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Thread: Hard start after custom tune

  1. #1
    SCH Member
    Join Date
    Jun 2005
    Posts
    50

    Hard start after custom tune

    Just had my s-trim project completed. Stock cam, 36lb injectors and 8psi of boost netted 370rwhp. Later added girdle, comp cam and upgraded to 42lb injectors with same boost netted 465rwhp and 434ft lb of torque.

    Now I have two problems. One starting this thing is a pita. The large injectors even with the custom tune is at times hard to start. The second problem is anytime I rev past 5,200 rpm I get oil shooting out of the dipstick.

    Any input would be appreciated.

  2. #2
    SCH Moderator "SN Guru" speedytang's Avatar
    Join Date
    Dec 2002
    Location
    Marengo, Ohio
    Posts
    2,028
    The tuner did not take out enough startup fuel during a warm start cycle. If you hold the throttle to the floor which shuts off the injectors it will start right up. Lots of information on the pressure problem if you do a search because it has been beat to death on these Forums. lol

  3. #3
    SCH Member
    Join Date
    Jun 2005
    Posts
    50
    Problem was not with tune. Problem ended up being stock ignition module. Car would start up fine while cold. As soon as it got to operating temp the car became almost impossible to start.

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