I am finishing up my build on my 99 civic si with jrsc and have a couple questions. Im planning on installing a water/meth injection kit to cool down the intake temps that the jrsc produces. once tuned would my car run good with the meth injection for daily driving? Also what would i have to do to make my jrsc put out 10 psi? Would i need an upgraded map sensor and fuel pump if i am making 10 psi? any help would be greatly appreciated. Thank you

 

unless ur running over 11psi of boost ur not gonna need a water/meth injection kit, unless ur gonna be really on it all the time. to make a jrsc run more boost requires making one of the pulleys smaller. check out the HUGE jrsc thread thats on here ull find lots of info

 

Im running the stock jrsc pulley on the blower. Would the mvm stepper pulley for the alternator give me 10-11 psi of boost?

 

All the info you could possibly ever need about JRSC builds is contained in this thread:

https://honda-tech.com/forums/forced-induction-16/%2A%2A%2A-official-jrsc-thread%2A%2A%2A-1214810/

 

Do some more research, Dude....not just asking questions.

Check out Veris's page, www.ftlracing.com. There is a wealth of information, including the information you're wanting about pulley configurations and resulting boost levels.

The JRSC setup thread has a wealth of info, but it's a bitch to find anything in there b/c the thread is SO big....but take the time to look through b/c there is a LOT of great info!