[dreksnot]

Saw on DSX website they have Atlas PI up, pending harness availability. Those wideband controllers though...
.

[SOCAL.M6.ZLE]

Very exciting!

[Sillysspeed]

Looks good. I just bought an Msd intake that came with fuel rails and I have a set of 850cc injectors on the shelf. Might pull the trigger this spring

[radz28]

DSX has updated their Youtube channel with some very interesting information about their ATLAS for those that didn't know and are interested.

[jlaudio11]

Originally Posted by radz28

DSX has updated their Youtube channel with some very interesting information about their ATLAS for those that didn't know and are interested.

I'm on the deep dive video right now. Little nuggets of info from behind the curtain. Quite interesting!

[radz28]

Originally Posted by jlaudio11

I'm on the deep dive video right now. Little nuggets of info from behind the curtain. Quite interesting!

That is NO exaggeration at all.

[Megahurtz]

I just tuned an LT4 build with the ATLAS setup. It's a sweet setup.

[jlaudio11]

Originally Posted by Megahurtz

I just tuned an LT4 build with the ATLAS setup. It's a sweet setup.

Did you play with the 180 injection window? Do you have any power comparison to maybe a similar thp port setup that you would be willing to share?

[SOCAL.M6.ZLE]

Originally Posted by Megahurtz

I just tuned an LT4 build with the ATLAS setup. It's a sweet setup.

Thats awesome... I know it's early to ask but how does this compare to THPSI?
Justin White seems to prefer the THPSI set up based on the level of control... Sorry im not a tuner

[RobZL1]

Very nice video.

A little off topic, but with the cost of the Goliath/+50% bundle at $4600, I think it's cool that the DI and PI options basically cost the same if you currently have a 2650 with the stock lid.

When you factor in all the costs, it's basically the same if you still need to buy the low profile lid:

Total of the below = $4500-4800
-Atlas + Mount = $2100
-Port Plates & PCV spacer = $720
-Injectors = $600 minimum
-Port Plumbing/fittings = $100
-Low Profile SC lid for a Maggie = $1000 or 1300 (depending on DSX vs THP)

Anyway, nice that there are options and the price isn't really a deciding factor. In my particular setup and with what I already have and need to buy, I'd pull the trigger on the Goliath setup.

[Megahurtz]

Originally Posted by jlaudio11

Did you play with the 180 injection window? Do you have any power comparison to maybe a similar thp port setup that you would be willing to share?

Yes I played with the window but basically ended up extending it slightly. It's sort of an easy button to lean on the DI more or less but with limits. There is no power difference compared to 2HPSI from a functionality standpoint. The only difference in power is how much you lean on port vs DI. Port Injection will always make less power vs DI is all else is equal. But the overhead of having port will let you push the power further.

Originally Posted by SOCAL.M6.ZLE

Thats awesome... I know it's early to ask but how does this compare to THPSI?
Justin White seems to prefer the THPSI set up based on the level of control... Sorry im not a tuner

I've tuned both. The advantage of the 2HPSI is that you have more control over when the port system kicks in. In some setups this is an advantage but not always. On the ATLAS side, its almost like an easy button. I do wish it had some more granular ability to activate port when you want, but its not really an issue. You just have to play with the tune a bit.

Basically 2HPSI triggers via MAF and ATLAS triggers by SOI. Both have real time correction capability. Overall it took less time to dial in the ATLAS setup vs the 2HPSI, especially if you're not an experienced tuner. A novice could do the ATLAS on their own. But you have to be advanced to do the 2HPSI.

I would pick the ATLAS setup 8 out of 10 times for the stuff I tune. Other tuners may tune things that don't match up with me and have different opinions. I have a couple of setups where I find prefer the 2HPSI because I can start the injection earlier and a couple other things but those are specific cases. It's more the capability/flexibility of the Reflex controller at that point.

Dave @ DSX and Team did a great job on the Atlas platform and if you're looking to run full E on your LT4 street setup, you won't be disappointed.

[SOCAL.M6.ZLE]

Originally Posted by Megahurtz

Yes I played with the window but basically ended up extending it slightly. It's sort of an easy button to lean on the DI more or less but with limits. There is no power difference compared to 2HPSI from a functionality standpoint. The only difference in power is how much you lean on port vs DI. Port Injection will always make less power vs DI is all else is equal. But the overhead of having port will let you push the power further.




I've tuned both. The advantage of the 2HPSI is that you have more control over when the port system kicks in. In some setups this is an advantage but not always. On the ATLAS side, its almost like an easy button. I do wish it had some more granular ability to activate port when you want, but its not really an issue. You just have to play with the tune a bit.

Basically 2HPSI triggers via MAF and ATLAS triggers by SOI. Both have real time correction capability. Overall it took less time to dial in the ATLAS setup vs the 2HPSI, especially if you're not an experienced tuner. A novice could do the ATLAS on their own. But you have to be advanced to do the 2HPSI.

I would pick the ATLAS setup 8 out of 10 times for the stuff I tune. Other tuners may tune things that don't match up with me and have different opinions. I have a couple of setups where I find prefer the 2HPSI because I can start the injection earlier and a couple other things but those are specific cases. It's more the capability/flexibility of the Reflex controller at that point.

Dave @ DSX and Team did a great job on the Atlas platform and if you're looking to run full E on your LT4 street setup, you won't be disappointed.

Thanks for taking the time on that explanation. Great info for sure. I think it is awesome that DSX is pushing the boundaries, and was able to bring a complicated product to market as fast as they have. Seems like it will be successful and just another option for us to go faster and make more power.

[ZL14ever]

Originally Posted by Megahurtz

Basically 2HPSI triggers via MAF and ATLAS triggers by SOI.

I am wondering how this will affect a 1000+rwhp car launching in 1st gear at the drag strip. Reflex can probably start port injection almost immediately, while Atlas waits for 180 deg injection window & then starts port injection. Things happen so fast in 1st gear between 1000-5000 RPM

[KingLT1]

Originally Posted by ZL14ever

I am wondering how this will affect a 1000+rwhp car launching in 1st gear at the drag strip. Reflex can probably start port injection almost immediately, while Atlas waits for 180 deg injection window & then starts port injection. Things happen so fast in 1st gear between 1000-5000 RPM

If you don't dip below 180 EOI then port isn't needed therefore it's a non-issue. You have to remember 1st gear is so steep that there is very little load on the motor. It will likely tolerate being leaner for 1-2 seconds. This is why I pay no attention fueling in logs that are spinning the tires and below 4th gear in a A10.