noise at WOT - flutter vs clatter when boost hits 22-24...
01-06-2009, 05:32 PM
#1
AudiWorld Senior Member
Thread Starter
Join Date: Oct 2002
Posts: 1,042
Likes: 0
Received 0 Likes
on
0 Posts
noise at WOT - flutter vs clatter when boost hits 22-24...
recent install of OEM rs2 turbo, mani, MAf and injectors with IA software... (which I love - fantastic improvement over stock)
is this pinging - 93 octane and it's cool here... or could it be waste gate flutter - boost gauge doesn't move and power doesn't seem affected.
My fuel pump is still original so I'll swap it out... time to upgrade or just rewire it as well.
tia
is this pinging - 93 octane and it's cool here... or could it be waste gate flutter - boost gauge doesn't move and power doesn't seem affected.
My fuel pump is still original so I'll swap it out... time to upgrade or just rewire it as well.
tia
01-06-2009, 06:09 PM
#3
Might be worth adding the fuel pressure gauge to your TDS-1...
It sounds like it <i>could</i> be detonation. If you're running the stock 4 bar fuel pressure regulator the factory pump can't keep up.
01-06-2009, 07:08 PM
#6
AudiWorld Expert
Join Date: Mar 2003
Posts: 31,531
Likes: 0
Received 0 Likes
on
0 Posts
I'd be surprised if you ping w/93oct having modified your engine with known good & safe parts
and software.
could be the wastegate or some strange exhaust flutter.
In my car I get a bit of a vibration/flutter/rumble/clatter sound when I get into boost. For me I think it's something in the drivetrain...I've long suspected my rear diff to be slowly on its way out. My motor has 340,000km on it and I'm pretty sure most everything (that hasn't been replaced by me) is still original.
I intended in the near future to pull the motor & go with a complete rebuild, plus look at R&R'ing or out-right replacing some of the more major driveline & steering components. If it still makes noise after than well then I have a more serious problem. But for the time being I don't feel the car is in grave danger and have taken to generally driving her like a grandma. I'm positive the car isn't as healthy as she was 2.5yrs & 60,000km ago when I got her.
could be the wastegate or some strange exhaust flutter.
In my car I get a bit of a vibration/flutter/rumble/clatter sound when I get into boost. For me I think it's something in the drivetrain...I've long suspected my rear diff to be slowly on its way out. My motor has 340,000km on it and I'm pretty sure most everything (that hasn't been replaced by me) is still original.
I intended in the near future to pull the motor & go with a complete rebuild, plus look at R&R'ing or out-right replacing some of the more major driveline & steering components. If it still makes noise after than well then I have a more serious problem. But for the time being I don't feel the car is in grave danger and have taken to generally driving her like a grandma. I'm positive the car isn't as healthy as she was 2.5yrs & 60,000km ago when I got her.
Trending Topics
01-07-2009, 04:50 AM
#9
The TDS-1X can display fuel pressure, and more usefully dynamic (fuel pressure - manifold pressure)
It is kind of a PITA, but your TDS-1 could be upgraded to -1X. Only the really old ones can't be.
Thread
Thread Starter
Forum
Replies
Last Post
aerohr
Audi 5000 / 200 / V8 Discussion
0
03-25-2006 12:47 PM
S4orce2001
S4 / RS4 (B5 Platform) Discussion
25
11-20-2004 12:32 PM
