Track finally open

[Aves]

Well local track finally opened for the year. So took truck out to see how she is running First pass not bad still bit rich on tip in and something funky going on at the top end but first times. Denisty alt. was 1966

first run:
60'- 2.10 (.15 better then last year)
330'-5.7932
1/8-8.7038
mph-84.10
1000'-11.231
1/4-13.3518
mph-106.99
http://my.photodump.com/Yort/db2e7176aa32d83d-T.jpg (http://www.photodump.com/Yort/db2e7176aa32d83d.jpg.html)

From there just went down hill. Can see how in third it just kinda stalls out and loads up. From there just got worse. Next pass for some reason would only make 8lbs boost in 3rd gear(stll make 10 in 1st and 2nd), and ready started to bog once in third. 3rd and 4th pass would not make over 6lbs boost and severly bog stall out from there

last run-
60'-2.21( Bad launch)
330-6.0869
1/8-9.0981
mph-82.25
1000'-11.6754
1/4-13.8325
mph-105.24
http://my.photodump.com/Yort/045769aafb638391-T.jpg (http://www.photodump.com/Yort/045769aafb638391.jpg.html)

Can see how long it stayed in third.

Question I have is what could be a cause for this to only happen in third? Could convertor be causing the extra load on it at the higher speeds? Does anyone know if you can adjust the lock-up of the convertor with SCT?
Also at idle should you have constant flow of air out of the Bov? Running the stock Vortech bov on it still. Probably should upgrade it just have not had yet.



Troy

[Intense RT]

Well local track finally opened for the year. So took truck out to see how she is running First pass not bad still bit rich on tip in and something funky going on at the top end but first times. Denisty alt. was 1966

first run:
60'- 2.10 (.15 better then last year)
330'-5.7932
1/8-8.7038
mph-84.10
1000'-11.231
1/4-13.3518
mph-106.99
http://my.photodump.com/Yort/db2e7176aa32d83d-T.jpg (http://www.photodump.com/Yort/db2e7176aa32d83d.jpg.html)

From there just went down hill. Can see how in third it just kinda stalls out and loads up. From there just got worse. Next pass for some reason would only make 8lbs boost in 3rd gear(stll make 10 in 1st and 2nd), and ready started to bog once in third. 3rd and 4th pass would not make over 6lbs boost and severly bog stall out from there

last run-
60'-2.21( Bad launch)
330-6.0869
1/8-9.0981
mph-82.25
1000'-11.6754
1/4-13.8325
mph-105.24
http://my.photodump.com/Yort/045769aafb638391-T.jpg (http://www.photodump.com/Yort/045769aafb638391.jpg.html)

Can see how long it stayed in third.

Question I have is what could be a cause for this to only happen in third? Could convertor be causing the extra load on it at the higher speeds? Does anyone know if you can adjust the lock-up of the convertor with SCT?
Also at idle should you have constant flow of air out of the Bov? Running the stock Vortech bov on it still. Probably should upgrade it just have not had yet.



TroyI'm n/a so not sure about the bov.

Are you referring to the leveling off (flat line) of the rpm's? Mine does that too and haven't messed with my SCT yet to try to get rid of it. I know the lock up can be adjusted though if that's the problem.

[Aves]

talked to sean and we are going to take the lock out out with the SCT. Hopefully this can help narrow do what's wrong. Only other thing I was wondering is if stock fuel pump having problems keeping up. Have pressure gauge. But never had chance to watch it.


Troy

[Intense RT]

talked to sean and we are going to take the lock out out with the SCT. Hopefully this can help narrow do what's wrong. Only other thing I was wondering is if stock fuel pump having problems keeping up. Have pressure gauge. But never had chance to watch it.


Troy

Man if you wouldn't mind, let me know what ends up working out with that flat spot.

Fuel? Hmm...it should be enough volume to make the pressure.

