with out the solenoid being used and I am using my grainger valve what advantage is the CSX stage II logic module has over the stock one in my car,and yes it has a intercoolerPut the new ecu in, and use the grainger @ 15psi, run premium gas.
Without the solenoid the ecu can't pull boost in the event of detonation but with an intercooler and premium 15psi should be fine.
Stock module is calibrated for a certain psi at wide open throttle, the fuel and spark curves will be for that psi. The new ecu is calibrated for the same 15psi you want to use (and the limit of a 2 bar map) so even though the boost is controlled by the grainger instead at least it expects 15psi and will use corresponding spark and fuel curves. Plus you'll get a tiny bit more power from the more aggressive tune.with out the solenoid being used and I am using my grainger valve what advantage is the CSX stage II logic module has over the stock one in my car,and yes it has a intercooler
If the solenoid is not hook up how will the new logic module II know how much boost is going in the engine to control the corresponding spark and fuel curves? ,from some intake pressure sensor:shrug:Stock module is calibrated for a certain psi at wide open throttle, the fuel and spark curves will be for that psi. The new ecu is calibrated for the same 15psi you want to use (and the limit of a 2 bar map) so even though the boost is controlled by the grainger instead at least it expects 15psi and will use corresponding spark and fuel curves. Plus you'll get a tiny bit more power from the more aggressive tune.
I will change the logic module tomorrow with the new CSX stage II,Thanks for the great info:thumb:the computer will still see how much bootst is going into the engine via the map sensor, put it in, you will love what it does, higher boost limit, higher rev limit,more fuel when needed,more aggresive timing advance tables, you wont be disappointed and it will make it a safer ride.
If I turn the boost to 15 pounds with the new stage II logic module Im I going to need to get a set of +20 injecters or is the stock 32 pounds good enoughI've got the stage 2 MP module, +20's and a G-valve on my 87 CSX. I've got it set to about 15psi, pulls quite nice :thumb:
running 15 PSI your running on the edge and past 2 bar. Your aiming for the end of your fuel and spark curve and right on the edge of boost cut out. So in this day and age your not doing your self a favor running a T2 car like that. Run the +20s, 3 bar map and the stage 5 computer. Run it hooked up to the computer, not with a MBC / grainger. When you detonate and you are manual controling the turbo, the boost doesn't get pulled and you melt / break the engine. Not to mention part throttle boost is 15 PSI and your chewing fuel. Part throttle set at MP 7 PSI or FWD 10 PSI is MASSIVE in mileage around town.I've been looking at the posts about the "grainger" bleed off valve to increase boost. Where can I purchase one? Also, do I need to purchase a hp logic module (inside car), or hp ECU (under hood), or both to run 15psi boost?
