320i from HELL *LATEST UPDATE: ________________________________________________ BUILD: How to make your 320i into a beast. This will put 328s in your mirror as you pull up on 335s. JB4 - This is an amazing engine tune. With the 320i and a piggyback tune, I either recommend the JB4 for...

Hey guys, I have just recently purchased a P3car OBDII gauge for my f30 N20. I have JB4 on my car and for the compatible purpose, I have to Tap the blue wire from the P3car gauge with the Map sensor. Now I just want to make sure I get the right boost, what boost do you guys get, I got maximum...

How do you make sure the tire PSI is really 32? do you have read off from the pressure stick or the TPM from iDrive? which one is more accurate? Thanks guys!

hey guys, whats the good range for PSI is good? I got my 2014 328i 2 month ago, and the PSI dropped 1~2. Is this normal?

Hi, What's the correct PSI for Goodyear 18 inch run flat tires (BMW F10 523i)? Thanks!

Should I follow the sticker on the door? My winter tires are different sizes than my summer. I have a 2006 330i/Sports Package and the staggered tire setup. My winter tires are Blizzak (not the run-flats) 215/50R17. I was thinking of just inflating to 32 front 35 rear. That is lower than the...

Hi again :), have been carrying out compression testing on my 1997 520i and note that each cylinder (while hot) is giving a reading of around 105 psi (+- 2psi) does this sound right? When I'm testing compression sometimes the pressure drops and then jumps up again as if i'm losing pressure...