Thinking about buying a 2004 A6 2.7T. I just passed on a chipped up "used"
2000 model.

The guy selling the 2000 said that his chip did not void any warranty, but
that the 2004 warranty would be voided by a chip. Before I even ask the
dealer such an inflammatory question, looking for any wisdom here.

Also, can someone summarize the trade-offs involved in chipping (assuming
you do the suspension/ air intake mods to go with it)? Does gas mileage
suffer? If so, can this be turned off with the APR chip for long trips when
mileage might be paramount to speed?

Can also confirm better mileage after having my A41.8TQ chipped. Basically,
what happens is there is more torque available at the same level of throttle
flooring, so you do the maths.

No reliability issues in my case. Oil consumption being close to nil. The
only thing that might suffer if you're getting a manual will be the clutch.

My two cents,

JP Roberts
"rkj" <rkj (AT) cox (DOT) net> escribió en el mensaje
news:RoDdb.36636$vj2.10159 (AT) fed1read06 (DOT) ..

In article <RoDdb.36636$vj2.10159@fed1read06>, "rkj" <rkj (AT) cox (DOT) net>
wrote:

Hi,
First off - The 2.7T can be made MUCH more powerful with only a chip. I
have an S4. Stock its about 250HP/260ft lbs - Chipped, with the APR, I
am pushing 318hp/366Tq.

Its a huge difference.

The engine block is essencially the same as the one in an RS4. Which is
over 400HP, so I wouldnt worrry about that.

BUT -There are trade offs.

The stock diverter valves can fail. Mine did. There are 2. I could hear
a whine/ hiss sound and I was loosing power. I replaced mine with the
Bosch part # listed for the Porsche 911 Turbo. Parts cost about $90.00.

The Throttle Body boot is another weak point. It can go anyway, but
chipping just makes it go sooner. Mine went. Big time power loss.
Flooring it on the highway, while on a hill I was still slowing down. It
had 2 holes in it! replaced it with an aftermarket one, which had Kevlar
around it. Parts cost about $100 shipped.

If you are someone who likes the extra power, I definitely recomend it.

I did mine just as my warranty was ending. But I did have one repair
under warranty while I was chipped. My MAF went bad. They didnt say
anything. I do have the APR, and I put the car in non chipped mode when
I dropped it off.

Best of luck,

Adam