Originally Posted by
TeKKiE 290whp is the limit on the DE MAF, so you should be fine.
That's only when it's bored to 54mm though.
Really you might be all right and you might not. It all really depends on other factors like compression ratio and other supporting mods.
The only sure way to tell is using a TechTom or some other datalogging program to monitor MAF voltage and Injector duty cycle. I've had my S4's sitting in my attic for months because I wanted to wait until I upgraded my MAF/Injectors/ECU. I just did the wiring for the MAF last night, today I'll be hooking up the new ecu and starting with the cams.