MAP ECU question
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From: Raymore, MO
MAP ECU question My brother in law came over last night with questions on why his truck was all of a sudden running bad. Let me give you all the data first.
95 Chevy truck
96 350 truck motor fuel injected
Procharger P1sc supercharger
stock stall converter
brand new MAP ecu unit
He had a shop install the MAP ecu (I guess a unit that tricks the computer somehow) and then dyno the truck on a Mustang dyno. His numbers were less than stellar. 202 rwhp and 300 rwtq. I would think rwhp should be atleast in the 280/300 range on a Mustang dyno.
The truck feels like it is hitting a wall. In first gear, it takes forever to climb through the rpm's (even bucks a little), second is a little better, then third feels great.
My thought was the computer is pulling timing out, at least that is what it feels like. But why? I relate it to the MAP ecu because it happened as soon as it was plugged in.
So I tell him the easiest thing to do is unhook the new MAP ecu. But apparently it is hard wired and such. So not an easy task. So I figured I would toss this post up to see if anybody had other ideas before he unhooks it.
Thanks.
95 Chevy truck
96 350 truck motor fuel injected
Procharger P1sc supercharger
stock stall converter
brand new MAP ecu unit
He had a shop install the MAP ecu (I guess a unit that tricks the computer somehow) and then dyno the truck on a Mustang dyno. His numbers were less than stellar. 202 rwhp and 300 rwtq. I would think rwhp should be atleast in the 280/300 range on a Mustang dyno.
The truck feels like it is hitting a wall. In first gear, it takes forever to climb through the rpm's (even bucks a little), second is a little better, then third feels great.
My thought was the computer is pulling timing out, at least that is what it feels like. But why? I relate it to the MAP ecu because it happened as soon as it was plugged in.
So I tell him the easiest thing to do is unhook the new MAP ecu. But apparently it is hard wired and such. So not an easy task. So I figured I would toss this post up to see if anybody had other ideas before he unhooks it.
Thanks.
