do octane boosters work?

 

Don't mess with 'em. Use higher octane gas if you must...

 

warrtalon, how do you know when your car nocks?

 

1) Through a knock warning light if you have one installed or setup through an engine management system

2) Through the use of a logging device that can show you where timing is being pulled. Wherever timing is flat or is decreasing, you have knock

3) You can feel it at the top of 3rd or 4th gear when you're at full boost but just don't see to be pulling very hard. This butt dyno knock sensor is not very effective, because sometimes you just get used to your power, or it's a particularly hot day where you don't make as much power (slight knock).

 

when does the fuel cut off happen?

 

I'm asking all these questions because i have the Hallman mbc and i don't know what is safe as far as boost goes for stock turbo?

 

All it takes is a little searching to find out what boost is safe on pump gas (20-21psi).

Same goes with fuel cut...