High Cf's on Gt2x

[DaNnY_LaD]

Im not too sure wether this is the right section as my gt2x isnt really a ''Big'' turbo..

But here it goes...

I done some logs last night and im getting stupidly high timing pull and Low Maf reading a 3'' tube?

	Group A:	'002				Group B:	'020			
		RPM	Load	Inj. On Time	Mass Flow		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
	TIME					TIME				
MARKER	STAMP	 /min	%	 ms	 g/s	STAMP	 CF	 CF	 CF	 CF
	0.01	2320	9	1.23	4.19	0.38	0	0	0	0
	0.89	2440	57.9	6.97	28.75	1.29	7.5	4.5	6.8	6
	1.69	2600	63.2	6.56	32.61	2.09	6	3	4.5	4.5
	2.59	2800	69.2	7.38	38.5	3.01	6	3	3.8	4.5
	3.5	3040	85	9.43	53.06	4	6	3	1.5	4.5
	4.49	3400	114.3	14.35	81.06	4.89	6	3	0.8	3
	5.29	3800	136.8	18.45	103.94	5.81	5.3	6	3	5.3
	6.21	4280	157.1	21.73	130.83	6.61	5.3	6	6	7.5
	7.01	4680	157.1	22.55	140.28	7.39	7.5	6	6	9.8
	7.79	5040	151.1	22.14	145.03	8.19	7.5	10.5	9	9.8
	8.6	5320	145.9	21.73	150.11	8.99	7.5	10.5	9	9.8
	9.39	5640	138.3	20.5	150.72	9.79	7.5	10.5	9	12
	10.19	5840	136.1	20.09	152.22	10.59	7.5	10.5	9	12
	10.99	6080	132.3	19.68	153.92	11.39	7.5	10.5	9	12

	Group A:	'115				Group B:	'118			
		RPM	Load	Absolute Pres.	Absolute Pres.		RPM	Temperature	Load	Absolute Pres.
	TIME					TIME				
MARKER	STAMP	 /min	%	 mbar	 mbar	STAMP	 /min	°C	%	 mbar
	0.01	2760	39.8	970	1070	0.4	2800	15	0	1080
	0.8	2880	63.2	1070	1190	1.2	2960	15	1.2	1270
	1.6	3080	79.7	1440	1360	2	3200	14	52.2	1520
	2.4	3360	105.3	1910	1720	2.8	3560	14	95.3	1930
	3.2	3760	127.8	2180	2130	3.6	3960	14	95.3	2310
	4	4160	155.6	2340	2460	4.4	4400	15	84.7	2530
	4.8	4600	158.6	2300	2520	5.2	4800	17	78.4	2500
	5.6	4960	154.9	2250	2470	6	5120	18	76.5	2410
	6.4	5280	148.9	2210	2370	6.89	5480	21	72.2	2350
	7.29	5600	140.6	2180	2330	7.81	5760	23	69.8	2290
	8.21	5920	134.6	2150	2250	8.61	6000	24	68.2	2240

Im running Uni/ths cooler with 63mm pipe work to TB & Charge pipe...Im also running Ngk Bk7re spark plugs...
ive turned my Mbc down now so its hitting 21psi on WOT in 4th now...

i just got my 63mm mandrel bend kit to make up a custom charge pipe going down in to the wing..But is my Cooler that must to small? i know its half the volume of a forge one and half the size..

Any info would be great as i can feel it holding back top end!!!

The map is Cupra_matt/Beatties old map and was done my Star performance..so something isnt right..

thanks

 

[m0rk]

something is massively wrong. and my money is on fuelling.

whip a plug out & have a look at it, see what it's like... and buy that wideband.

I'd not want to drive that at all, let alone keeping doing this data logging & high speed / high rpm runs

 

[pj1985]

What map is it running on? Any timing dialed in? Pinking?

 

[DaNnY_LaD]

What map is it running on? Any timing dialed in? Pinking?

Its running on tescos 98ron fuel and always has been...

The map was done by jim @ star performance...It was Cupra_matt & beatties Ecu...so its mapped for the the setup...

