TDI FAQ - Dump Valves, Part Nos and much more info - Start Here

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Editing your spelling
Please note this is a merge from the old TDI FAQ, some links might be missing the old pics for example and some info might need updating. This thread can continue to be updated by adding new posts to it. Note that a general search of the TDI section can yield new results on old topics so for the latest information this searching is recommended.

Use these as guides. We make no guarantees as to the accuracy of this information, so use at your own risk. The owners and administrators of SEATCUPRA.NET will not be liable for any damage incurred after trying something stupid, and completely destroying you TDI.

New to diesel
http://www.seatcupra.net/forums/showthread.php?s=&threadid=29712

Discussion and a very conclusive method for running in your TDI from an experienced TDI club member :-
http://www.seatcupra.net/forums/showthread.php?p=540546#post540546

VAG TDI OIL APPROVALS
505.00 - Diesel, SDI, TDI (90hp &110hp)
505.01 - PD TDI engines (115hp,130hp,150hp,75hp 1.4tdi, 2.5l (150,163 & 180hp), 3.3l, and the all new 4.0l)
506.01 - Diesels with variable service

MAF information:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27511
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27782
http://www.seatcupra.net/forums/showthread.php?s=&threadid=26209
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23771
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28247 (Mercedes Pierburg MAF thread)

Info on Modified turbos :
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24149

Tuning Box info:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=26686
http://www.seatcupra.net/forums/showthread.php?s=&threadid=25694
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24729
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28015
http://www.seatcupra.net/forums/showthread.php?s=&threadid=25178
http://www.seatcupra.net/forums/showthread.php?s=&threadid=22275

How to get more fuel in your tank ("venting"):
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24355

Running in a TDI
http://www.seatcupra.net/forums/showthread.php?s=&threadid=22790

EGR
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27813
EGR mod problems with MY 04 TDI's :-
http://forums.tdiclub.com/showthread.php?p=663554
Further TDI EGR info here:
http://www.seatcupra.net/forums/showthread.php?t=38535

CAT Removal & Exhaust info:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27364
http://www.seatcupra.net/forums/showthread.php?s=&threadid=26859
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24652
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23223
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23088
http://www.seatcupra.net/forums/showthread.php?s=&threadid=20756
http://www.seatcupra.net/forums/showthread.php?s=&threadid=14144

VNT & Non-VNT turbo info:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24571
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23074
http://www.seatcupra.net/forums/showthread.php?s=&threadid=17645
http://www.seatcupra.net/forums/showthread.php?s=&threadid=17520
http://www.seatcupra.net/forums/showthread.php?s=&threadid=14514
http://www.seatcupra.net/forums/showthread.php?s=&threadid=5159
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23766
http://www.seatcupra.net/forums/showthread.php?s=&postid=293491#post293491

Difference between 130tdi and 150tdi turbo:
http://www.seatcupra.net/forums/showthread.php?t=39523

Discussion on turbo boost:
http://www.seatcupra.net/forums/showthread.php?t=36341

Paulos information on when changing from a 130 turbo to a 150 turbo :-
http://www.seatcupra.net/forums/showthread.php?t=46355

A very very simplified diagram and explanations of how a turbocharger works
http://auto.howstuffworks.com/turbo.htm

MPG threads:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24404
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24360
http://www.seatcupra.net/forums/showthread.php?s=&threadid=25900
http://www.seatcupra.net/forums/showthread.php?s=&threadid=20085

Badges:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27235
More rear badge stuff:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28858

Injector Swaps:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28188
http://www.seatcupra.net/forums/showthread.php?s=&threadid=7847
http://www.seatcupra.net/forums/showthread.php?s=&threadid=8312
http://www.seatcupra.net/forums/showthread.php?s=&threadid=10001

See this rather techy post for more in depth details of the PD pumps/injectors
http://www.seatcupra.net/forums/showthread.php?t=54968

Down on power
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28031

TD tuning box for 110 owners

http://www.seatcupra.net/forums/showthread.php?s=&threadid=28603

_____________________
Brief 110 Tuning box Q&A

What sort of box would I need?
Either a 8 or 10 pin tuning box, dependant on age of car, but generally any 2000 onwards cars are 10 pins on the connector to the fuel pump. Can be found under the engine cover, behind the dipstick. Generally any tuning box for the old 90 or 110 engine is suitable, but two people I know have a www.tdperformance.co.uk one with good results.

