I have a 2000 A4 1.8t with the stock boost controller I was wondering what would be a good Boost controller to buy to replace the stock one I intend on puting a K04 in and chipping the engine.

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2000 Audi A4 1.8T Quattro Tiptronic [ Borla cat-back,forge DV, Euro spec headlights,RS4 Grill,vogtland springs,18"s,ABD Intake,Godspeed FMIC, APR Boost Guage, Replica RS4 kit, GIAC chip]

For a small stock turbo a good bleed valve would be smoother than a ball and spring controller. I have a turboXS hp boost controller that has both adjustments and you can fine tune it easily and i have never had any boost spikes over the set boost level.

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FACTS > followers
197whp and 292wtq with no chip on stock ic, airbox and catback
AEG crank +Scat rods + 83mm Wiseco pistons = CincyTT Version 2.0T