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Originally Posted by Blue02GT
The only way to accurately compare the two outings would be for you to post all the information from your time slips.
Then you need to look up the weather information from both outings and correct your times. I had a similar experience with mine when I added the plenum, throttle body and pullies. Initally I ran almost no better than before them but after several trips to the track I saw about
3 tenths improvement. Be sure to make a log book and track information when you run. The weather can make a 2-3 tenth difference in your times which would negate most of your improvement if there was a big difference in the D.A. btweeen those outings.
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The difference in your gearing isnt much when you think about it? but your other mods should of netted you a little more power. I would think especially with the O/R pipe and underdrive pullies?
I experienced the same problem as you my first time out this year! I changed gears from 3:73s to 4:10s added new Eaton posi and axles, subframe connectors, X2C upper & lower control arms, softer shocks in the rear, Added Trickflow upper plenum, went back to my stock CAI cause my MAC cai was leaning the car out a bit! pulled the front sway bar off and I ran 3 tenths slower, same miles per hour and my 60ft went from a 1.90 to a 2.1 :sad1:
But like "Blue02GT" said weather could be a very big factor?