Hey guys i got a 2000 A4 1.8t quattro and ive done research and the stock boost is around 8psi but i recently installed a boost gauge and it is reading around 12 psi. I have tested this with another gauge and i get the same reading. As far as i can tell there is no aftermarket parts other than stuff ive done and that has nothing to do with power. Is there any way i can tell if its been tuned or not? Thanks in advance!

 

The tuning is done through the ECM. You could use VAG COM to snoop around in there.

 

Ok thanks. Ive never really worked with vag-com. Ive only worked with obd II. How will i be able to see if it has been altered?

 

That's a good question. I'm also more familiar with OBDII, but I've played with VAG COM quite a bit also.

In your situation, I would look for fuel delivery and timing changes. The boost specs are in there somewhere also, but I don't know exactly where. If you can find advanced timing and increased fuel delivery, then you can be pretty sure it's been tuned.

LMK how it goes.