what software your running. The basic principal here is that K04's move more air, more air in the combustion chamber generally means more fuel to maintain an ideal A/F ratio.

Other issues are MAF sensor limitations based on the size of the MAF housing and related boost levels.

Larger injectors to provide that additional fuel.

If your K03's blow and you need a quick solution, install K04's and purchase the Stage 3- programming.

This is probably your safest bet if you are on a budget (outside of putting K03's back in). This way you don't have to learn about MAF scaling, A/F ratios etc etc.

Or just take it to someone, Piggie, Wicked etc.

Good Luck.

________________________________________

2001 S4 6-Speed Santorin

Engine/Drivetrain: ASP Stage III Fueling, MBC in parallel, RS4 Y-Pipe/Clutch/Fuel Pump/IC's, X1 Intake, Samco F-Hose, APR Bi-Pipe, Labree Splits w/out Cats, Miltek Single (No reducer), AWE DTS, APR Snub, TG SS. .

Suspension/Brakes: Vogtland GT, Neuspeed Rear Swaybar (Med), Stoptech 332 BBK.

Exterior: 18" BBS CH, M3 Lip Spoiler, SPP Foglight Bulbs, RS4 Grill, E-Codes.

Interior: UUC Alcantata Boot, TwinData
EFU, Strat S4 Logo Floor Mats, HW V1, PhatBox.

Why didn't I just buy a 993 or 996 TT ?