Finally got track times : (
06-03-2015, 02:14 PM
#1
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Finally got track times : ( 11.9s @112 3740 race wt.
3.55s Yank 3400 multi disc. 30"DRs
leavin off T.brake on 9psi
Hitting about 14psi down track 12*
On3 76 80lb injectors 044 pump
4" DP 2" hotside , 12x3x14
799 heads, btr 660 kit,
tick turbo cam
217/228 637/623 114+4
I've confirmed the boost controller psi and accuracy. I know its heavy but it Just seems like it should have more in it. was having trouble shifting manually because i didn't have the programmer with me.
what do you guys think?
3.55s Yank 3400 multi disc. 30"DRs
leavin off T.brake on 9psi
Hitting about 14psi down track 12*
On3 76 80lb injectors 044 pump
4" DP 2" hotside , 12x3x14
799 heads, btr 660 kit,
tick turbo cam
217/228 637/623 114+4
I've confirmed the boost controller psi and accuracy. I know its heavy but it Just seems like it should have more in it. was having trouble shifting manually because i didn't have the programmer with me.
what do you guys think?
Last edited by LT1PWRD; 06-03-2015 at 09:24 PM.
06-03-2015, 03:09 PM
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Yank 3400 billet multi disc
Trans is fine, but the operator(me) kept trying to man shift it but it wasn't happening. And that was screwing up shift timing. Most times it would not hit 3rd til i let out a little but by then it was too late. Ran outta track tim to try (remember ) just doing a damn foot brake and let it shift itself.
06-03-2015, 03:23 PM
#4
The 11.9 at 112 is right on for a typical n/a setup. Seems your down about 200 hp. 3750 is hefty but not that heavy to slow you down that much. Fuel flow? Any idea? Do you have a manual boost gauge or are you relying on electronics? What rpm are you shifting at? To be down on power that much something is way off. Check for full throttle?
06-03-2015, 03:53 PM
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Why in the lords name are you running a 30inch tire? A 28 would be the ticket.
What kind of trans? If 4l60 or 80 just put it in d3 and let it shift by itself, dont do anything.
Timing is low but **** 112mph is like you were letting of half way down the track.
There is more to this story, a lot more.
What kind of trans? If 4l60 or 80 just put it in d3 and let it shift by itself, dont do anything.
Timing is low but **** 112mph is like you were letting of half way down the track.
There is more to this story, a lot more.
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06-03-2015, 07:12 PM
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The 11.9 at 112 is right on for a typical n/a setup. Seems your down about 200 hp. 3750 is hefty but not that heavy to slow you down that much. Fuel flow? Any idea? Do you have a manual boost gauge or are you relying on electronics? What rpm are you shifting at? To be down on power that much something is way off. Check for full throttle?
06-03-2015, 07:24 PM
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Why in the lords name are you running a 30inch tire? A 28 would be the ticket.
What kind of trans? If 4l60 or 80 just put it in d3 and let it shift by itself, dont do anything.
Timing is low but **** 112mph is like you were letting of half way down the track.
There is more to this story, a lot more.
What kind of trans? If 4l60 or 80 just put it in d3 and let it shift by itself, dont do anything.
Timing is low but **** 112mph is like you were letting of half way down the track.
There is more to this story, a lot more.
4L80e
06-03-2015, 07:36 PM
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So i just got back from some test hits. Did a bunch in D3 and manually, same ****. This was my frustrating fight on every pass. Soon as i figured out to let off a little to get a 2-3,it got faster. Driving around and up to 80%ish throttle it will auto or man shift. So until i get this figured out this is my biggest time killer. I tried making adjustments to max rpm shift but to no avail, no wot 2-3. It will wot 1-2 no problem.
06-03-2015, 10:41 PM
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Can you email or post up an hptuners file of your tune. You most likely need to adjust the shift mph. It looks at mph and rpm to command a shift. What you do to start is see what mph you are at in 2nd gear at the rpm you want to shift at. Then you lower the shift mph for 2-3 shift by 3-5mph.
So lets say you want to shift at 6000rpm, hold it in 2nd gear until you are at 6k rpm write down or save that log file.
So lets say you want to shift at 6000rpm, hold it in 2nd gear until you are at 6k rpm write down or save that log file.
06-04-2015, 06:12 AM
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Can you email or post up an hptuners file of your tune. You most likely need to adjust the shift mph. It looks at mph and rpm to command a shift. What you do to start is see what mph you are at in 2nd gear at the rpm you want to shift at. Then you lower the shift mph for 2-3 shift by 3-5mph.
So lets say you want to shift at 6000rpm, hold it in 2nd gear until you are at 6k rpm write down or save that log file.
So lets say you want to shift at 6000rpm, hold it in 2nd gear until you are at 6k rpm write down or save that log file.
06-04-2015, 06:16 AM
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car is still not right tho...
it says after wot tps threshold (lets say 98%) it will make shifts based on rpm. So i adjust it to 6000 and then 5600 rpm and still,no 2-3 shift auto on manual unless i let off a hair on the throttle. What am i doing wrong?
Last edited by LT1PWRD; 06-04-2015 at 06:24 AM.
06-04-2015, 07:27 AM
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wish I woulda realized how important that was before....
i could buy a $1500 data logging Racepak dash tho...
