General > Product Reviews
RacingLine TFSI intake kit for K03/K04
pudding:
Yeah I meant buy the 42DD MAF housing and source the pipework and filter yourself. The MAF reading is critical. I have no idea why it's oval shaped on the MK5 and round on the MK4, 6 & 7, but it's what VW used and deviating from that seems to cause less than satisfactory running at light loads.
I have a suspicion it's because the turbo is so close to the MAF on the MK5, and an oval would reduce swirling vortexes, which MAFs don't like......or something.
I think if we mounted the MAF far away from the turbo like the MK6, we could use a round one. Dunno, it needs some experimentation! The car runs so well with the factory airbox, there's not much incentive to mess with it :smiley:
Dan_FR:
The round MAF pipe can work on the TFSI, but it has to be exactly right, both pipe diameter and mounting depth/position. I'm happy with mine and my fuel trims (both idle and LTFT) are within 1-2%. Most aftermarket intakes see an LTFT north of 10% and they really do ruin off boost light load driving, the car feels lethargic and less eager to 'get up and go'
pudding:
This is how to build an intake!
https://m.youtube.com/watch?v=cfaUCHyXZew
absolute:
Nice - doesn't look the prettiest but who really cares eh?
I think building your own intake is quite a class project to do. My main concern or frustration though is finding the right parts for mounting properly.
For example the front moulded heatshield / hardware that sits near the battery, looking OEM'ish and containg the air filter and potential velocity stack.
Also I'm not a welder so buying a steel pipe and getting mounting points made up isn't realistic.
I wonder if i'm worrying about nothing, and need to just find a decent local machine shop.
rich83:
I hate the look of that one but love how it uses all the original mounting points. Really well designed.
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