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Haltech Half Bridgeport Idle help

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Old Oct 9, 2009 | 07:24 AM
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From: Lindale Texas
Half Bridgeport Idle help

Ok I got the e6k working and running my car now I cant get a good idle. It keeps reving from 1500-2k over and over. And the af guage bounces to like 15.0-lean. If any half or full bridge guys could give me something to look for I appreciate it. I had a great idle when I was using megasquirt consistent brap, brap, brap ,rrrrrrrrrr,lol. Are their big differences in s4-s5 throttle bodys? I had a s4 now a s5 with the haltech.
Thanks for any ideas
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Old Oct 10, 2009 | 04:30 PM
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Vacuum leak most likely. When the idle hunts like that, you are going from lean to rich, because the computer is correcting for a high to low vacuum, respectively. Your gauge is telling you the same. 15:1 is very lean and is a problem. Find that vacuum leak!
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Old Oct 11, 2009 | 03:49 PM
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Got it not long after Iposted. Throttle butterfly needed adjusted opps. And im starting to tune it slowly afr's are like 10 at 5psi lol Ill let you guys know what final results are after couple weeks.
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Old Jan 8, 2010 | 10:37 AM
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From: Charlotte
r u running n/a?
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Old Jan 11, 2010 | 08:34 PM
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Originally Posted by RotaryPicha
r u running n/a?

Not if hes running 5psi boost.
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Old Jan 12, 2010 | 02:15 AM
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What base map are you using? Is the timing zero'd out properly?

B
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Old Jan 12, 2010 | 08:55 PM
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From: Charlotte
didnt read his second post,
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Old Jan 14, 2010 | 12:02 AM
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Some times the idle get erratic but I need to find a lock nut for the throttle. The base map is from john at PTP here is austin did for a friend of mine couple months ago. But He blew it at 17psi. And I changed the timimg to what I dug out of the megasquirt tables I copied from your old hbp maps.(when I had megasquirt) And fattened up the fuel over15psi. And pretty sure the timing is zeroed.I locked the timing at -5 and rotated the cas to the -5 mark.
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