Stop Screw Adjustment 1749VC Hybrid

[S10EAT]

Badger, only reason I'm trying to avoid removing the turbo is a) I don't have all the tools necessary and b) the last two garages to touch the turbo have snapped the oil feed pipe where it meets the oil filter housing and I don't particularly fancy having all my engine oil leak out again.

I can't find a competent garage to work on my car any where in East Sussex.

 

[Badger]

You could drop the driveshaft only 6 bolts, this should give you more room.

 

[Dan FR]

Turbo removal may be the easiest option. Undo the bolts on the sub frame and lower it down without removing it, will give you a lot more room, as will removing the driveshaft

 

[spud31]

Remove turbo inlet pipe and attack stop screw from top

 

[Badger]

Remove turbo inlet pipe and attack stop screw from top

The actuator arm will be in the way.

 

[S10EAT]

UPDATE: Mapping is coming along much better now, holding boost with no dip in the mid to high end now.

I've just realised something quite strange though, I was reading through some of my older emails and realised that I had a similar problem with low end spool even with the original PD150 turbo which was one of the reasons I was thinking about replacing it (other was siren noise)...

So, my question is what else can cause low end spool other than a turbo that is not set up correctly? It may also be the case that it does need slight adjustment on the stop screw but thinking about it 144mbar 011 basic settings should be giving better spool than I'm getting surely?

Injectors?

Any opinions on that?

 

[Badger]

Exhaust restriction mainly. Blocked CAT.

Injectors would show on VCDS logs.

 

[S10EAT]

Exhaust restriction mainly. Blocked CAT.

Injectors would show on VCDS logs.

Shouldn't have a problem with exhaust as I have the cat removed and 2.25" piece fitted in place and have an aftermarket cherry bomb type muffler on the back.

What do I need to look for in the logs for injectors? low mg/str?

Thanks,

S10EAT

 

[Badger]

Pretty much, when you drive it around, are you getting lots of smoke at low RPM and WOT?

 

[S10EAT]

Badger,

No, that is the thing that is strange, I can't remember a time when I have seen anything more than a slight grey haze, it feels like it's lacking fuel delivery.

Most of time I see nothing out the back.

This is a graph of the IQ I did last month on original map.



Thanks,

 

[Badger]

From that graph, the ECU is limiting fueling as the turbo isn't sucking enough air in. Hence why the yellow line looks similar to your boost line.

What intake setup are you running?

 

[S10EAT]

Standard Airbox, standard filter, standard TIP only modification is a R32 snorkel to airbox.

I have a SFS intake pipe lying around, is it worth trying it with this and running log again?

Thanks,

 

[S10EAT]

If it helps, here's a MAF log I did yesterday:

 

[Badger]

Not really sucking in that much air. I've got the GTB1756VK and that is sucking in over 1500 from 2000rpm.

Wonder if the N75 mapping isn't low enough from idle.

 

[S10EAT]

I tested out a S2000 air filter on mine and just found a MAF log I did just after the change, looks a lot better doesn't it?



Should I change back to the S2000 air filter?

 

[Badger]

Wouldn't harm doing so. I'm running the S2000 filter and it's loads better. You could ask the mapper to swap to MAP based smoke limiter and go that way to see if it's the fueling that's an issue.

 

[S10EAT]

I've read about your build! I didn't get to do much testing with the filter, do you get much heatsoak with the filter? As it's getting hotter I worry about it without an enclosure.

Ok I'll ask my tuner about that.

Thanks,

 

[Badger]

Not suffered any yet. I do have a FMIC though.

 

[S10EAT]

I shouldn't have any trouble then as I've got the S3 FMIC

Going to get the stop screw looked at on Monday, my gut tells me my low spool is something else though.

 

[Badger]

How are you uploading the remap to the car?