Oops. Forgot bout the shift points

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I'm gonna adjust modulator Sunday' cause I'm getting a little flare up b/t 1 and 2.
From 1-2, it shifts at ~5300 rpm and from 2-3 it shifts at ~4900. Usually, I just let it shift by itself if already rolling cause I get a great jump on the opponent, but if I'm running from the light (if against a worthy opponent), I'll manually shift at 5400 rpm.
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'79 Mustang Coup w/ 4" Cowl
Stock 5.8L, C4 w/ shift kit
Holley 750 cfm, Edelbrock Performer RPM intake
1 5/8" MAC shorty headers, Al driveshaft
2.5" Off road H-pipe, 2-chamber Flowmasters
Front: 225/60/15, Rear: 255/60/15 Eagle GT II
Weld wheels (15x6;15x8), 8.8" Rear w/ 3.55s
14 x 4” K&N air filter (getting the Xtreme setup soon)
"Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body