I know this question has probably been asked many time and many ways, but i have been serching and haven't quite found what i need to know. I have 2000 civic Si, i am about to install turbonetics stage II kit with a S-AFC II and 450cc injectors on the stock 10.2:1 c/r engine. What is a safe boost level for everyday driving? I will eventually replace the ecu with a standalone but now i will use the S-AFC II. Am i making a big mistake using the S-AFC II, sounds like most people say the hacks are just crap? I have read this sites forums about Engine management, and it seems that the hack is good to 10psi, but can THIS stock engine handle 10psi. NE other suggestions would be great!

 

did you read anything before posting? or try to search at all

 

The afc limits you the most...anything over 8-10 psi depending on cfm flow (cfm flow as matched to a/f ratio off the 450's) is not going to happen...you'll pop a check engine light. Once you go to a GOOD management, then you can run higher. I have the jdm b16a @ 10.5:1 cr and have run up to 17psi into it in previous setups with no issues. Tuning is the big key here...it can make or break your motor.

 

stock b16a runing @ 17 psi?

 

30psi should be straight lol

 

Yeah, it was a smaller sized turbo though, so to keep up with the cfm demands I had no choice lol. What limits the amount of psi you can run is pretty much risk of detonation increases. Sure, you can try pulling timing to lower that risk, but then your egt's will soar...also not good. It's kinda a fine line to tread.

 

So, it sounds that if i have the S-AFC II adjusted as best a possible on this b16a2 with the 450s and no boost over 10psi (also depending on cfm) that i would be safe for a while as long as i don't run it into the ground? Its not an everyday driver, and my heavy foot has relaxed in the last few years.

AND what is the best, resonable priced way that most are working with OBD2 so i can get rid of the AFC? I noticed not much can actually be done with the obd2 ecu or it is very expensive and not worth it.

Thanks for the great advice!!

 

convert to obd-1

 

Definately.
Problem with AFC's is that they advance your timing when you scale back for larger injectors. More timing=higher risk of detonation and grenading your motor, especially on a b16. Some argue you can retard the dizzy to take care of that, BUT...retarding the dizzy timing will not only kill your off the line torque, it will also raise your egt's and still increase your chances of detonation. You could always get something like an MSD btm box to retard timing a set amount per each psi of boost, but with the total amount of money you'll spend you're better off getting a conversion harness, dropping down to obd1, get a p28 and chip it. Then you can have it properly tuned to your setup's full potential.

 

what i thought ... that turbo would be very loud spooling up to 17 psi eh? :P