Is the brown line IAT in Farenheit? Dang, didn't know you could change from Celsius...if so...doh

[Addicted2Blue00]

im jsut an idiot about this stuff but it looks to me some timing so bein pulled in 3rd that wasnt the same as 1st n 2nd. also your shiftin it by the gas pedal? if so try doin the shiftin by the gear shifter as your lettin off the throttle when changin which im thinkin this by lookin at the tps, you want your a/f ratio around 13-13.5 which you are running mostly rich

[Aves]

Yea sometimes the trans blows past the shift point on 1st to 2nd so have to slightly lift to shift it. 3rd I do manually. I don't see the difference in the timing between the gear you are seeing. As far as a/f with the s/c I have it set around 12.5/1 without with. It does seem rich with the meth but it does seem to like it. I was going to place with different nozzles but forgot wrench and ran into the 3rd gear issues.

Troy

[Addicted2Blue00]

parts i circled in black is the tps which also shows how the gas pedal is bein pushed, the green part is the timing area i was talkin about

[Aves]

parts i circled in black is the tps which also shows how the gas pedal is bein pushed, the green part is the timing area i was talkin about

Yea the first one is I had to dip for it to shift. Suppose to actually shift around 5600 and as ya see by rpms was over 5900 when I let up for it to shift. Second tip and third I really cant explain espically the third dip. Hmm if it lost signal from tps for a min may explain some of the stall out. Thanks for pointing that out. As far as the green circle that is actually the IAT you have mark. Timing is the blue line.

Troy

[Addicted2Blue00]

i just seen the "deg" and took it as timing, i just got into dataloggin, my logs are pretty screwed up cept for the rpm and tps, gotta take care of a exhaust leak that throwin off the a/f, set up the vss, setup timing and get my map reading to not be "0".

[krusty_R/T]

im jsut an idiot about this stuff but it looks to me some timing so bein pulled in 3rd that wasnt the same as 1st n 2nd. also your shiftin it by the gas pedal? if so try doin the shiftin by the gear shifter as your lettin off the throttle when changin which im thinkin this by lookin at the tps, you want your a/f ratio around 13-13.5 which you are running mostly rich
You want 13 N/A...He has a Vortech :jester:

[krusty_R/T]

Yea sometimes the trans blows past the shift point on 1st to 2nd so have to slightly lift to shift it. 3rd I do manually. I don't see the difference in the timing between the gear you are seeing. As far as a/f with the s/c I have it set around 12.5/1 without with. It does seem rich with the meth but it does seem to like it. I was going to place with different nozzles but forgot wrench and ran into the 3rd gear issues.

Troy
12.5:1 on 91 octane? To me, that's lean without the meth. On e85, that would probably be okay, but not pump gas.

[Aves]

Yea the first one is I had to dip for it to shift. Suppose to actually shift around 5600 and as ya see by rpms was over 5900 when I let up for it to shift. Second tip and third I really cant explain espically the third dip. Hmm if it lost signal from tps for a min may explain some of the stall out. Thanks for pointing that out. As far as the green circle that is actually the IAT you have mark. Timing is the blue line.

Troy

Started thinking more on this log. Actually the third marked dip in the tps was me letting out of it then re gassing it trying to figure out why truck would not go :doh:

[Aves]

12.5:1 on 91 octane? To me, that's lean without the meth. On e85, that would probably be okay, but not pump gas.

On e85 that would really really lean. But you are right it is on lean side for our shitty 91 octane gas. But never leave home without the Meth so all is good.:burnout:

[Addicted2Blue00]

You want 13 N/A...He has a Vortech :jester:
i said i was an idiot, ive always seen it as 12.5-13 best for tq and 14.-14.5 best for hp so wouldnt the best be 13.5?

[Aves]

Well got new tune from Sean. Have lock-up moved up to 5100rpm and a slight adjustment to intial tipin again. So hopefully if it doesn't ran will be able to check it out next Sat.


Troy

[krusty_R/T]

On e85 that would really really lean.
Nope. If you are still going by the same scale on your wideband, it has been just perfect for us DSM guys. E85 is very timing friendly :biggthumpup: