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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 February 21st, 2015, 16:41   #1
Layerz
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Default Boost leak, cause was drive shaft rub

Just thought I'd share this as is performance related.

A few days ago I started to hear a hiss and initially thought nothing of it as there was not too much power drop but the noise bugged me and figured it was a boost leak.

Started to look into it and could do hear it but struggled to find it.

After having a good 2 person look, pressing the throttle etc we couldn't find it so guessed as it being a lower hose.

Took the lower IC hosing off and found:



Found the hose just off the turbo was rubbing on the drive shaft or suspected it. Luckily had a spare from a friends car he is breaking, so on that went.

Once the new hose was on it looked ok.





However these are unsprung pictures with the car jacked up on stands.

The car was put on coilovers by the PO (set at their highest atm) and the piping held up for 30k+ miles!

Here is was I saw after letting the jack down and wheel back on.



All behaving again atm, but posting to make this reasonably searchable and advising to be aware with a lowered car this is one to watch out for.

Mods - apologies if this is not quite performance related and more 101.
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Old February 23rd, 2015, 11:29   #2
LNXGUY
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The joys of owning a lowered TDI
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Old February 23rd, 2015, 18:47   #3
Seatman
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Maybe clock the turbo a bit to move that pipe round, basically just loosen the little 6mm bolts holding the shiny silvery end on the turbo and rotate the housing.

Better yet, get the PD150 turbo, bigger nozzles and a chip! The turbo outlet is different and should get the pipe out the way
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Old February 23rd, 2015, 20:02   #4
websaabn
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Default Boost leak, cause was drive shaft rub

You can go under the axel if you are real low, that's how I have it setup on my daily
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Old February 24th, 2015, 01:25   #5
Layerz
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Quote:
Originally Posted by Seatman View Post
Maybe clock the turbo a bit to move that pipe round, basically just loosen the little 6mm bolts holding the shiny silvery end on the turbo and rotate the housing.

Better yet, get the PD150 turbo, bigger nozzles and a chip! The turbo outlet is different and should get the pipe out the way
I have PP764's waiting to go in...there is a reason I've taken nearly a year to do it.

Bigger turbo and remap will happen after something I'm playing with because I'm an idiot that likes hard mode.

I will look at clocking the turbo, and potentially an FMIC.

The donor pipe is a bit longer I think and rubbing worse then before, so I've got a high pitched noise as it "beds" in.
Going to get in there tonight and confirm it is the noise and not that I've knocked the brake disc shield.
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Old February 28th, 2015, 15:35   #6
nick-w
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Happened to me as well!! Running 17/22 upgraded IC,piping and sitting low. I'll have to look at going under the axle sounds like it might be better!
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Old March 22nd, 2015, 10:36   #7
Layerz
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OK after eating through the donor pipe in under 1000 miles as it was the wrong size but more a temp fix. I had a new pipe but new I'd be facing the issue again.

I created a solution in cutting 1 cm off the new pipe, I maybe could of gone more but as the first pipe took years to go with slight rub I hope to of eliminated this problem.
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