Lasseliten
Member
I dont know how the state of the engine should have something to with one of the main bolts unwinds, breaks of and have a meeting with one rod with the result of a big hole in the engineblock.
a6 2.5 tdi ael hard tuning!
- Thread starter quattroelstad
- Start date
Hi C4 owners !!
I have an Audi A6 C4 R5 2.5 TDi AAT engined.
So far, only mod was a chip-tune I made on my own. Turbo is K14 stock.
I can tell from this experience that the car is very good, probably around 150hp with barely no smoke. Smooth spool-up and very progressive up to 4500rpm. I can push the tuning a lot harder... because there´s still a great margin for improvement here.
By looking at the fuel and turbo maps, it is clear that "hardware-only" mods to fuel are not the best option, because there are limitations in the stock program that will limit the new hardware potential. Specially in fuel delivery.
A lot more can be made with chip-tuning.
MSA-11 tuning is very old-school, but still, great improvements can be made.
I have an issue though : My car always blows a slight haze of smoke at idle. Probably unburnt fuel (IP timing is correct by vag-com). When I stay long-time at idle and then I take off, the smoke becomes more apparent, sometime very visible.
Probably worn nozzles ? I still have the stock 0.205 nozzles. 234.000km.
If I do a long trip I see no smoke at all. But idling for a long time... iech....
Oil consumption is about 1 liter@5000/6000km
No coolant changes.
Made a compression test : All cylinder between 29/30 bar.
Any ideas ?
i told you before, to check turbo seal, for oil leak, or the valves seals, but you don't listen, you keep asking about oil consumption
) i so hard to take that head out?
HF1600ie
Well-known member
I did listen to you !! I looked at turbo, there´s no shaft play (up/down or in/out). Also, the Oil breather line from the sump to the oil separador line is clean. The turbo oil return pipe is good, and oil flows back.i told you before, to check turbo seal, for oil leak, or the valves seals, but you don't listen, you keep asking about oil consumption
i so hard to take that head out?
The intake is clean, there´s no oil other than normal from oil breather system. So I think it´s normal.
I have to finish next weekend the piston compression test. 2 more cylinders to finish and so far I have bettween 29 and 30 bar in all 3 tested cylinders. Car was semi-warm. Are these good values ?
I could take the head out, maybe... but I don´t think I would be experienced enough to fix anything.
Don´t know, I am pointing to injectors now or maybe diesel pump.
can´t fix anything in the head
or rings, or valve seals...Probably advancing the pump will help, but vag-com says it´s already just a little too advanced.
Lasseliten
Member
It would be better if you started your own thread instead of hijacking this thread. No offence, it would be better for everyone especially youI did listen to you !! I looked at turbo, there´s no shaft play (up/down or in/out). Also, the Oil breather line from the sump to the oil separador line is clean. The turbo oil return pipe is good, and oil flows back.
The intake is clean, there´s no oil other than normal from oil breather system. So I think it´s normal.
I have to finish next weekend the piston compression test. 2 more cylinders to finish and so far I have bettween 29 and 30 bar in all 3 tested cylinders. Car was semi-warm. Are these good values ?
I could take the head out, maybe... but I don´t think I would be experienced enough to fix anything.
Don´t know, I am pointing to injectors now or maybe diesel pump.
can´t fix anything in the head
Probably advancing the pump will help, but vag-com says it´s already just a little too advanced.
HF1600ie
Well-known member
Absolutey right my friend.
To the owner of the thread...please accept my appologies.
To the owner of the thread...please accept my appologies.
Pieman
Well-known member
Very good reading.
saab9turbo
Veteran Member
Maybe we could get a own 2.5 aat/ael group on the forum? i think we need it
i think we need itMaybe we could get a own 2.5 aat/ael group on the forum?
good idea,make it so
quattroelstad
Member
good idea about the 2.5 5 cyl diesel tuning forum
by the way, is a new exhaust manifold with better flow a must?
is it a bad idea to run with the stock one?
by the way, is a new exhaust manifold with better flow a must?
is it a bad idea to run with the stock one?
good idea about the 2.5 5 cyl diesel tuning forum
by the way, is a new exhaust manifold with better flow a must?
is it a bad idea to run with the stock one?
