All Things Mk5 > Mk5 General Area
Down on power....
neg:
--- Quote from: Teutonic_Tamer on November 03, 2008, 01:20:40 pm ---
--- Quote from: neg on November 02, 2008, 11:12:35 pm ---The problems I noticed was my boost would never meet requested, it would hit 1.3bar even if the ECU was requesting more, my gut feeling is that its a turbo issue or possible N75 but with the location of this on the TFSI being a right PITA its not easy to change.
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Where is the N75 valve on these?
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Attached to the turbo more or less - if you stretch you knee's the wrong way and look down the back left you will 'just' see small pipes coming out from it.
Going back to the K04 option, is this a direct bolt on option for the K03 engine like the 1.8T's - just a thought as there were quite a few options for direct bolt on replacements to the K03 a couple of years ago. Do you really need to go as far as new injectors etc etc if you dont want to extract everything from it...
neg:
--- Quote from: RedRobin on November 03, 2008, 01:25:58 pm ---....But if the problem is solved without any obvious fault being visible in the turbo, how much would you be keen to pay to send it to a specialist to find out?
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after spending money to replace it, I doubt you would be that bothered if it fixed it.
Be useful to see any boost logs from yours to compare to mine before I go down this route!
Teutonic_Tamer:
--- Quote from: RedRobin on November 03, 2008, 12:12:42 pm ---Also my stock intercooler is not under any excessive demands whatsoever - Confirmed by JKM.
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And how have they done that? :surprised: :confused:
Unless JKM have physically removed the stock intercooler, carried out a visual inspection, carried out a pressure test, a leakage test, and a flow test - then JKM are on very thin ice to make such a claim.
I really have yet to find any evidence that the standard GTI cooler is up to the job on modified cars. Yes, the standard GTI cooler, when used on a standard GTI, with a standard engine map, and standard exhaust, and standard air intake may be fine - I don't think your red beast could remotely be described as standard. :wink:
I have often felt that you have been "over generous" with your praise of JKM. However, on a certain other forum, had I have ever said this, then a certain other JKM "fan-boy" might have had me banned.
--- Quote from: RedRobin on November 03, 2008, 12:12:42 pm ---As I thought, JKM have checked the N75 logs and much much more, and all is ok. JKM have logs for over 200 2.0T FSI engines and I have every confidence in them and am booked in for Thursday to inspect and probably swop turbo's. I shalln't bother to spend extra money sending my turbo for testing by a specialist - Instead it may end up as a desk ornament!
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I guess my "confidence" with JKM is less than your then Robin. I would never recommend that anyone use a 2nd hand turbo, and am extremely surprised, and quite alarmed that JKM would do so.
Why don't you fone JKM and ask them to NDT the turbo housing before ordering a new or factory recon turbo.
Teutonic_Tamer:
--- Quote from: joesgti on November 03, 2008, 12:17:51 pm ---WOW new turbo, you dont hear people needing new ones of these everyday!! :scared:
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Superchips customers would though! :wink: :evilgrin: :evilgrin: :evilgrin: :evilgrin:
--- Quote from: joesgti on November 03, 2008, 12:17:51 pm ---if it is the turbo id be keen to know what caused it!! probs excessive heat as thats the only thing that can screw a turbo up isnt it?? or too much boost, but that would have probs blown then. id look at gettin an i/c whilst the turbo is out :smiley:
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There can be many things which trash a turbo. But to look at just the potential hairline cracking on the housings, then this (apart from manufacturing defects, or poor castings of the actual metal) is simply down to incorrect "thermodynamic cycling" - ie, abusing the turbo by causing it to heat up and/or cool down too quickly.
RedRobin:
--- Quote from: neg on November 03, 2008, 01:31:58 pm ---
--- Quote from: RedRobin on November 03, 2008, 01:25:58 pm ---....But if the problem is solved without any obvious fault being visible in the turbo, how much would you be keen to pay to send it to a specialist to find out?
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after spending money to replace it, I doubt you would be that bothered if it fixed it.
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....Exactly!
--- Quote from: neg on November 03, 2008, 01:31:58 pm ---Be useful to see any boost logs from yours to compare to mine before I go down this route!
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....JKM have all the logs for my car. Their usual policy is to respect the confidentiality of the customer. However, perhaps I could give permission - I would need to speak to JKM.
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