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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old November 27th, 2017, 07:57   #61
mrmoto35
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Can anyone comment whether I should powdercoat the intercooler piping black or leave it stainless ? Im on the fence
This is just me, but I like the idea of powdercoat. My personal choice would be black so as to retain an "OEM" look. But black may have slight heat implications...Either way it looks great!

As others have said your fab work is brilliant!! It all looks top shelf. Everything in the engine compartment is nice and clean, nothing looks cluttered. Great stuff, thanks for sharing this with us!
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Old November 27th, 2017, 08:54   #62
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This is just me, but I like the idea of powdercoat. My personal choice would be black so as to retain an "OEM" look. But black may have slight heat implications...Either way it looks great!

As others have said your fab work is brilliant!! It all looks top shelf. Everything in the engine compartment is nice and clean, nothing looks cluttered. Great stuff, thanks for sharing this with us!

Thanks and yes I agree the black will look more oem this project is far from OEM lol but it's nice to keep things looking like they're supposed to be there
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Old November 27th, 2017, 09:02   #63
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I have some bad news as well the low pressure turbo blew up on the weekend the cause is likely related to the fact that the oil line was too small feeding the distribution block and will be replacing it with a 6an braided line the good news is I will be upgrading the turbos to a td06h 25g billet and a td04hl 15t or 19t maybe TDImeister can comment on that as i am unsure of whats more suited 15t flows 420cfm 19t is 500cfm 25g is 850cfm the good news is I can keep my original housings
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Old November 27th, 2017, 09:09   #64
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I'm also working on building up a fresh long block with a ported oversized valve head and hopefully a 11mm lift cam I'm going to try and turn it into a street monster 4cyl
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Old November 27th, 2017, 12:26   #65
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for HP turbo sizing, the flow volume remains constant despite increases in air density, so you need to use gas compression formulas to figure out where you're at on the HP side

I find that mass flow based maps are easier to work with, as you simply multiply the airmass values by whatever the inlet air is above the atmospheric air density and temperature the map was made with.
Running an LP PR of 2 and an HP inlet temperature of 80F, you might multiply the mass flow values for the HP compressor map by 2.
LP PR 2, HP inlet 150F, you'd multiply by 1.6 or whatever. Calculate the difference in inlet density.

MHI maps are volume flow based, however.
This avoids needing to specify inlet temperature and pressure on the compressor map, but it makes things a little different in the calculation side. I just converted my maps to mass flow rather than figuring out the volume flow.

I'd imagine playing around with a few gas law calculators you could figure it out.
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Old November 28th, 2017, 13:57   #66
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Sorry to hear about the ruined LP

Need interstage as well as intake manifold pressures and temperatures to make any sort of educated determination.
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Old November 29th, 2017, 20:45   #67
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Sorry to hear about the ruined LP

Need interstage as well as intake manifold pressures and temperatures to make any sort of educated determination.

I agree do you think 800cfm 25 G lp is too big in conjunction with the 13 G? As these are the same price and if I'm buying a new one I want to buy the most Suited I read somewhere that your low pressure should be roughly twice the flow your high pressure the 20 G I was running is a little under half 25 G is a little over half
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Old November 30th, 2017, 19:29   #68
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25g is 60/78, so pretty close to the HX40 I'll be trying out with a 19t HP
IIRC I looked into a 15t HP and it was lining up reasonably well with the hx40, the 13g isn't all that much smaller

yours'll probably be together first, though, so any numbers I come up with real world won't do you much good, haha
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Old November 30th, 2017, 19:48   #69
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needs a Holset just saying...
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Old December 2nd, 2017, 08:28   #70
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needs a Holset just saying...
I might agree holset turbos are very durable and if I blow another low pressure I put in a hx40 on
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Old December 2nd, 2017, 08:29   #71
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Old December 2nd, 2017, 08:36   #72
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Finally got my flow bench somewhat working now I'm starting to understand a bit of the limitations of these cylinder heads at factory lift versus 12 mm lift there's very little increasing flow maby 3% I don't think these require more lift I think duration is more important and larger valves and porting I think the ports and valves are simply just too small for much more gains and the exhaust definitely has more room for improvement
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Old December 3rd, 2017, 11:24   #73
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Hi! Do you have knwoldge of a device similary to VFIZ able to fit on a B8 3.0 tdi, besides P3 gauge ? Something like Awron, who does it only for bmw...
And how about your audi 3.0 tdi, are you still continuing the project? Good luck ! you have pm ....

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Old December 3rd, 2017, 22:02   #74
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Can anyone comment weather at - 6 feeding 2 - 4 lines is enough oil in theory it should be but I'm worried about blowing my new Turbo does the factory TDI oil filter housing output enough oil from one fitting to supply to turbos??
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Old December 4th, 2017, 07:01   #75
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It's not the housing that flows the oil - it's the oil pump.

No mention in the thread - I assume your BHW block is BSM deleted?

If so, the best option for oil flow would be an ALH pump with BRM oil pump gears (fastest oil pump RPM). You may open pressure relief valve cold, but you will have the largest oil volume hot.

You have 4 feeds off that line? 2 turbo oil feeds and...?
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