chip difference...

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Mar 23, 2003 | 08:50 AM

satanA4

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chip difference...

about a month ago i purchased a 2000 vw gti 1.8t instead of another new A4 or used S4 to join my current b6 (decided to put the money towards a house). the gti has a apr chip while my audi has a giac.
the gti seems to pull more consistent where the audi seems somewhat sporadic. i know there is a vehicle weight difference but has anyone driven a apr audi and a giac audi?
i am now on the fence about a turbo upgrade. will a t-28/giac feel sporadic and a k04/apr feel more consistent?

Mar 23, 2003 | 08:54 AM

ex-quattro PETE

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From: Michigan, USA

APR chips are known for "smoother" power delivery, at least on the B5 A4s.

Mar 23, 2003 | 09:02 AM

formerly dennisA4

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I've driven an APR b6 and it's smooooooth. So was my own apr beetle. Never drove giac though.

Mar 23, 2003 | 09:06 AM

UFfitz56

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GIAC is just as smooth as stock also

Mar 23, 2003 | 09:07 AM

lawong

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I've VAG logged both torque measuring blocks on a GIAC, APR Stage I, and APR Stage I+

And I've found that the GIAC torque hits its ceiling (185 ft lbs) immediately at 2500 RPMS, whereas the APR Stage I and I+ hit about 175 ft lbs. at 2500, then climb to ~190 (Stage I+ goes to ~197) at 4000 rpms. Of course this all depends on how accurate the VAG is logging these readings.

I haven't had a chance to verify these readings with another run on each of these cars, but someday I'll post my results.

Mar 23, 2003 | 09:42 AM

vx211

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ill 2nd that

Mar 23, 2003 | 11:47 AM

Akita

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If you look at the published (m)

torque curves, you'll see that the APR has a curve is very similar to the stock one in shape. You can feel this driving an APR chipped car. The car feels stock, almost deceptively so, until you notice that things are happening a lot faster than they did before chipping. Some people (myself included) like this. Others like GIAC's "kick-in-the-pants" approach. It all boils down to personal preference. When all is said and done, the actual numbers are very close.