boost gauge

B5-PJ · May 1, 2016

hi guys,
im wanting to fit a boost gauge to my 1.9tdi after turbo issues (now resolved) anyone have a guide to fitting as i cant find anywhere to 't' into for the gauge, have googled to no avail

thanks in advance

desertstorm · May 1, 2016

If you fit an EGR delete then most of these have a pressure tapping for a boost gauge.
Alternatively you can use one of these boost taps into a hose.
http://www.ebay.co.uk/itm/Tdi-diese...out-4mm-6mm-t-piece-nipple-tap-/182113078390?

http://www.ebay.co.uk/itm/BOOST-GAUGE-QUICK-TAP-FOR-ANY-CAR-KKK-K04-KO3S-GARRETT-/151308206893?

Also you could tap an 1/8 NPT hole into a suitable point and screw a boost tap in.

http://www.ebay.co.uk/itm/1-8-NPT-t...acuum-Hose-Boost-Turbo-Adapter-/371375908695?
http://www.ebay.co.uk/itm/1-8-27-NP...lute-Taper-Pipe-Tap-1-8-27-TPI-/401048262801?

B5-PJ · May 1, 2016

i have took off the pipe from egr to block yes but doesnt have a piece to put pipe on

desertstorm · May 1, 2016

OK thought it might be a PD engine. That looks like an AFN 110 bhp engine. You can use the boost taps in the hose or drill and tap the manifold.

B5-PJ · May 1, 2016

ah its a tdi red i so possibly

B5-PJ · May 2, 2016

hi guys me again, just wonder if anyone knows the stock boost pressure my car should be running or know where i can find the info

Fire26662 · May 2, 2016

My AFN was running 2.1 bar peak. It is now running 2.3 after the EGR blanking.

B5-PJ · May 2, 2016

Fire26662 said:
My AFN was running 2.1 bar peak. It is now running 2.3 after the EGR blanking.

was this stock or mapped?

Fire26662 · May 2, 2016

Totally stock except for the blanking plates

aragorn · May 3, 2016

If those figures came from VCDS, they're absolute pressure, not boost.

Fire26662 · May 3, 2016

aragorn said:
If those figures came from VCDS, they're absolute pressure, not boost.

yes very true ok my MAP is 2.3bar peak when doing a turbo test on the road. After fitting my 1st attempt of the blanking plates, the next task is to drill and tap the inlet plate to take a boost gauge fitting. If and when I find the boost gauge I like. I also have another one to do but the owner of that one wants a boost gauge, EGT gauge and an oil pressure gauge, so I am using mine as a test bed or guinea pig. I must admit I was a little sceptical about blanking the EGR but... The engine is a lot more responsive, and it hardly smokes at all. As for the slight increase in MAP pressure I can only assume that some inlet pressure was leaking through the EGR valve.

desertstorm · May 3, 2016

So to avoid confusion for the OP 2.3 bar absolute is around 1.3 bar boost which is 14.7 x 1.3 = 19 PSI.
Which sounds about right to me.

aragorn · May 3, 2016

If your wanting multiple gauges, look into these PanelPilot displays:

https://www.dropbox.com/s/u7vnjklf3bg3mi1/2016-05-01 18.13.17.jpg?dl=0

Fully customisable, you just need sensors that provide a linear voltage output. I've not connected my oil pressure sensor up yet hence the negative reading.

Fire26662 · May 3, 2016

Pretty, where you get them from?

aragorn · May 3, 2016

http://uk.rs-online.com/web/p/digital-panel-multi-function-meters/7048138/

If you go onto the Lascar Electronics website you can download the programming utility and have a play with it. Those are "PanelPilot M", they also do a much shinier more advanced one called the PanelPilot ACE so make sure you get the right program.

They look expensive initially, but when you start adding up the costs of quality guages, vs the cost of one of those displays and some sort of controller to drive the input, it works out quite favourable.

My AFR guage is powered by a Spartan2 OEM wideband controller which was 40quid, the lambda sensor itself was 40quid, and if we assume half the cost of the display, then its a full AFR guage for £110. The oil pressure sensor was £45, so the oil display will have cost 75

Fire26662 · May 3, 2016

I do like the look of the SGD 24-M. I might be tempted to invest in some of those.

B5-PJ · May 3, 2016

with my boost gauge running from a drilled port in the inlet 1.1 1.2 is about right with egr blanks

AlexA4Avant · May 4, 2016

On my td4 freelander and volvo I used a piece of tube that fitted drilled a hole 4mm then welded a 6 mm od piece of pipe to it then clamped a straight silicone piece to the inlet manifold was the best place I could find was boosting 1.5 bar on both cars

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