Hi All,
I've been running a JB4 G5 for a couple of weeks now... The car is stock otherwise.
It's been performing just fine on Map 1 which is the recommended map for stock cars.
I switched back to Map 4 the other day (which is the closest thing to stock tune on the G5) as I was commuting in Sydney's lovely traffic on Friday afternoon.
As I went to WOT on 2nd gear, I got the old 30FF error (underboost - possible boost leak) and the half engine power light came on. I switched off the engine, cleared the code, tried again and got the same result.
The funny thing is, I have no such problems on Map 1 which targets even more boost.
And so I am left scratching my head a little.
Another thing to note is that there is no noticeable drop in power once the CEL appears. Not that I keep pushing hard once it comes up. But it's not like the engine goes to zero boost or anything.
Have any of you JB4 owners out there seen this before?
The N54tech forum is littered with threads about the 30FF code but I can't find anything similar to my issue. Most people get this code as they go for more boost. Not less!
I've been running a JB4 G5 for a couple of weeks now... The car is stock otherwise.
It's been performing just fine on Map 1 which is the recommended map for stock cars.
I switched back to Map 4 the other day (which is the closest thing to stock tune on the G5) as I was commuting in Sydney's lovely traffic on Friday afternoon.
As I went to WOT on 2nd gear, I got the old 30FF error (underboost - possible boost leak) and the half engine power light came on. I switched off the engine, cleared the code, tried again and got the same result.
The funny thing is, I have no such problems on Map 1 which targets even more boost.
And so I am left scratching my head a little.
Another thing to note is that there is no noticeable drop in power once the CEL appears. Not that I keep pushing hard once it comes up. But it's not like the engine goes to zero boost or anything.
Have any of you JB4 owners out there seen this before?
The N54tech forum is littered with threads about the 30FF code but I can't find anything similar to my issue. Most people get this code as they go for more boost. Not less!
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