Audacs4

I recently picked up a 2000 S4, and have been reading about chips with interest. My understanding is that my S4 will run OK with standard unleaded, but performance will improve with premium fuel.

What are the drawbacks/consequences of chipping the engine? I'm aware that there might be warranty problems. Does chipping require premium fuel only?

I'm also planning on the UUC short shifter.

katana

I think all S4s should have premium regardless of chip.

SmokinS4™

RTFM ... The manual says 92 octane MINIMUM. I always put in Ultra94

katana

I got gas at '76' today and noticed the 92 was actually 91. WTF?

SFSILVER2000S4

More HP and torque. Oh, you also get better gas mileage. It sucks, don't get the chip

PhoenixGTS

drawbacks are only two as far as I see, and the second one isn't really a drawback, just a reality: 1) unless you live where I do, your dealer will give you crap for having different firmware and deny warranty claims; and 2) the difference in performance between good gas and bad gas and cold weather and hot weather will be greater than with the stock programming.

Wood

Read it last night & compared to the 92 on the pump. We hardly ever see higher octane than 92 in Seattle.

PhoenixGTS

Where are you at that you get 94 octane? What brand?

Andy Hedin

Sunoco Ultra 94, East coast

SmokinS4™

And work pays for it! HaHa