not shore where and how to start tuning my vu ls1 & l67

General Tuning Questions And Discussions
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not shore where and how to start tuning my vu ls1 & l67

Postby s/c-3800 » Fri Nov 02, 2018 12:44 pm

new to the whole idea of tuning and consumed by it . i have a vu ls1 with auto ecu running a tr6060 6 speed manual . and a vt l67 with auto ecu running getrag 260 5 speed . the ls1 is running the otr and mafless auto tune .. i have since upgraded to 102mm throttle body ,6 speed conversion and extractors no cats to dual 3" so i have a few issues as listed
high idle (fuel&air ratios)
vats
o2 sensor
no fuel econ (250 km per tank if lucky)

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Re: not shore where and how to start tuning my vu ls1 & l67

Postby antus » Sat Nov 03, 2018 4:00 pm

at this stage you'll need commercial software to tune the ls1. Exactly what will depend on whats been done to it before. If its running a custom os for the mafless you'll need the tools the tuner used to set up. Its possible that they may have tuner locked it, at which point you'll need them to unlock it for you. Initially you could do something like get a usb allpro adaptor http://www.obddiag.net/products.html and use our pcmhammer software viewtopic.php?f=3&t=6080 to identify and possibly read the pcm. If you can read it, going ahead will be reasonably straight forward. If you cant the OSID (operating system) that it reports might help point you towards one of the aftermarket tools.

For the vt l67, would would be running a memcal computer and would tune it with an aldl cable and one of our pcm nvrams. See the hardware info in the FAQ area (link near top right) for more information. Typically you'd swap it to be "the1's enhanced" operating system as the definitions for tunerpro that are supplied with it are the best you'll find.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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