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Using TCS/ASR For timing??

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Old May 21, 2020 | 10:53 AM
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Default Using TCS/ASR For timing??

Thinking of using the TCS/ASR tables to pull timing for spray. Anyone else using this method and what's the cons to it?

Nitrous will be activated via ground circuit so that will also ground R53.
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Old May 22, 2020 | 03:34 PM
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I would think the only con to doing it is you don’t have the ability to adjust your tables when you change the jetting for different shots unless you have hptuners. I could be wrong though. I’m getting ready to take my car to have it tuned in a couple weeks and I am using the NOS mini progressive control with the yellow wire tied into pin 53 to pull timing.
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Old May 22, 2020 | 04:14 PM
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Originally Posted by td1168
I would think the only con to doing it is you don’t have the ability to adjust your tables when you change the jetting for different shots unless you have hptuners. I could be wrong though. I’m getting ready to take my car to have it tuned in a couple weeks and I am using the NOS mini progressive control with the yellow wire tied into pin 53 to pull timing.
Pin 53 is the ASR Signal
So you will be doing exactly what the OP is asking about.
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Old May 27, 2020 | 05:21 PM
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I do have HP Tuners and was kind of messing around with it on a friends car. We figured out what needs to be changed and to what values. He hooked up a makeshift ground on a toggle and it pulled exactly what we set in the tables.
James Short devised this idea and its impossible to get a response from him on how well it works and if he's still using this method for nitrous cars.

I was hoping others on here were using it as well and how they liked it.
I do have the LNC 2000 box sitting in a box, but hate the amount of wiring laying in there. Whereas if the PCM can control it, no need for the LNC box and loads of wiring. Also, by default, the more computers you have, the more probable a failure somewhere.
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Old May 29, 2020 | 12:20 AM
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James Short didn't come up with this lol. Guys have been using the ASR, IAT, P/N tables for about 15 years for nitrous-specific timing.

The biggest downside to using the TCS tables is that you only get a single row. You DO get to change the amount of timing retard by RPM, though.
Using the IAT method, you can build a box that allows you to adjust the amount of timing pulled for different jettings without opening the tune back up.
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Old May 29, 2020 | 08:42 AM
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FYI, james is the reason that table was populated in HPT. And it hasn't been 15 years. HPT didn't populate that table for changes until roughly 2013.

For the most part, the car will only be seeing a 150 shot. But if I do change jetting, it's only and 18 sec load time.
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Old May 30, 2020 | 03:38 AM
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Originally Posted by SAPPER
FYI, james is the reason that table was populated in HPT. And it hasn't been 15 years. HPT didn't populate that table for changes until roughly 2013.

For the most part, the car will only be seeing a 150 shot. But if I do change jetting, it's only and 18 sec load time.
You're right, he was. But you're assuming HPTuners was the first/only thing used to tune LS engines, and it was definitely not.
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Old May 30, 2020 | 09:00 AM
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While that may be true the OP was referring to HPT in this instance. So its irrelevant what other platforms where/weren't doing and when.
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