Where do i get one from?
From the web site above if u want one of them, but there are loads now available on ebay, where they can be bought for as cheap as £99

How easy are they to fit?
Simple, just remove engine cover, unplug socket as above pug in the box, put engine cover back on.

When fitted, what would bhp, torque and performance figures go up to? For your 110, you can expect another 30bhp and 30lb ft of torque. You can expect to knock a second or two off your performance figures.
___________________

TDI 110 and injectors
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28188

CCV bypass thread
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28716
http://www.seatcupra.net/forums/showthread.php?s=&threadid=33405

Intercooler information:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=29019
http://www.seatcupra.net/forums/showthread.php?s=&threadid=22449
http://www.seatcupra.net/forums/showthread.php?s=&threadid=21155
http://www.seatcupra.net/forums/showthread.php?s=&threadid=17252
http://www.seatcupra.net/forums/showthread.php?s=&threadid=13861
(wheel arch venting for IC)
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24237
(IC design)
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27243
Intercooler problems:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=37184

SPT & other improved breathing (intake info):
http://www.seatcupra.net/forums/showthread.php?s=&threadid=21110
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24028
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23223
http://www.seatcupra.net/forums/showthread.php?s=&threadid=15921
http://www.seatcupra.net/forums/showthread.php?s=&threadid=23083
http://www.seatcupra.net/forums/showthread.php?s=&threadid=27977
http://www.seatcupra.net/forums/showthread.php?s=&threadid=24908

Air Filter information:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=25397
http://www.seatcupra.net/forums/showthread.php?s=&threadid=19218

Engine coolant sensor part no for Leon / Toledo
http://www.seatcupra.net/forums/showthread.php?s=&threadid=29427

Leon / Toledo Part number for expansion bottle :-
1j0121403b (VW Dealership supplied)
This covers the on Start-up (Cold) Engine Temp Bleep Flash Light... Which can be over come quickly by just simply switching off & back on again, or Change the expansion bottle / Sensor top right fails but it is incorporated within the bottle..

Merc MAF Fitting and results
http://www.seatcupra.net/forums/showthread.php?s=&threadid=29581
http://www.seatcupra.net/forums/showthread.php?s=&threadid=30115

TDI clutch bearing problems:
http://www.seatcupra.net/forums/showthread.php?t=36212

__________________

See the link below for a technical PDF on the workings of the VAG TDI engine, it’s the 90/110 version shown but most of the principles are the same for the PD just the injection system will differ. A very, very useful official VAG document.

http://www.seatcupra.net/files/tdi-tech.pdf
__________________

Thread about standard Ibiza 130 air filter & part number:
http://www.seatcupra.net/forums/showthread.php?s=&threadid=28776

160PD Ibiza Cupra intake for the Ibiza 130PD (from Muddyboots)

6LL 129 621 - bumper end connecting bit
6LL 129 618 - main pipe from airbox

Installation:
Quote:
Referring to the parts as:
Front inlet -> Adaptor -> Pipe -> Airbox
...where the Adaptor & Pipe are the bits being changed, this is how I did it:

1) Remove cross-head screw from airbox, pull old pipe out of airbox so the end is free
2) Remove 2 torx screws from front inlet, lift whole assembly out.
3) Prise front inlet off of old adaptor & hose. Chuck the old adaptor & hose.
4) Fit new hose into airbox and refit the crosshead screw
5) Clip new adaptor into front inlet
6) Refit front inlet & new adaptor using 2 torx screws (whilst pushing new pipe down out of way)
7) Bend the new pipe over the new adaptor and push together, pretty fiddly, requires a fair bit of bending of the pipe (which is quite flexible).

Some interesting maintenance videos by the tdiclub.com guys can be found here
http://pics2.tdiclub.com/video/cincitdi/index.html

PD 100,115,130,150 and 160 engine internal part number differences:
http://www.seatcupra.net/forums/showthread.php?t=68606

2.0 TDI 140 and 170bhp differences (cheers to stocky) :-
http://www.seatcupra.net/forums/showthread.php?t=93280

Silicon Dielectric Grease - Smoother running, more responsive & less smokey TDI!!
http://www.seatcupra.net/forums/showthread.php?t=101577

Diesel dump valve information
http://www.seatcupra.net/forums/showthread.php?t=235874

DPF Emergency regeneration
http://www.seatcupra.net/forums/showthread.php?t=131536

110 vacuum system and other diagrams
http://www.seatcupra.net/forums/showthread.php?t=207787
 
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