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Author Topic: MTDI building and tuning. New Holset p.7, plan runing 30 psi!  (Read 23265 times)

Reply #90December 07, 2016, 07:03:51 pm

vic003

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Re: MTDI building and tuning, goal 25 PSI
« Reply #90 on: December 07, 2016, 07:03:51 pm »
I would also be adding  heat shield between that unit and the firewall.  Otherwise things are going to get warm under the dash.   Might get by with thin reflective shield or add to that with 1/2 inch metal deflector.
Thank you for the info!

On my Seat I owned before, the gt2052 was very close too but never had issues.

But we are here to share and learn from other, I think it's a good idea to have a reliable and safe car!
Will search for that!

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Reply #91December 11, 2016, 04:40:18 pm

vic003

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Re: MTDI building and tuning, goal 25 PSI
« Reply #91 on: December 11, 2016, 04:40:18 pm »
Hi mates! Some pics of the job made this week-end :)





Downpipe done!

The last thing to do is air piping and tuning!
The airflows at iddle is impressive for this little holset, way more than k24
And with more throttle in neutral it begin to create pressure, at something like 2000-2500 rpm!

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« Last Edit: December 11, 2016, 05:38:21 pm by vic003 »

Reply #92December 11, 2016, 05:28:18 pm

ORCoaster

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Re: MTDI building and tuning, goal 25 PSI
« Reply #92 on: December 11, 2016, 05:28:18 pm »
I couldn't tell in the bottom picture what was going on there so I downloaded it and adjusted the brightness and contrast.  Looks great.  Maybe you can edit it like that too and all can enjoy the look. 

Reply #93December 11, 2016, 05:34:56 pm

vic003

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Re: MTDI building and tuning, goal 25 PSI
« Reply #93 on: December 11, 2016, 05:34:56 pm »
Sorry, it's late on here, but due to the light in the garage flash wasn't on.
This one could be better!



I should build a turbo support bracket!

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« Last Edit: December 11, 2016, 05:39:13 pm by vic003 »

Reply #94December 12, 2016, 12:04:42 am

ORCoaster

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #94 on: December 12, 2016, 12:04:42 am »
So is that a heat shield that is now touching the pipe?  Man that is gonna sound terrible inside.  And is will conduct heat directly to the shield and You don't want that.  You want as much air between that and the turbo.  Then some more between the shield and the firewall.  That way it won't warm on you as bad.

Reply #95December 12, 2016, 04:03:52 am

vic003

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #95 on: December 12, 2016, 04:03:52 am »
Yes I know for the heat Shield! But I need to refix that crap thing...
It's completely bend due to removing turbo many times.
The car isn't finished yet, but it's not my daily so I take my time too fix all little things...

I think I will put a turbo housing isolation from Cool it, less heat in engine bay and more heat to help turbo spooling.

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Reply #96March 29, 2017, 07:10:37 pm

vic003

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #96 on: March 29, 2017, 07:10:37 pm »
Hi all! Long time I didn't come here, my job don't let me lot of time tout work on my golf as I work far, I don't come back home often...

Last mod on my car is a turbo bracket, modification of 1z bracket to fit the holset, I'll upload pic if it!

Anyone has info to build a homemade electronic boost controller for wastegated turbo? I think 300$ boost controllers are too expensive!

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Reply #97March 29, 2017, 07:13:49 pm

vanbcguy

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #97 on: March 29, 2017, 07:13:49 pm »
Any ball and spring type pressure valve should work. I ran one on my 1.6 for a long time, it worked fine.

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Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #98March 30, 2017, 02:08:40 am

vic003

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #98 on: March 30, 2017, 02:08:40 am »
Yes, ball and spring will be the cheap option, but I don't know why, I wanted to buy something like this!
If I can remember you have an electronic controller on your car, right?

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Reply #99March 30, 2017, 02:29:52 am

vanbcguy

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #99 on: March 30, 2017, 02:29:52 am »
Yep - but by the time you get all the bits and pieces together you're probably in over $150+. Mine is probably overkill for a wastegate turbo though - boost vs rpm vs accelerator pedal maps, vnt vane position maps, etc...

You could probably make something a little simpler...

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Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #100March 30, 2017, 04:21:25 am

vic003

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #100 on: March 30, 2017, 04:21:25 am »
Sure it would be simpler, in fact it would just be boost senser with an electro valve, and maybe add RPM to reduce boost pressure at high RPM, something that ball and spring won't do.

But sure, the system must stay a cheap part and I don't care for the time spend working on it.

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Reply #101March 30, 2017, 04:33:50 am

vanbcguy

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #101 on: March 30, 2017, 04:33:50 am »
RPM + TPS really... And do you really want to reduce boost at high RPM? That leads to high EGTs...

Ideally you're looking for an open wastegate during cruise conditions (reduced back pressure) and max boost with the pedal floored.

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Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #102March 30, 2017, 07:14:42 am

vic003

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Re: MTDI building and tuning. New Holset p.7, plan runing 30 psi!
« Reply #102 on: March 30, 2017, 07:14:42 am »
Reducing boost at high RPM is just if I run high boost, a safe zone for the turbo, as ECU do in the boost map on electronics Tdi.

Yes, seams a good idea to open wastegate when cruising, I must think about it.
I should use a vacuum controlled wastegate in this case instead of boost controlled.

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