For anyone interested in my most recent project...
for the past 2 weeks, ive spent about 5-6 hours every night in my garage getting this thing working. My buddy fabbed the entire thing from scratch on his S4 (i have an S) and my car was the first car to recieve the kit.
Minor differences along the way made this install a complete pain in the ass, but we've finally got it all together.
I was able to drive it for the first time last night. Its running 4psi, non-intercooled. It runs an Eaton roots-style supercharger sitting on top of a completely custom intake manifold. Running 30lbs injectors with a BEGI/CARTECH 2025 FMU.
The response of the motor has been substantially improved. Just tapping the throttle and you can tell this thing means business. Unfortunately, I seem to have a problem which may be fuel (running rich) related. Basically, when you're on the throttle, at some points the motor will stutter and lose power. We believe this to be the FMU... but we adjusted it down to about 3:1 boost ratio. Initially, the problem was very bad, after knocking down the FMU quite a bit, it runs much better... but still stutters sometimes.
Another thing is It may be possible that from running rich, the plugs are fouled, and under load when the psi goes up, the extra air might be blowing-out the spark... but i don't know how common that is. I won't know until i take the plugs out and check them.
Either way, before someone posts one of these:
I'm going to say that I'll have some decent pics up shortly when i get the engine bay cleaned up a bit better. My next goal is to get the SMT6 in as a data logging device, then using it later to further tune the car.
for the past 2 weeks, ive spent about 5-6 hours every night in my garage getting this thing working. My buddy fabbed the entire thing from scratch on his S4 (i have an S) and my car was the first car to recieve the kit.
Minor differences along the way made this install a complete pain in the ass, but we've finally got it all together.
I was able to drive it for the first time last night. Its running 4psi, non-intercooled. It runs an Eaton roots-style supercharger sitting on top of a completely custom intake manifold. Running 30lbs injectors with a BEGI/CARTECH 2025 FMU.
The response of the motor has been substantially improved. Just tapping the throttle and you can tell this thing means business. Unfortunately, I seem to have a problem which may be fuel (running rich) related. Basically, when you're on the throttle, at some points the motor will stutter and lose power. We believe this to be the FMU... but we adjusted it down to about 3:1 boost ratio. Initially, the problem was very bad, after knocking down the FMU quite a bit, it runs much better... but still stutters sometimes.
Another thing is It may be possible that from running rich, the plugs are fouled, and under load when the psi goes up, the extra air might be blowing-out the spark... but i don't know how common that is. I won't know until i take the plugs out and check them.
Either way, before someone posts one of these:
I'm going to say that I'll have some decent pics up shortly when i get the engine bay cleaned up a bit better. My next goal is to get the SMT6 in as a data logging device, then using it later to further tune the car.
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