I wouldnt worry about the manifold being a problem,'shadowmaker' on here has had 281bhp with it(maybe more?)
quattroelstad
Member
okey, wont be changing exhaust manifold then. but i assume it is a must to upgrade the MAP sensor if running up to 1.5- bar.. what sensors have been used to this kind of tuning??
K7ERG
Veteran Member
Good idea about the 5cyl section.
quattroelstad
Member
Where to mount WG? Where the egrvalve is stock, or just blend that, and make a pipe bletween exhaustmanifold and turbo and put it here, and than i can have the EGT here too??
saab9turbo
Veteran Member
Screamer pipe?
K7ERG
Veteran Member
I used the egr outlet on ex manifold for my external wastegate pipe. I have my egr blanked off inlet manifold side and removed egr valve. I have a screamer pipe off the wastegate.
Hi!I have AEL 260hp/ 480nm
GT2260v setup
low EGT max 850"C
and zero smoke
How did you do this?
I spent a lot of money to my car, but I got only big black smoke.
My parts:
- GT2260V with pressure ball
- bosio R520 II (7 holes)
- modified ECU program
- original Intercooler
Could You explain your configuration?
I'm very depressed. I've thought I'll buy 4.2 petrol engine with LPG set. But I hate the petrol's and the LPG's smell.
quattroelstad
Member
any advice on what clutch to use??
i have found singlemass flywheel..
i have found singlemass flywheel..
5cyl TDI section would be nice...
I think there are quite some people interested in this and IMHO many more will follow!
I think I lost your email.. quite not much power with all that fuel and boost =s
I am using a SBC clutch (as far as I know it is an upgraded clutch kit for the S4 model), that is performing quite well, no slip, no funny noises. However the pressure plate is heavy duty so I need a lot of foot power (and I see now that also a new cylinder).
http://pics.tdiclub.com/showgallery.php?cat=4898
Some pictures of what I am using
The problem is the SMF that is not very forgiving, it make the car very rigid when changing gears.
Maybe you could try a sachs performance kit for the SMF (maybe a S4 clutch disk + power plate) or if the power/torque is not so high, a DMF with an upgraded pp and disk.
I sent you a new e-mail. About the power - I must think something is missing or is not right... I am also confused but I cannot leave things like that.
http://pics.tdiclub.com/showgallery.php?cat=4898
Some pictures of what I am using
The problem is the SMF that is not very forgiving, it make the car very rigid when changing gears.
Maybe you could try a sachs performance kit for the SMF (maybe a S4 clutch disk + power plate) or if the power/torque is not so high, a DMF with an upgraded pp and disk.
I thought you were on holiday, or got tired of problem e-mails
I sent you a new e-mail. About the power - I must think something is missing or is not right... I am also confused but I cannot leave things like that.
Last edited:
Da-BRT
Well-known member
- Joined
- Aug 29, 2008
- Location
- Beuningen, the Netherlands
- TDI
- Audi 100 (typ 43) with 2.5TDI AEL 140hp build up mechanical / 963 Baja project - 2.5 V6 mTDI mid-engine
quattroelstad
Member
do i need bigger map sensor? if so, where can i buy it?
HF1600ie
Well-known member
I have a question...
My engine is AAT with K14 turbo.
- Is the turbo factory set to 1 bar on wastegate calibration ?
I am asking this, because in my remap, I am asking 1,3 bar. The ECU show´s 1,3 bar requested in vag-com, but in reality, it peaks at 1,3 bar at 2300 rpm and ... boost starts going down right after to about 1 bar at 3000rpm. And it tries to mantain this boost after.
So, it doesn´t sustain 1,3 bar.
Electronically, i don´t see any limiter limiting my boost. And the proof is that the requested boost in vag.com is exactly as per my request.
Any idea ?
My engine is AAT with K14 turbo.
- Is the turbo factory set to 1 bar on wastegate calibration ?
I am asking this, because in my remap, I am asking 1,3 bar. The ECU show´s 1,3 bar requested in vag-com, but in reality, it peaks at 1,3 bar at 2300 rpm and ... boost starts going down right after to about 1 bar at 3000rpm. And it tries to mantain this boost after.
So, it doesn´t sustain 1,3 bar.
Electronically, i don´t see any limiter limiting my boost. And the proof is that the requested boost in vag.com is exactly as per my request.
Any idea ?