ZL1 Colorado: take 2
09-14-2018, 04:04 AM
#42
Got the new drive shaft in. Fits but need to clearance the crossmember for when the drivetrain torques over.
Still making more little refinements... Noticed the transition to boost is pretty sluggish so I am putting some larger vacuum lines on the bypass valve actuator. The ones that came with the blower look nice but seem to be purposefully restrictive. Also enabled the supercharger logic in the calibration and noticed vacuum creeping up pretty heavy at high RPM on the SCIAP sensor. Losing at least 1psi of boost at the shift point. So the air filter needs to be replaced as well... More power to come! This might have been an impressive build 10+ years ago
Still making more little refinements... Noticed the transition to boost is pretty sluggish so I am putting some larger vacuum lines on the bypass valve actuator. The ones that came with the blower look nice but seem to be purposefully restrictive. Also enabled the supercharger logic in the calibration and noticed vacuum creeping up pretty heavy at high RPM on the SCIAP sensor. Losing at least 1psi of boost at the shift point. So the air filter needs to be replaced as well... More power to come! This might have been an impressive build 10+ years ago
The following users liked this post:
kbracing96 (09-14-2018)
The following users liked this post:
kbracing96 (09-14-2018)
09-23-2018, 07:02 PM
#48
Lol, LS3 specific shift points. But it is shifting a bit prematurely, especially the 1>2. Despite the boost falling off up top, it still has a surprisingly strong top end for only a 204 intake duration cam. I just replaced the air filter, but the SCIAP still reports a 10kpa drop between idle RPM and the shift point. Need to hog out the air box inlet I think.