A4Turbo22

I don't know how long this has been happening for, but I just kinda noticed it today on my ride home from work, but my boost is only at like 10-12psi, and I know it won't hold full boost in 1st or 2nd for very long, but it used to be able to hold it for a least a little while in 3rd-5th, now I tried punching it most of the way through the RPM's in 3rd gear and it won't even hit 15+psi. Is this because of the cold weather, or a boost leak somewhere, or maybe my chip needs an upgrade. Does anyone know if an upgrade is available for a '97 A4. Any help or input would be great. TIA.

[ej257]

the ECU will dial back boost accordingly. normal.

Audi2ptzero

you will get higher g/s readings at even a lower boost level.

Mirror|rorriM

That's the whole point of using a MAF - its readings are temperature and boost independent.

Audi2ptzero

and if that g/s is reached it holds the boost down to stay at that g/s level.

I use a chip and bc, which allows me to run the same boost level all the time. This means my g/s jump up alot when it gets colder which also means I have a much larger gain in power at that time.

growlinaudi

newbie question..Whats "g/s" and how do you hold constant boost?

Audi2ptzero

A k03 and K04 cant hold a constant boost to redline, it is only good to 5000 rpms before it hits full spool and the boost level will then start to drop off.

growlinaudi

Thanks for the info...One more, Was "BC"- boost controller?