stock boost levels for 1.9 TDI ?

[85turbo]

Hi all.

can someone please tell me what the factory boost level is for the 1.9 PD TDI mk5 Golf ?

i read somewhere that it's 2.1 bar ? that sounds a little high to me.
that's 30.87 psi. that sounds like lots for a stocker.....(my first experience with a diesel, so i have no idea what's normal)

im about to buy a boost gauge, and wanna make sure i get one that has the correct range.
i plan to have the ecu flash tuned at a later date too, so some leeway will be needed, as i don't want to be replacing the gauge in the future.

can anyone shed some light ?

Jason.

[GoLfMan]

I've heard its around 18-20?

I need to buy a boost guage aswell and check it out, I too am curious!

[Transporter]

Hi all.

can someone please tell me what the factory boost level is for the 1.9 PD TDI mk5 Golf ?

i read somewhere that it's 2.1 bar ? that sounds a little high to me.
that's 30.87 psi. that sounds like lots for a stocker.....(my first experience with a diesel, so i have no idea what's normal)

im about to buy a boost gauge, and wanna make sure i get one that has the correct range.
i plan to have the ecu flash tuned at a later date too, so some leeway will be needed, as i don't want to be replacing the gauge in the future.

can anyone shed some light ?

Jason.

From 0.9 Bar @ idle up to 2.1 Bar

[85turbo]

Thanks Transporter.

2.1bar! That's impressive.
I'll head out on the weekend and pick up a 35psi gauge.

Hopefully that's enough to cover any changes that are made
once I eventually get round to the re flash.

Jason.

[h100vw]

Diesels tend to run almost twice the boost of a petrol car.

Gavin

[85turbo]

im learning lots about this little diesel.
being my first oiler and all.... it certainly wont be my last that's for sure.....

Jason.

[Greg Roles]

Just for the record, if you run the sender from the inlet manifold, to get true pressure rather than straight out of the turbo for a feel good reading, my stock GT TDI runs 23-24psi maxed. Looks a bit silly on my 0-60psi gauge....for now.

[85turbo]

i plan to tap the pipe after the intercooler, and before the inlet.
so this should take into any pressure drop across the cooler.

Jason.

[recalibrate_ecu]

Boost

Hi,
2.1 bar is absolute pressure which is atmospheric air pressure + pressure generated by turbo.
Atmospheric is around 1.0 bar depending on height over sea level.
Hope this helps?

Hi all.

can someone please tell me what the factory boost level is for the 1.9 PD TDI mk5 Golf ?

i read somewhere that it's 2.1 bar ? that sounds a little high to me.
that's 30.87 psi. that sounds like lots for a stocker.....(my first experience with a diesel, so i have no idea what's normal)

im about to buy a boost gauge, and wanna make sure i get one that has the correct range.
i plan to have the ecu flash tuned at a later date too, so some leeway will be needed, as i don't want to be replacing the gauge in the future.

can anyone shed some light ?

Jason.

[85turbo]

so what your saving is that i will only see 16.17psi on the gauge (ie:1.1 bar) ?

1 bar is roughly equal to 14.7 psi, or like you say one atmosphere.

This is starting to get confusing..... lol

Jason.

[recalibrate_ecu]

Correct

Hi, yes if you connect a boost gauge you will see 16-17 psi.
If you use vag-com it records absolute boost pressure as mentioned in my previous post.
If you live at high altitude there is less air pressure say .9 bar and you add 1.1 bar which totals give 2 bar, 1.5 psi less than at sea level.
Hope this helps?

so what your saving is that i will only see 16.17psi on the gauge (ie:1.1 bar) ?

1 bar is roughly equal to 14.7 psi, or like you say one atmosphere.

This is starting to get confusing..... lol

Jason.

[mikinoz]

So the 1.9 is lower boost than 2.0 based on this information?

[gldgti]

So the 1.9 is lower boost than 2.0 based on this information?

likely to be - it produces less power stock

hahaha - i run 22psi guage.... gee thats nearly GT levels. wait till i get my t3 on there... if ever

[mikinoz]

The gauge in our car (2.0TDI) can hit 30 when you give it some kick, but it soon backs off thanks to VNT reducing the pitch.

[85turbo]

so, figuring in that i will probably be having the ecu re flashed at a later date, should i get a 30 or 35 psi gauge ?

Jason.