YOOOO
15+ Year Contributor
- 117
- 0
- Apr 18, 2008
-
Woodbridge,
Virginia
To the point: Car was tuned on V2 by the best DSM tuner in the area. Car ran amazing for about 2 weeks, and then inexplicably started running either really rich or really lean at partial throttle depending on it's mood. It always runs rich in boost. Plugs and wires are new (NGK).
Since then I've:
-tested and fixed all boost leaks
-upgraded DSMlink from V2 to V3
-ditched the GM MAF w/translater and went speed density
-swapped igniters
-swapped CAS's
-swapped fuel pressure regulators
-checked the o ring on the fuel pump
-replaced the MPI/MFI relay
-swapped TPS sensors
-tried every possible trick with DSMlink (no codes are being thrown)
Nothing has helped it. It is impossible to get the injector cycle duties under control at partial throttle and idle (when it runs rich). Going to try swapping injectors from a friend next. What else should I try? I know some pretty damn knowledgeable DSM people, and none of them have ever seen anything like this. Car is a 95 with a 2.3L 6 bolt.
Since then I've:
-tested and fixed all boost leaks
-upgraded DSMlink from V2 to V3
-ditched the GM MAF w/translater and went speed density
-swapped igniters
-swapped CAS's
-swapped fuel pressure regulators
-checked the o ring on the fuel pump
-replaced the MPI/MFI relay
-swapped TPS sensors
-tried every possible trick with DSMlink (no codes are being thrown)
Nothing has helped it. It is impossible to get the injector cycle duties under control at partial throttle and idle (when it runs rich). Going to try swapping injectors from a friend next. What else should I try? I know some pretty damn knowledgeable DSM people, and none of them have ever seen anything like this. Car is a 95 with a 2.3L 6 bolt.
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