MULTIMEDIA (truck related) Post your Truck pictures and videos (PG-13)

STS 3 vid comp

Old Oct 18, 2005 | 08:12 AM
  #31  
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Originally Posted by 1slow01Z71
Mna you need to get that thing tuned bad I shift out of 2nd at 100 in my Z with 3.73s and 31.5" tires your truck would really scream with the right shift points. Why does Allen have the shift points so low on my n/a stock internal truck i was shifting at 6000? Then with the cam it was moved up to 6600.
From what I've been told the shift points were set conservative at first because of smaller injectors. Thats with the base STS tune he does. I now have the big injectors but don't have my in-line pump yet. I think they set the upshift lower than a NA engine because the turbo makes allot of torque from 3000rpm on up and it never drops below that when shifting.

I know what your saying, when I had the Predator tune in my truck I had it shifting at 6200rpm before the turbo install. Past 6000 was useless really, but the engine liked to rev, it just fell off after about 58-5900 rpm. I still want it to be able to rev to 5800 so it doesn't upshift to third so early.

Oh ya I forgot, I'm going to get HP Tuners next so I can tune my own stuff after the learning curve is over.
There are worries about the stock valve train on a boosted motor being able to handle it. Maybe Allen's a little gun shy after I smoked my tranny when I first did the turbo install. I did not blame him for that but I did think it would have lasted longer than a month.
To sum it all up I'm not really 100% sure why the shift points are soo conservative.
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Old Oct 18, 2005 | 06:56 PM
  #32  
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Finally! sounds great!
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Old Oct 19, 2005 | 10:45 AM
  #33  
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i'm glad the vid finally got to come up... thats a pretty quick z71

is it bad that i laughed everytime you let off and the turbo spooled down, lol
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