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Any noticeable gains using the spec r, driving characteristic's. With air filters I have found that they all drive slightly different, what filter are you using?
I've a Spec-R wrapped in gold heat reflective tape fed from an AS CAIS Mk2.
I had the AS CAIS on the standard crossover also.

If I'm honest, I noticed absolutely NO difference what so ever between the two.

Sure looks pretty though! :thumbsup:

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Certainly looks the business, as the std crossover pipe has more defects than the M1 I would have thought the spec r would have smoothed out the air flow helping induction especially over the MAF sensor.
That is certainly a possibility, but I haven't noticed a difference in the drive.

Then again, i am on a standard map, I don't know how it'll affect things once i get mapped
 
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