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2.9 TB on 2.8 HELP


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Hi all,i fitted a ported 2.9 TB to my 2.8 VR on Sunday.all was well and the throttle was very snappy and noticed a good improvement!.monday noticed it felt like it was sticking on slightly when foot is taken off the gas pedal.reset throttle body-still the same,checked all linkages and sprayed lubricant.checked on vag-com,no fault codes.the car pulls really well,ticks over at 600ish rpm,am i missing something? or does it need a remap,any help from u VR expert?cheers.

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The carbon tracks inside the throttle position sensor could be worn if the revs are sporadic, otherwise cable as mentioned already. The 2.9 cable quadrant is different to the 2.8 one, so you need to make sure the cable is set correctly with enough free slack.

If you look at the TPS in VAG-COM's measuring blocks with the igntion on, the throttle angle should increase smoothly. If it jumps up in blocks, it's worn out. Also make sure you've got 90 degrees at full throttle and <14 at rest.

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