« Reply #3 on: August 18, 2012, 11:12:36 pm »
I will add to Jasons post.
If you have an Si, you have to get an Si pump/parts.
We had a guy who brought his car in to us for a VERY low power complaint. It would start and idle but if you gave it more than just the lightest throttle it would bog and buck really badly. Pretty much not driveable.
Him and his buddy put a new(used) pump in and wouldn't let us put in another one even tho we knew the pressure wasn't right. "I just put that pump in there its perfect"
We finally convinced him that the pressure was wrong. We ordered an Si pump because his car was an Si and had the multiport engine in it.
the new pump was WAY bigger in physical size. We immediately knew why he was having this problem. The little wee girly pump couldn't hold pressure off idle. Of course they messed up all the wiring putting the wrong pump in, so we had to fix that too, but the car ran perfectly once we put the correct pump and sock in there for him.
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91 Eagle Talon TSi 5spd awd. GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
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