Interceptorxj
Well-Known Member
Deleted , didn't notice it was an old thread with pages of replies.
19_Hue_95
Active Member
Apologies for adding this to a thread from 2019, but this is what I have used for advice so it seemed sensible to put it here.
So the problem is steep hills off boost (engine hot or cold, does not make a difference). For example if I stop on a steep hill, without going into low range its almost like the engine will stall (it will unless I floor it and slip the clutch) absolutly zero power. Once the turbo kicks in off we no issues. Likewise steep hills with the turbo no issues.
Prior to any modifications it didn't really smoke unless I was in the wrong gear. And it already has a Morgan Hill boost pin fitted.
My first change was to turn the smoke screw 2 full turns clockwise. It's made a reasonable difference off boost. Pulling out of the driveway up our steep road it's sluggish as hell but dosent feel like it's going to stall anymore. But it has started smoking when full throttle.
Second change was to turn the star wheel 1/4 turn clockwise. This dosent feel like its made much difference. But boy it smokes, especially on full throttle.
I've read mixes things about the star wheel on here and the TDI performance page. Some say to turn it CW and others say to turn it CCW.
I'm not really after power on boost, thats fine. I want the power off boost - ideally without smoking out the neighbours.
So I'm thinking star wheel 1/2 turn CCW from its current position (1/4 turn CCW from the original position). And then the smoke screw on top another half turn?
At this stage I want to stay away from the main fuel screw on the back.
So the problem is steep hills off boost (engine hot or cold, does not make a difference). For example if I stop on a steep hill, without going into low range its almost like the engine will stall (it will unless I floor it and slip the clutch) absolutly zero power. Once the turbo kicks in off we no issues. Likewise steep hills with the turbo no issues.
Prior to any modifications it didn't really smoke unless I was in the wrong gear. And it already has a Morgan Hill boost pin fitted.
My first change was to turn the smoke screw 2 full turns clockwise. It's made a reasonable difference off boost. Pulling out of the driveway up our steep road it's sluggish as hell but dosent feel like it's going to stall anymore. But it has started smoking when full throttle.
Second change was to turn the star wheel 1/4 turn clockwise. This dosent feel like its made much difference. But boy it smokes, especially on full throttle.
I've read mixes things about the star wheel on here and the TDI performance page. Some say to turn it CW and others say to turn it CCW.
I'm not really after power on boost, thats fine. I want the power off boost - ideally without smoking out the neighbours.
So I'm thinking star wheel 1/2 turn CCW from its current position (1/4 turn CCW from the original position). And then the smoke screw on top another half turn?
At this stage I want to stay away from the main fuel screw on the back.
Replace the exhaust for a sports one, it'll make a heck of a difference. It did for mine!
19_Hue_95
Active Member
How would it make a difference? I've been eyeing them up for a while as mine is slowly falling off - tempted by a back box delete.
Had you made any other changes before the exhaust change?
To put it simply it more free flowing. Mine ONLY has a back box. It is wider bore and stainless. As rthere is less resistancee to the exhaust gases the turbo spins up faster.
I bought it cos mine is in standard tune and i wasn't impressed with how it didn't move well off the line, i.e. at roundabouts junctions etc, It took away the turbo lag to a large extent, drives very well, more relaxed and better fuel consumption.
don't know if they are still available, I just walked into a Land Rover Indy and said "Sports exhaust please", they ordered it in and I fitted it. Piece of pistachio!
HD springs to the rear, old rears to the front, gaz shocks all round.
No changes to the engine at all, totally standard, except for the exhaust.
Was that from the manifold back.HD springs to the rear, old rears to the front, gaz shocks all round.
No changes to the engine at all, totally standard, except for the exhaust.
No cat fitted then
Yes, no cat fitted. to a 1998 Anniversary Disco ! 300tdi. I wasn't aware they even fitted cats then. Put it this way you could remove the cat and do this anyway cos cats in those days would have been an option only, I think.
My 94 MR2 has a cat
Yerbut that's a peteroil one innit?
LuckyPhil
Member
please tell us more! What did you do to achieve these results?
Go to page 1
Ladric_and_Lizbit
New Member
I did the same process on my 96 330 tdi 90 and she's been running well, still rather slow so I tend not to drive her at night as American's can be quick to annoy if you don't move along.
Anyway, what I have notices is that everything in my garage as a fine black dust on it... is that just normal diesel exhaust soot or is she she blowing to much smoke?
I let the blow lugs heat then start and creep out of the garage so not sitting and running.
Anyway, what I have notices is that everything in my garage as a fine black dust on it... is that just normal diesel exhaust soot or is she she blowing to much smoke?
I let the blow lugs heat then start and creep out of the garage so not sitting and running.