I have everything for the gt2x setup that matt and Beattie had Bar a Forge FMIC.....

Could it be

Coilpack?
Plugs?
Maf
FMIC?

Mork: I aint driving it as it aint my daily driver...

whats pinking? And nope no timing dialed unless beattie did....but il ask him now..

 

[m0rk]

can't be coilpack - it's not cutting out I guess.

potentially the wrong plugs? again, an inspection would give you a clue.

none of that will confirm why the airflow is so low (or appears lower than it should be)

So either the map isn't scaled to the MAF, or the wrong element has been fitted to one that the ECU is mapped for, or you have a blockage / restriction somewhere.

 

[DaNnY_LaD]

can't be coilpack - it's not cutting out I guess.

potentially the wrong plugs? again, an inspection would give you a clue.

none of that will confirm why the airflow is so low (or appears lower than it should be)

So either the map isn't scaled to the MAF, or the wrong element has been fitted to one that the ECU is mapped for, or you have a blockage / restriction somewhere.

Just Bare with us one second mork il go and wipe a plug out...Any in paticalur?

The Ecu was mapped for a lcr 3'' maf with a ibiza element in side..But i don't think it was Re-scale But will ask matt and beattie about it...

My thoughts on the restriction would be Either my Small Ths Cooler?or pipe work even tho its all 63mm ...

but got some new 63mm mandrell bends so il fit them....and see...

 

[DPJ]

My money's on timing too.

Plus, I wouldn't be trying to floor it 2300 is either, the CFs come in then due to high cyl temps and never go away.

I'd be doing power runs from 3k up....

 

[m0rk]

Any plug should do, they're all pulling badly enough.

it might be that what you can't see inside the IC is the problem, it might be fine.

I'm fairly sure that a correctly scaled MAF should show correct airflow...

 

[beattie17]

Sorry bud, im no help with this. I dont have vagcom, never did any logs or anything, just plugged it in and away i went.

 

[DaNnY_LaD]

No worries beattie

took cylinder one spark plug out and there ngk bk7re plugs

so when you say hight temps dave...Is my FMIC coping with it?

Or is the temps fine and it cant just flow enough air>

 

[m0rk]

which does it most look like?

http://www.aa1car.com/library/reading_spark_plugs.jpg

 

[DPJ]

Intercooler temps look ok.
Cylinder temps are a whole different kettle of fish........

 

[DaNnY_LaD]

How do you get cylinder temps down....

Mork: Neither as there 3months old and have hardly any sign of wear...They look normal.

 

[DPJ]

How do you get cylinder temps down....

Lower CFs.
less boost...

 

[DaNnY_LaD]

Should i do a log same logs but with the n75 connected and plumbed in?see what i get as my mbc might be set wrong?

 

[DPJ]

Looking at 115, I'd say your mbc is set right. You could turn boost down a tad. See my comment about starting runs later. As mork said, I wouldn't be doing many runs if CFs continue to be like that.

 

[DaNnY_LaD]

Looking at 115, I'd say your mbc is set right. You could turn boost down a tad. See my comment about starting runs later. As mork said, I wouldn't be doing many runs if CFs continue to be like that.

So 3krpm to redline...

What can i do to Down the Cf's if my boost is right as it was Mapped @ 1.4bar when it was done...il turn it down abit more...

Could my tip with filter be restrictive? 2.5 atp tip with jetex filter

To make high cylinder temps is it the charge pipe or Tb side that is restrictive?

 

[m0rk]

Are you still using that **** plastic MAP sensor pipe that goes under the subframe?

 

[Damoegan]

Could my tip with filter be restrictive? 2.5 atp tip with jetex filter

Surely a small restriction like your 2.5 ATP TIP cant cause cf's that high?

 

[DaNnY_LaD]

Are you still using that **** plastic MAP sensor pipe that goes under the subframe?

No its a Forge map sensor tube 63mm ID all the way to the TB...

I dont have any OEM plastic pipe work there i uprated it all..

Damo: i know was a stab in the dark...Just bought one the same as DPJ the 420bhp one..lol