First Impressions: TTS Powerloader for Duramax LLY -
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Went to TTS Power Systems today to get a test version of their prototype towing tune for the LLY Duramax.
The owner, Steve Cole, was very friendly and informative. He showed me around his shop, then handed me the keys to his LLY shop truck with the tow tune in it. Very smooth and predictable engine output, and NO doubt that it runs harder than a stock LLY. Zero indication the truck is modified. No smoke, no surging, no noise.
I saw the dyno sheets he ran on it, and it is a 50rwhp tune. The gain is pretty much across the board.
So he pulled my PCM and uploaded the tune into it. All gauges work correctly, idles the same, sounds the same. I did some stoplight stomps, some freeway blasts, and there is no doubt there is more power. It appears the DIC fuel mileage might be more optimistic than before. I will fill up and measure actual mileage.
I am going to tow a large race trailer to Vegas and back, then check the output at my local dyno, and run it at the dragstrip in the next couple of weeks. I'll post results.
So far, so good.
The owner, Steve Cole, was very friendly and informative. He showed me around his shop, then handed me the keys to his LLY shop truck with the tow tune in it. Very smooth and predictable engine output, and NO doubt that it runs harder than a stock LLY. Zero indication the truck is modified. No smoke, no surging, no noise.
I saw the dyno sheets he ran on it, and it is a 50rwhp tune. The gain is pretty much across the board.
So he pulled my PCM and uploaded the tune into it. All gauges work correctly, idles the same, sounds the same. I did some stoplight stomps, some freeway blasts, and there is no doubt there is more power. It appears the DIC fuel mileage might be more optimistic than before. I will fill up and measure actual mileage.
I am going to tow a large race trailer to Vegas and back, then check the output at my local dyno, and run it at the dragstrip in the next couple of weeks. I'll post results.
So far, so good.
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Originally Posted by speedy02
Does first gear feel like its got any more power?Keep us updated. ![Thumb](https://www.performancetrucks.net/forums/images/smilies2/thumb.gif)
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It's a PCM tune. You can stack anything you like, if your trans is built and you don't exceed max cyl pressure.
This is not radical tune, it's a daily driver tow tune.
This is not radical tune, it's a daily driver tow tune.
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There are PCM tunes out there for the LB7 (earlier version Dura) that can really rock IF you've prepared the trans, can control turbine temps, and avoid folding the front suspension in half.
At some point, they will release such tunes for the LLY. For now, this is the only tune that exists. The LLY has twice the ram and a totally different PCM, so it will be a lot of work to get tunes developed.
The TTS LB7 shop truck ran 12.3 at Fontana on #2 only. Fontana isn't even a fast track. I'm sure similiar #'s will be available for the LLY in the future.
At some point, they will release such tunes for the LLY. For now, this is the only tune that exists. The LLY has twice the ram and a totally different PCM, so it will be a lot of work to get tunes developed.
The TTS LB7 shop truck ran 12.3 at Fontana on #2 only. Fontana isn't even a fast track. I'm sure similiar #'s will be available for the LLY in the future.
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