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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old December 13th, 2017, 06:54   #1
Join Date: Oct 2012
Location: Pittsburgh, PA
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Default 99.5 VAG question

Can i make adjustments to IQ using a VAG on a 99.5? I thought i read somewhere you can't port flash or whatnot on the 99.5, and you have to chip it...
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Old December 13th, 2017, 07:19   #2
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I think you're cornfusing a tune with using VCDS.
Saying no to gas for 25 years:

Current: 02 Jetta, Auto; 98 Jetta, 5 Spd; 98 Dodge, 5 Spd, SB, 4x4; 84 Grand Wagoneer with Nissan SD33T, NV4500, Dana 300, Reverse Cut Dana 44, Dana 60

The Black Sheep (Only gasser): 85 CJ, 4.2 w/4.0 Head and Mopar FI.

Past: 85 Mitsubishi PU, 4D55T; 81 Rabbit, 1.6; 80 Dasher, 1.5; 79 Rabbit, 1.5
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Old December 13th, 2017, 07:38   #3
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You can make IQ adjustments in your car with VCDS.
2002 Jetta wagon, 375K, RC3+; 1993 Mercedes-Benz 300D 2.5, 197K; 1997 Passat, 286K; '99.5 Golf, 259K; 2011 335d, 56K; 2015 Golf Sportwagen, 11K. Principal, http://www.idparts.com
Kid's cars: 2002 Golf TDI, 2002 Jetta TDI
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Old December 13th, 2017, 18:43   #4
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The adjustment is finite but there's the Hammer Mod to do it outside those parameters.
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