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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 14th, 2017, 09:18   #16
bhodgkiss
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simply amazing!
You have some serious fab skills. How have you welded the pipework? It looks seamless
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Old November 14th, 2017, 10:57   #17
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Quote:
Originally Posted by bhodgkiss View Post
simply amazing!
You have some serious fab skills. How have you welded the pipework? It looks seamless
thanks i am a bit of a perfectionist lol pipe work has been all tig welded
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Old November 14th, 2017, 14:51   #18
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really nice can"t wait for more pictures of the build.
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Old November 14th, 2017, 15:17   #19
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Quote:
Originally Posted by Machineman View Post
... I'm running a tdo4 13t high pressure Turbo had a TD06 20g low pressure... I have about 900 CFM of air to play with so we'll see where that takes me.
I don't know how you did the arithmetic to arrive at 900 CFM, but if the turbos are connected in series, you can't simply sum the CFMs of the HP and LP. The total max CFM is instead only that of the LP, that is, according to the below, closer to 600 CFM.





Not a knock, really - 600 CFM would still support about 400 HP in a TDI, which is more than you will likely actually achieve, but for the sake of correctness, 400 HP is more intellectually honest than 600 HP implied from the 900 CFM figure.

Love the fab work!
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Old November 14th, 2017, 17:57   #20
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Thanks for chiming in I guess I was just assuming that's how it worked someone I know told me that's how it worked but I wondered myself if they were true or not irregardless 640 CFM is alot of air for a 2l tdi thanks for posting the compressor Maps!
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Old November 14th, 2017, 18:02   #21
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Also based on some of the things I read people have said that the high pressure turbo helps to create flow as well I wouldn't assume that they're both added together but there is some sort of factor involved
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Old November 14th, 2017, 18:12   #22
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Everything's so shiny!

I can't even get v-bands to seal under muffler pressure, much less EMP, hah.
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Old November 14th, 2017, 18:17   #23
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Quote:
Originally Posted by Machineman View Post
Also based on some of the things I read people have said that the high pressure turbo helps to create flow as well I wouldn't assume that they're both added together but there is some sort of factor involved
Think of the HP turbo and engine just as a larger engine that the LP turbo breathes into (and receives gasses from)

you might be thinking of how pressure ratios multiply when in series, where when you're running PR of 2 across both compressors you see 14.5 psig in interstage, then 43.5psig in intake manifold
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Old November 14th, 2017, 19:08   #24
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I guess we'll see what happens
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Old November 14th, 2017, 19:08   #25
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Eventually I think the low pressure will get upgraded to a 25g and the high pressure will get upgraded to a 19T
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Old November 15th, 2017, 07:29   #26
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Very nice fab work. Look forward to seeing how it comes together.
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Old November 15th, 2017, 07:40   #27
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Quote:
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Everything's so shiny!

I can't even get v-bands to seal under muffler pressure, much less EMP, hah.
The trick with v bands is to keep everything Superflat that's why I machine everything after welding I do strongly agree though v band can be a nuisance
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Old November 16th, 2017, 07:58   #28
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anonymous image hosting
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Old November 16th, 2017, 07:59   #29
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I've been working on the intercooler it's a lot of work I started out as a bare core there's not a lot of room on these B6 platforms I figured I would go custom the core is rated for 520 horse it's a good quality high density

Last edited by Machineman; November 16th, 2017 at 08:07.
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Old November 16th, 2017, 23:18   #30
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Intercooler done

Last edited by Machineman; November 16th, 2017 at 23:22.
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