this can be helped by a good map taking the cams into consideration but if I were you I would ditch them in favour of some hks 264s or Kent cams which are a 258 profile.
If not you would be far better to run it with the stock cams the car then will have a lot more low down oomph and be much more drivable with a good bit of mapping
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