ABT

Incredible 3rd gear, more torque everywhere. Notice turbos more; Drivability: different!-everyone now knows when I'm going fast, especially w/ filter upgrade. Maybe need some springs to settle car, & perhaps an exhaust for breathing.

ABT

fast car

APR

EMCS is great. Love the control and ability to download additional programs. Also love the free upgrade policy.

APR

Turbo failure seems to have been due to a TBB failure at high altitiude (9000ft). Turbos were loud upon return from the trip. After replacement of turbos there were no further problems for another 5000 miles.

APR

This is the performance I had hoped for out of the box!

APR

Car is extrodinarily fast impresses everyone that has ridden in it or driven it.

APR

Turns the car into a rocketship, pure and simple.

APR

The car definitely needs some bigger brakes. Even more power would be even better. May be a stage II or III kit? 420hp?

APR

LOVE THE CHIP

AutoThority

Did a lot of research and drove several other chipped S4s. Hands down best service and performance from Autothrity.

AutoThority

Excellent service, very friendly. STrong chip and performance overall.

Garrett

Awesome chip - local dealer (Dynospot Racing, Mt View, CA) is excellent and in constant contact with Garrett, himself.

Garrett

Garrett S4 chip is VERY smooth

Garrett

Garrett chip seems excellent. Also, I've had no problems what-so-ever with my S4 and I'm at 19,100 miles.

Garrett

Very smooth throttle response, boost comes on strong but does not surge. Very smooth. Tons of torque.

Garrett

Nice smooth deliver of power. Also added the GIAC Tip Chip. Much better shifting response.

Garrett

Great fun...

Garrett

I am very happy with the chip, it's almost unbelievable how fast the car is now, but I am worried about reliability now.

Garrett

The chip is performing as advertized, and Garrett Lim is a terrific guy.

Garrett

Garrett chip and UUC exhaust combo make a great combination. I have had several stock S4 owners drive it and they can't believe what a difference it makes. This ride FLY's.

Garrett

Spools earlier - kicks ass!

Garrett

Waited 10 months to chip it.. Advice: Don't wait. The car accelerates effortlessly. No increased noise. The chip is as smooth as the stock chip, just much more power. Addiction in the making.

Garrett

The Throttle body is torn (It is the older L model). Other than that what a fantastic product. Delivers performance as promised with great smoothness, and no side effects til now.

Garrett

Chip installed by PES (performance engineered systems) of Flemington NJ. Would highly recommend anyone in this area who wants to chip, to contact them.

Garrett

My shop will even loan me a stock box when I go to service if I am paranoid. I was also told that there is an inherent warranty that Garrett has which says that if any problem is due to the chip, Garrett will pay for it.

Garrett

The GIAC software is VERY impressive

Hoppen (MTM)

Must Have upgrade

Hoppen (MTM)

Besides from the great chip, Bob and Pete at Stratmosphere were friendly, helpful, and very professional. It was a very nice experience.

Hoppen (MTM)

Very fast, and a blast to drive

Hoppen (MTM)

My car is uncomfortably fast, and silky smooth at the same time.

Hoppen (MTM)

more squeeks and rattles than an E55, but more fun to drive

Hoppen (MTM)

WOW!

Hoppen (MTM)

Wow.....wow. Huge power gain.

Hoppen (MTM)

The chip exhaust combo is great. MTM rules!!!

Hoppen (MTM)

Torque increase is dramatic, very happy with driveability.

Hoppen (MTM)

waiting to do stage 3

Hoppen (MTM)

LOVE IT!

Hoppen (MTM)

Tranformed the S4 from deceptively quick to damn fast. Best money I've spent on a mod.

Hoppen (MTM)

Joe Hoppen is very professional, and quality oriented.

Hoppen (MTM)

Performance now has to be experienced to be believed. Strong in all gears,very tractable even from low rpm no hesitation at all. Much better fuel consumption (if you treat it gently, i.e. more or less legal highway speeds.)

Neuspeed (Greedspeed)

My clutch has been slipping since I put in my chip. Who makes a little stronger clutch

T.A.P.

CHIP COSTED $650

T.A.P.

Because the mid range and the upper power band is so much stronger, it feels like I lost power in the lower rpms. What a rush from 3000 rpm and up!!

T.A.P.

The increased power is not all that noticable until 3000-3500 rpm

T.A.P.

I RECOMMEND THE T.A.P. STAGE 1 CHIP TO ANYONE AFRAID TO HURT THEIR ENGINE. ALMOST 20,000 MILES WITHOUT A FLAW. LLTEK CONE INTAKE MAKES HUGE DIFFERENCE W/ CHIP. FEELS AMAZING AND SOUNDS GREAT TOO.

T.A.P.

The S4 biturbo, stock, is powerful. Amazingly, this power only serves to make me want more power. Suddenly, 310 hp (estimated result of my mods) seems weak. Next up? The magic 400hp milestone. After the warranty is up...

Wetterauer

Amsiol synthetic (0-30) at 7.5K perhaps at the end of mar '00. This is an upgrade from my '97 1.8TQ auto. paid shipping chgs only. Vehicle is actually '00 A6 2.7T.

Wetterauer

None Great drivability: gears 3-6 are dynamite; 1-2 not a lot of gains in low end torque.

Wetterauer

I had exchanged my Wett 1.8T chip for the 2.7T chip $50.00 Now that is an inexpensive upgrade!

Wetterauer

My s4 has gotten alot quicker but I still need to upgrade even more due to the fact that I am getting my butt kicked by upgraded Mitsubishi evolution Lancer's.

Wetterauer

transformed an already quick car into a rocket. increased power throughout rev band with only slight "flat spot " in first gear from 3000-4000 rpm under moderate throttle.

Wetterauer

I went to the 'factory store' and had chip installed. Watched as they down-loaded the program for the 2001 chip and write it to the chip. Interestingly simple. Works good. Feels good. Commute 190 miles/day. Added shifter too. Well worth cost.