98 VW TDI

Cwhicker

New member
Joined
Aug 27, 2020
Location
Virginia
TDI
98 VW beetle
Trying to figure out how and what parts are best I’m new to this TDI stuff would like to do a cold air intake and a better throttle body.

What are some good parts and stuff I should try ?

thanks.
 

Nero Morg

Top Post Dawg
Joined
Oct 19, 2017
Location
OR
TDI
2003 Jetta wagon, 2001 Jetta TDI, 2014 Passat TDI
Welcome to the forums! We'll need to know a bit more about your car to get you goin in the right direction. For a 1998, you could have either an AHU engine, or an ALH. What car do you have? Golf, jetta, New beetle?

Also, just as an FYI, these diesels don't have a throttle valve, and it's been proven over and over again the stock intake ducting is more sufficient than cold air intake on them.
 

Mongler98

Top Post Dawg
Joined
Mar 23, 2011
Location
Northern MD (HAGERBUSH)
TDI
98 Jetta TDI AHU 1.9L (944 TDI swap in progress)
Good lord
Not again
Also you have no throttle body.
You have a long way to go to not sound like a 16yo troll from back in the 2000s.
You have an extremely old engine that has a lot less support for performance now days.
Anything you do other than a light 1.5 tune is going to now or eventually blow the clutch.

Change the clutch.
Some light upgraded nozzles. 502s are good, bigger turbo, and a tune and a few bits here and there, pd130 or 150 manifold for instance. You have a lot of reading to do. Plan in 3 or 4 grand to do anything that will compare with a modern power level.
 

Mongler98

Top Post Dawg
Joined
Mar 23, 2011
Location
Northern MD (HAGERBUSH)
TDI
98 Jetta TDI AHU 1.9L (944 TDI swap in progress)
What you need to do is get all the fluids, filters, rubber bits (belts hoses) and timing belt up to date and the car running in proper order, refresh the suspentio. And find and fix your rust. You have it. They all do. All of them. From the factory! No seriously!
 

oilhammer

Certified Volkswagen Nut & Vendor
Joined
Dec 11, 2001
Location
outside St Louis (where it's safe)
TDI
There are just too many to list....
Good news is your car left the factory with a cold air intake, same as every other car since about 1980 did. It also runs at wide open throttle all the time, and is limited by fueling and that teeny weeny turbo. The inlet is about the size of a silver dollar, you cannot force-feed it. Unless you have another turbo....
 
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