stratplayer24
10+ Year Contributor
- 63
- 5
- Sep 21, 2008
-
Pittsburgh,
Pennsylvania
1998 gst with 7 bolt motor, FP Black and external wastegate off the manifold. hooked up the Ingersoll Rand controller using both top and bottom ports the way that wiki says. top port T'd into compressor housing and bottom port of waste gate. side with only one port is hooked up to top of wastegate.
my problem is I have duty cycle set to 0. it will build 28PSi in third gear then drop it off to wastegate (12psi) then build back up to 28 and keep cycling 28-12-28-12. when I hook up vac lines from compressor housing straight to the bottom port of wastegate it will run a solid 12 psi all day. why is it building and cutting, building and cutting? has 12v to solenoid when key is in the ON position.
posting a log of driving the car around and doing a pull around 430 seconds. this is a new motor with about 200 miles on It. log is from about a month ago since this log I have been running vac line straight to wastegate just to run 12psi, now that I am looking into getting it on the dyno I need to figure out the IR solenoid. also since then I have been tweaking STFTs etc. like I said log is from a month ago and have been searching on the forums for someone else with a similar problem and have not found one.
my problem is I have duty cycle set to 0. it will build 28PSi in third gear then drop it off to wastegate (12psi) then build back up to 28 and keep cycling 28-12-28-12. when I hook up vac lines from compressor housing straight to the bottom port of wastegate it will run a solid 12 psi all day. why is it building and cutting, building and cutting? has 12v to solenoid when key is in the ON position.
posting a log of driving the car around and doing a pull around 430 seconds. this is a new motor with about 200 miles on It. log is from about a month ago since this log I have been running vac line straight to wastegate just to run 12psi, now that I am looking into getting it on the dyno I need to figure out the IR solenoid. also since then I have been tweaking STFTs etc. like I said log is from a month ago and have been searching on the forums for someone else with a similar problem and have not found one.