Speeding up turbo boost - how to?

[ROAMER_AUS]

So I have tuned up my fuel pump on 300 tdi, slightly advanced, resulting in cooler exhaust gases, and therefore, slower boost build up. Before it used to shoot up almost instantly as I hit the go pedal, now, I can feel the delay.

How do I get my turbo to spool up faster now? More fuel? I'm talking before wastegate comes into play.

Thanx!!!

[1nando]

Bigger exhaust and a boost valve to run more boost......



2.2 110 limited edition, Davis remap, intercooler, exhaust, terrafirma 30mm wheel spacers, snorkel, first four bb, apt tree sliders, apt diff guards, terrafirma rear bumprettes, mantec rear wheel carrier, Uniden UHF, hema HN7, roof rack, custom made rear draws, dual battery setup, hella ralye 4000 xenon lights, Engel fridge setup, puresine invertor.......coming soon upgraded suspension, diff locks and 33s, nearly finished......

[rick130]

More fuel.

If it's a 300Tdi, there's a few simple pump tweaks.

[ROAMER_AUS]

More fuel.

If it's a 300Tdi, there's a few simple pump tweaks.

Are you talking about smoke screw star wheel and diapraghm?

[sierrafery]

Check out the attachment maybe it helps, it has many pics and explanations on the subject

[rick130]

Check out the attachment maybe it helps, it has many pics and explanations on the subject


Ian's tutorial is the best I've seen. ;)

[ROAMER_AUS]

Yup. Have that document and had my pump tuned up already. But it looks like it will need more tweaking since the pump advance.

Thanx for advice all!

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[rick130]

The real fix is a Turbo Technics VNT, or compounds if you like to fabricate and fiddle.

[ROAMER_AUS]

The real fix is a Turbo Technics VNT, or compounds if you like to fabricate and fiddle.

But it is also a $ figure that I can't justify. So I'll tune it up best I can with what I have.

Sent from my GT-I9305T using AULRO mobile app

[rick130]

But it is also a $ figure that I can't justify. So I'll tune it up best I can with what I have.

Sent from my GT-I9305T using AULRO mobile app

I hear ya. ;)

I've actually just backed mine off in the last week, just too much soot, but I'm already missing the initial bottom end, particularly as I'm running 255/85's

[ROAMER_AUS]

I hear ya. ;)

I've actually just backed mine off in the last week, just too much soot, but I'm already missing the initial bottom end, particularly as I'm running 255/85's

When you say backed off you mean fueling? My initial take off reluctancy is back as well. Maybe that's another sign for more fuel.

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[PAT303]

I've been running LPG on my Tdi since 2007,it fix's the turbo lag. Pat

[rrturboD]

I can confirm that the addition of LPG was the quickest way to get 20% increase in HP and torque and without the aircond, so much quicker to get off the mark.

[ROAMER_AUS]

LPG would be good. But another costly upgrade. I'll report back once I tweak the pump a bit more.

Thnax for advices again!

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[rrturboD]

Before I added the gas, I removed the large centre muffler ... that helped, and made very little difference to the exhaust noise.
Re gas and the real $ involved ... forum member: Bee utey would be worth contacting, as he did my system.

[Leo109]

Hi All,

Thread hi-jack alert!;)
What sort of 'cricket ground'* dollars are we talking for an LPG system on a 300Tdi Discovery these days?:confused:

*cricket ground (AUS) = ball park (USA):D

[Eevo]

Hi All,

Thread hi-jack alert!;)
What sort of 'cricket ground'* dollars are we talking for an LPG system on a 300Tdi Discovery these days?:confused:

*cricket ground (AUS) = ball park (USA):D


5k?

[bee utey]

Hi All,

Thread hi-jack alert!;)
What sort of 'cricket ground'* dollars are we talking for an LPG system on a 300Tdi Discovery these days?:confused:

*cricket ground (AUS) = ball park (USA):D
The 300TDi being sold before the current crop of emissions regs can be done with a simple vapour delivery system, using a throttled down petrol system LPG converter. Costs are from $1500 and upwards, depends on a lot of different factors, mainly the cost and location of the LPG cylinder. Space under a disco is at a premium and the gap under the RH sill can only take a very small cylinder. Full electronic metering systems were developed for common rail diesels and cost a lot more, say $3K and up.