All Things Mk5 > Superchips Zone
stage 2+ logs
edd666999:
so i eventually replaced the n75 valve and relogged to find the same issue, the VERY unhelpful guy that i was dealing with at superchips now seems to have left and im now speaking to a more helpful guy who is explaining things to me!
The only issue i have now is that i dont understand some of it! haha
So i sent him the latest logs and he sent me:
Looking at the logs I see your actuator is possibly a little
> over tensioned but the ecu is coping by dropping n75 duty. You are
> pushing you high pressure pump to close to its max also. What symptoms
> do you have issue with?
i replied with:
> At about 4000rpm you can hear the car dump boost then accelerate
> slightly then dump again, does this in 3rd and 4th (not been that fast
> in 5th) pulls really well in 2nd.
>
> Doesn't do it with stage 1 map.
>
> Stage 2 its there but not half as bad.
>
> Its a autotech uprated internals on the fuel pump.
>
> Sent from my BlackBerry(r) wireless device
He then said:
> Hi Edward,
> The dumping is the ecu's response to the rail pressure dropping,
> if you have an early camshaft made of a softer material than the ED30/S3
> then the lobe may be wearing with the Autotech putting more load upon
> it. The only solution is to lower the boost slightly in the map. I would
> also reduce the wastegate tension slightly.
>
> Regards,
>
> Jamie
Now the bits i dont understand is the bit about the lobe? what is that? and is it true the earlier gti's had a softer camshaft material?
as far as i know the actuator is something i can turn to losen/tighten but its quite hard to get to?
john_o:
the fuel pump is driven off the camshaft.
It is indeed true that earlier GTI's had the revision A camshaft which is soft, leading the lobe to wear , which in turn reduces the ability of the pump to supply fuel (ergo owners see fuel cuts as the first idea somethings wrong, usually when mapping/with hpfp). I doubt thats your issue though (but worth checking)
I am however shocked about the response from SC.
Even the slightest indication you have a rev A and are having issues then you need to get it checked. pump off, and check the cam follower / lobe for wear, not turn down the map!
buy a new follower and change it while the pump is off :happy2: VW may even warranty it if its worn. (if you put the std internal back in)
from what little I know the actuator is not something you go playing with without knowing what you are doing, I would only ever entrust this to a tfsi specialist (e.g JKM) who can log the car fully to ensure its set correctly. Its not something to my mind you just 'tweak' :surprised:
as others have intimated, Id suggest getting the car healthchecked (cam follower etc) , flash car back to stock,reset the handset and sell it, then move on to REVO/GIAC/APR
(for the K03 I'd suggest REVO imho)
edd666999:
--- Quote from: john_o on October 07, 2010, 08:09:04 am ---the fuel pump is driven off the camshaft.
It is indeed true that earlier GTI's had the revision A camshaft which is soft, leading the lobe to wear , which in turn reduces the ability of the pump to supply fuel (ergo owners see fuel cuts as the first idea somethings wrong, usually when mapping/with hpfp). I doubt thats your issue though (but worth checking)
I am however shocked about the response from SC.
Even the slightest indication you have a rev A and are having issues then you need to get it checked. pump off, and check the cam follower / lobe for wear, not turn down the map!
buy a new follower and change it while the pump is off :happy2: VW may even warranty it if its worn. (if you put the std internal back in)
from what little I know the actuator is not something you go playing with without knowing what you are doing, I would only ever entrust this to a tfsi specialist (e.g JKM) who can log the car fully to ensure its set correctly. Its not something to my mind you just 'tweak' :surprised:
as others have intimated, Id suggest getting the car healthchecked (cam follower etc) , flash car back to stock,reset the handset and sell it, then move on to REVO/GIAC/APR
(for the K03 I'd suggest REVO imho)
--- End quote ---
i swapped the cam follower about 400miles ago, im literally waiting for REVO to do some kind of deal as cant justify the extra £400 i will need to buy revo.
As im stuck with this map until then i was trying to get it as close to perfect as possible but it doesn't seem to be working.
i might just run stage 1 map until the time that i can get revo.
edd666999:
had the revo trial map loaded today...and the problem seems to have disappeared???
So its not my car but the software, proof.
It feels good being able to overtake again!
winrya:
That's great news and even more praise for revo :happy2:
They are really beginning to monopolise remapping the tfsi
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