quick question vacuum gauge

[Big_daddy]

Done a search but no luck. Just fitted a boost/vacum gauge, not sure what is the correct pressure on idle when the car is fully warmed up. the vacum reads from 0-500-750. that in mmHg.

 

[s1l3nc3r]

I will have a check of mine when i go home tomorow and let you no. but off the top of my head i think its between 0 and -1 bar but dont hold me to that...

You still having running problems with yours then..??

 

[Big_daddy]

This is my gauge when the car full warmed up, its sit on 500.

Yeh sort off, changed the n75, maf and pre 02 sensor. It just peaks to aroun 0.85bar and starts tailing off. Guna get the map changed as my last result.

 

[-pseudonymous-]

Sounds about right mate. 500 mmH on your gauge is the equivalent to 19.7 inHg on a psi boost gauge which is around what mine used to read.

 

[EZ Tutty]

yeh as above sounds spot on, my gauge reads 20inHg (which is about 508mmHg)

 

[-pseudonymous-]

It just peaks to aroun 0.85bar and starts tailing off. Guna get the map changed as my last result.

Thats a very mild map if it only peaks at 0.85bar (12.3psi). How much boost does it request?

 

[s1l3nc3r]

Man you could of got a more simple gauge to read looks nice though

Worked it out and coverted it on this site http://www.sensorsone.co.uk/pressure-units-conversion.html

It looks about right but i will double check for you.

mine boosts 1.4-1.5 bar peak before tailing off.

 

[Big_daddy]

Thats a very mild map if it only peaks at 0.85bar (12.3psi). How much boost does it request?

Here quick log (Just look at boost request).

	Group A:	'003				Group B:	'115			
		RPM	Mass Flow	Load	Ign. Timing		RPM	Load	Absolute Pres.	Absolute Pres.
	TIME					TIME				
MARKER	STAMP	 /min	 g/s	%	 °BTDC	STAMP	 /min	%	 mbar	 mbar
	0	2160	36.75	100	13.5	0.4	2280	92.5	1880	1250
	0.82	2360	53.25	100	5.3	1.31	2560	124.1	1890	1680
	1.71	2760	70.58	99.6	6	2.11	2920	133.8	1910	1810
	2.51	3080	80	100	10.5	2.91	3240	139.1	1870	1830
	3.31	3400	91.78	100	9	3.71	3560	139.1	1840	1840
	4.11	3760	97.5	100	12.8	4.51	3920	137.6	1860	1820
	4.91	4080	108.92	100	13.5	5.31	4240	138.3	1850	1810
	5.71	4400	119.64	100	15	6.11	4560	142.1	1830	1810
	6.51	4680	130.78	100	12.8	6.91	4840	145.1	1830	1820
	7.31	5000	138.03	100	14.3	7.71	5120	144.4	1840	1820
	8.11	5240	142.83	100	12.8	8.51	5360	140.6	1830	1800
	8.91	5480	142.78	100	12	9.31	5600	135.3	1810	1790
	9.71	5680	144.08	100	12	10.21	5840	133.1	1790	1740
	10.72	5920	146.89	100	13.5	11.12	6040	129.3	1730	1720
	11.52	6120	149.47	99.6	12.8	11.92	6200	127.8	1440	1710

 

[s1l3nc3r]

As said above mate your vac is reading fine..

12 psi is very low though for a mapped cupra...what map is it..??

iirc i think the cupra r ecu peaks boost about 12psi

 

[Big_daddy]

Its a AMD map.

 

[s1l3nc3r]

Im guessing youve spoke to AMD about it...??

Why not take it to them to have a look at..?

 

[Big_daddy]

Im guessing youve spoke to AMD about it...??

Why not take it to them to have a look at..?

Did ring them up to enquire about it, they say about right. Just dont have the time to drive up there as i need most of the day to do it.
Gettin a alternative map this week so hopefully, this should insreaces it.

 

[s1l3nc3r]

Did ring them up to enquire about it, they say about right. Just dont have the time to drive up there as i need most of the day to do it.
Gettin a alternative map this week so hopefully, this should insreaces it.

Yea dont see how it can be about right if my one peaking at nearly double that...and the same with 95% of other stage 1 maps..

Well if you exhausted every other option then spose it could be map related...

 

[Big_daddy]

Well when i baught the car it was prettey standard and came with amd map, so i asume they fittied a mild map on it.

 

[Big_daddy]

Yea dont see how it can be about right if my one peaking at nearly double that...and the same with 95% of other stage 1 maps..

Well if you exhausted every other option then spose it could be map related...

Do you have any boost logs so i could compare?

 

[tommy2008cupra]

mine reads 25-26 hg when warm on idle where is yours plumbed in?

 

[Big_daddy]

mine reads 25-26 hg when warm on idle where is yours plumbed in?

T-peiced with dv connected to the T/b vacum port.

 

[tommy2008cupra]

i got mine running from brake servo hose on left side of the engine just cut off green cap and run it from there much more accurate

 

[Big_daddy]

i got mine running from brake servo hose on left side of the engine just cut off green cap and run it from there much more accurate

Is it?, I find trottle vacum more responsive al though the gauge is top notch too.

 

[tommy2008cupra]

well try it my gauge was much more accurate after putting it there daves ibiza told me to do it and was pleased with the results