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Posts posted by OldRedMack
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Ok, y'all are awesome. I've learned more from this place than I have the last 3years of talking to every mechanic I can find to try and figure this truck out. If I decide to do injectors also, should I put 427 injectors in with the 370 program? Or request the HP upgrade to the 427?
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From my experiences, low oil pressure or low coolant levels.
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1M2AL02C77M003933. No I have not done injectors yet. I know you recommend k&s, I might give them a call this week.
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I had an s467 built for it, then read that posting a couple days ago and swapped the manifold. And it helped a good bit, but you can still tell when it opens up. I thought I read somewhere that the torque curve was programmable on that engine, but when I call the local Mack dealer here in Atlanta they sound like idiots and acted like they have never even heard of the updates for that engine. So I have no idea if it has had the 12b update or not.
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As the title says I have an AMI 370 and it's a dog until 1500rpm, then all the fuel and air come in at once and it takes off like a rocket. Any ideas on whats going on? The truck has plenty of power, just all after 1500rpm.
2007 AMI 370
in Mack Truck Q & A
Posted
So. after a run on the dyno, which confirmed the weak bottom end and full power on top end, and 24hrs of downtime sitting at mack because of a corrupt file on the download. I ended up with a program they called "the smoke file" . They said it was made for the bottom end pull, and the truck has more power. But now I feel a lag in the pedal and don't know if I should get a new throttle positioning sensor or just go ahead and get the injectors. Mack tech, did the 5" exhaust come in yet? Did they give you part numbers?