High RPM - Datalog Stops - Tweecer

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Project Reef Blue
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Joined: Mon Sep 25, 2006 8:32 pm
Location: Ontario, Canada

High RPM - Datalog Stops - Tweecer

Post by Project Reef Blue » Sun Dec 23, 2018 12:04 pm

Hey Guys,
Looking for some guidance with my combination. I have noticed above ~5000datalog starts to slow down and by 5500rpm basically stops updating. It logs cells of the same data in large blocks - meanwhile the engine is continuing to rev up cleanly. The combination is a 93 Mustang with A9L computer running an N/A 408". Shift light set at 6400rpm. I have attached a datalog and the video taken from a test and tune session.

Is this normal?

With previous combination (NA 306") I did not experience this issue. RPM always climbed as expected and there was no stalling of the data all the way upto 6500rpm.

https://www.youtube.com/embed/1k46MSah8zI

Thanks,
Matt
Attachments
Sept 22 2017 - 12.5 28 Degrees 2017_Sep_23_11-24-11.csv
(270.34 KiB) Downloaded 8 times
93 Mustang LX
408", 10:1, TFS 11R205, Vic Jr EFI, XFI 236HR, 1 3/4 Longtubes, Bullets, Tweecer, Faceplated TKO 500, 3100lbs
10.60 @ 128mph
http://www.youtube.com/user/ProjectReefBlue

Project Reef Blue
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Posts: 97
Joined: Mon Sep 25, 2006 8:32 pm
Location: Ontario, Canada

Re: High RPM - Datalog Stops - Tweecer

Post by Project Reef Blue » Wed May 22, 2019 10:59 am

Bumping this back to the top. Swapped the shutter wheel to a Pro-M unit and TFI module to a motorcraft unit (MSD 351 distributor). Car runs good to 6600-6700rpm but having the same issues with the datalog not reading any rpm changes beyond 5500rpm. Anyone have experience with this?
93 Mustang LX
408", 10:1, TFS 11R205, Vic Jr EFI, XFI 236HR, 1 3/4 Longtubes, Bullets, Tweecer, Faceplated TKO 500, 3100lbs
10.60 @ 128mph
http://www.youtube.com/user/ProjectReefBlue

motorhead1991
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Posts: 138
Joined: Tue Nov 21, 2017 2:32 am

Re: High RPM - Datalog Stops - Tweecer

Post by motorhead1991 » Fri May 24, 2019 10:40 am

Project Reef Blue wrote:
Wed May 22, 2019 10:59 am
Bumping this back to the top. Swapped the shutter wheel to a Pro-M unit and TFI module to a motorcraft unit (MSD 351 distributor). Car runs good to 6600-6700rpm but having the same issues with the datalog not reading any rpm changes beyond 5500rpm. Anyone have experience with this?
Decipha mentioned this once I think... It's an overflow of data that the ECM can't process fast enough I think...

Someone more experienced can clarify that.
1990 Ford Ranger FLH2 conversion. Ford forged/dished pistons, Total Seal file-fit rings, Clevite rod and main bearings, Clevite cam bearings, IHI turbo, Siemens Deka 60lb/hr injectors, Ford slot MAF in custom 3" housing. Moates Quarterhorse with Binary Editor, using the PAAD6 database.

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Project Reef Blue
Regular
Posts: 97
Joined: Mon Sep 25, 2006 8:32 pm
Location: Ontario, Canada

Re: High RPM - Datalog Stops - Tweecer

Post by Project Reef Blue » Sat May 25, 2019 11:12 am

Thanks for the reply. Just got a new laptop and purchased latest BE software from Clint. Perhaps that will help. Going back to track next weekend to try datalogging again.
93 Mustang LX
408", 10:1, TFS 11R205, Vic Jr EFI, XFI 236HR, 1 3/4 Longtubes, Bullets, Tweecer, Faceplated TKO 500, 3100lbs
10.60 @ 128mph
http://www.youtube.com/user/ProjectReefBlue

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Vortech347
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Joined: Tue Sep 29, 2009 11:04 pm

Re: High RPM - Datalog Stops - Tweecer

Post by Vortech347 » Wed May 29, 2019 10:50 am

Mine does the same thing after 5800rpm. Tweecer R/T BE combo.
Matt
90 GT, 347, Vortech Si-trim (11psi), Edelbrock 6037 heads, Super Victor 8.2 EFI Ported, 80MM Pmas, 60lb EV14 Bosch Gen 4 Injectors, KB BAP, B31 Cam, T56. Tweecer RT, A9L. Software: EA/BE. 550rwhp & 513rwtq.
2003 Sonic Blue 03' Cobra 497rwhp 481tq, Pro Racer Pack
2013 Taurus SHO Performance Pack.

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