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what kind of #'s am i looking at on this setup?

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Old Jun 23, 2015 | 10:45 PM
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Tune issue
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Old Jun 23, 2015 | 10:45 PM
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Originally Posted by 2000 droptop
Ok, got the motor in and on a mustang dyno, put down 413/385. BUT, I now have an issue I hope someone can help with, seems as when I'm driving over 40 ish, whatever speed I'm at and let off the pedal, the rpms stay there like cruise control is on, ANY IDEAS other than that no lights runs strong
Which cam did you go with?
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Old Jun 23, 2015 | 11:33 PM
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Originally Posted by Darth_V8r
Which cam did you go with?
Comp cam xer 273
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Old Jun 23, 2015 | 11:35 PM
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Originally Posted by kinglt-1
Tune issue
I was thinking so, but after looking around I think it could be the t.b. spring is weak and opening on vacuum possibly
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Old Jun 24, 2015 | 08:49 AM
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Originally Posted by 2000 droptop
I was thinking so, but after looking around I think it could be the t.b. spring is weak and opening on vacuum possibly
Surprised you got that much out of a XER273 - nice work.

Did you drill the throttle body? If so, how big is the hole? At 3/16", I'll get that sometimes where it takes a few seconds to idle back down. if you're out at 1/4" you might be getting a bit much idle air.
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Old Jun 24, 2015 | 09:46 AM
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It is probably throttle follower or throttle cracker in the tune under idle airflow tuning. I had to adjust mine for the same reason. A tuner can fix that easily.
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Old Jun 25, 2015 | 12:20 AM
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Originally Posted by gagliano7
It is probably throttle follower or throttle cracker in the tune under idle airflow tuning. I had to adjust mine for the same reason. A tuner can fix that easily.
Tuner says all was done, but kept showing tps was at 1% on idle, I ported the throttle body and I think I might of took out a bit around the blade. I have a second stock t.b. I'm going to switch out to see if it makes a difference, otherwise I'm going to check for vacuum leaks, or back to the tuner. I did reset the tps, it's at .03 at idle now, tomorrow will tell
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Old Jun 25, 2015 | 12:21 AM
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Originally Posted by Darth_V8r
Surprised you got that much out of a XER273 - nice work.

Did you drill the throttle body? If so, how big is the hole? At 3/16", I'll get that sometimes where it takes a few seconds to idle back down. if you're out at 1/4" you might be getting a bit much idle air.
I didn't drill anything, and yep I was pretty happy on the numbers especially with my s60 Dana strange rearend
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Old Jun 25, 2015 | 12:42 AM
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Originally Posted by HCI2000SS
Depends on the dyno, but that's a pretty mild setup. I'd say maybe around 410 rwhp possibly
Your on, 412.8, nice guess
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Old Jun 25, 2015 | 12:29 PM
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Did you adjust your throttle blade? You will probably need to close it some since you ported the throttlebody. After adjusting you will need to do a tps reset. If you had tuning software it would be easier so you can see where your IAC counts are when car is at hot idle.
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Old Jun 25, 2015 | 01:24 PM
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Originally Posted by 2000 droptop
Your on, 412.8, nice guess
Cool!
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