[s-cars] [NurSC] Optimized garret chip... should I be scared

[Andrew Beckert]

garrett is *Garrett* Integrated Automotive Corp aka GIAC, as sold by
AWE-tuning and tons of other places.  One of the top chipsets alongside APR
for the 2.7TT.  The custom tune is perfectly normal and 337hp is about right
for an S4 with chip/exhaust combo.  He could also be making slightly more
power if the car was tuned for 94 octane, so you will probably be down on
power a bit with 91 (310ish).  Stock hoses on these cars do just fine.  The
throttle body boot used to rip before Audi started using a revised clamp.  I
would be more concerned about the bpv's and swapping to 710n's or something
aftermarket would be a better investment than a full samco hose kit.

Andrew

On 12/5/08, Vincent Fregeac <vfregeac at gmail.com> wrote:
>
> Hi,
>
>
>
> Tomorrow morning, I'm going to test drive, and may be buy a 2000 S4TT with
> an < optimized > garret chip. Basically, the owner installed a garret chip,
> brought the car to a guy specialized in VAG turbo engine, and had it
> custom-mapped. Resulting output: an estimated 337hp calculated from
> acceleration before-after the custom-map. The car is tempting since it
> comes
> with real RS4 wheels (plus a set of 16" Audi mags for winter), a custom
> cat-back double-2.5" exhaust (I hope it doesn't sound too ricy) and is told
> to be immaculate except for the driver carpet (The owner must be some kind
> of AR to mention_that_).
>
>
>
> I don't know about garret chips, but I know some chips, like TAP, are not
> really nice to the engine. Should I be worried about garrets?
>
>
>
> On the plus side, the guy has a full log book, including gas receipt,
> always
> filled his S4 with 94 octane (there's may be one gas station out of 20 that
> carry 94 around here, super is 91 usually), and still has the log book of
> his previous car ( a Golf 1.8T) that run 2 years on an chip optimized by
> the
> same specialist. Also, he just bought a new V8 S4 so the reason he sells
> the
> car _may_ not be he ruined the engine, the turbos and everything inbetween.
>
>
>
> I know I'm in for a Samco set (the fact that he didn't blow off the stock
> intake hoses with a 337hp chip already tells he was not really "using" his
> chip), and a reinforced intake V.
>
>
>
> The questions are:
>
> -          What should I look for signs the engine didn't like the 337hp
> custom map?
>
> -          The owner said the engine was pushed to 337hp by enriching the
> air/gas mix at high hps to protect the internals. It sounds weird to me as
> a
> 35% hp increase is usually beyond the capability of stock injectors, even
> more if you plan to run rich (but I know almost nothing about the 2.7T
> injectors capabilities). So, is there any truth in this?
>
> -          What should I plan as safety mods if I want to keep the 337hp
> custom-mapped chip?
>
> -          The chip was installed in April. Is 8 months enough to ruin an
> engine or turbos with 337 hp?
>
>
>
> In case you ask: Yes, I plan to chat with the specialist who custom-mapped
> the chip before I make my final decision to see if what he tells me sounds
> "reasonable".
>
>
>
> TIA.
>
>
>
>
>
>
>
> Vincent who may feel a little less slow despite the new urR8 LMS F
>
>
>
> P.S.: Sorry for the WOB about an S4TT but I trust you guys much more than
> the AW forums
>
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