Ran truck for first time at track.. Disapointed!
10-27-2012, 01:15 PM
#1
Staging Lane
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Ran truck for first time at track.. Disapointed!
Hye guys i just ran my truck at the track for first time last night and im disapointed.
Truck Specs:
2007 RCSB 4.8
Trick kit Hot side w/ 76mm On3 turbo w/.96
Stock pump + Walbro on hobbs (4psi)
4L60e with TrailBlazer Stall - 3.73 gears
92 pump gas
TR6 @ .026 gap
11º / 12º Timing in Wot
AFR around 10.7 (still runing rich)
12 psi
Took it to the track, and ran a 14.29
(Sorry, our track has no 60ft, or Speed)
Bumped up the boost to 14psi, and ran 14.40 misfiring.
Tuning is being done by BlackBear, as i have minimal knowledge, and there are NO tuners in my area, i live in Merida, Yuctan, MEXICO.
before this last tune update, the truck was sputtering, popping, etc. and timing was at 8º / 8.5º, AFR practically the same, maybe a tad richer, and also 12 psi.. I ran against a friends C5 corvette and won... last night i raced against him, and i lost. eventhough timing is a better now, and popping/sputtering is very minimal now.
I am planing on adding a 4L80 and a 3000 Stall, but im still saving up.
Help me here! what could be my problem? why is the truck this slow?
thanks!
Truck Specs:
2007 RCSB 4.8
Trick kit Hot side w/ 76mm On3 turbo w/.96
Stock pump + Walbro on hobbs (4psi)
4L60e with TrailBlazer Stall - 3.73 gears
92 pump gas
TR6 @ .026 gap
11º / 12º Timing in Wot
AFR around 10.7 (still runing rich)
12 psi
Took it to the track, and ran a 14.29
(Sorry, our track has no 60ft, or Speed)
Bumped up the boost to 14psi, and ran 14.40 misfiring.
Tuning is being done by BlackBear, as i have minimal knowledge, and there are NO tuners in my area, i live in Merida, Yuctan, MEXICO.
before this last tune update, the truck was sputtering, popping, etc. and timing was at 8º / 8.5º, AFR practically the same, maybe a tad richer, and also 12 psi.. I ran against a friends C5 corvette and won... last night i raced against him, and i lost. eventhough timing is a better now, and popping/sputtering is very minimal now.
I am planing on adding a 4L80 and a 3000 Stall, but im still saving up.
Help me here! what could be my problem? why is the truck this slow?
thanks!
10-27-2012, 02:39 PM
#3
Staging Lane
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I agree theres nothing better than an in person dyno tune.. but sadly thats not possible..
Tuning is done via AutoCal...
I also noticed that 3rd gear, the truck just dies
Tuning is done via AutoCal...
I also noticed that 3rd gear, the truck just dies
10-27-2012, 02:44 PM
#4
TECH Junkie
Looks like you may have to purchase software to get a log of what is going on. That way he can get the tune way closer. Good luck to you!
10-27-2012, 02:46 PM
#5
Staging Lane
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I DO send him logs, with this last tune truck FELT like it was going a bit harder, and stopped stuttering, but apparently its slower than before.. I was expecting low 13s from it
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10-27-2012, 03:06 PM
#8
Staging Lane
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Well taking a trip up there is practically impossible.. im 36 hours away from the border with the US, plus another 5 hours to San Antonio..
