Dual Super Short Intake System (DSSIS)

[SuperPete]

SO, this is prototype only, still testing, but this is what I came up with it, dual intake, super short pipes, filters pretty much right at the turbos, yes it sucks some hot air, but when you move it does very well pulling decent cold air, check out video I just posted on youtube:

 

[yaycandy]

Sure is alot cheaper than buying a epp dual intake. Frees up some space under the hood also.

 

[SuperPete]

plenty room for Meth kit and some...

 

[FiveLeeter918]

how are IATs? I'd be interested in seeing a log with how spark is affected if IATs are elevated.

 

[ridered74]

how are IATs? I'd be interested in seeing a log with how spark is affected if IATs are elevated.

I'd bet they're like snoop dog.

 

[SuperPete]

how are IATs? I'd be interested in seeing a log with how spark is affected if IATs are elevated.

Spark will be ******** at elevated IAT2, advance timing taken away.
Slight retard at 100F and and heavy one pass 120F

The goal is to keep temps under 120 or even under 100F at all times, and like I mentioned, once you get it moving, it does that just fine, going 35mi/h or more holds temps normal and it recovers from heat-soak fast from the stop, in seconds it cools down because you have less of pipes and no airbox heat-soaking.
It's the stop and go that's killing this setup.
I should probably record one before taking this thing down

 

[FiveLeeter918]

Spark will be ******** at elevated IAT2, advance timing taken away.
Slight retard at 100F and and heavy one pass 120F

The goal is to keep temps under 120 or even under 100F at all times, and like I mentioned, once you get it moving, it does that just fine, going 35mi/h or more holds temps normal and it recovers from heat-soak fast from the stop, in seconds it cools down because you have less of pipes and no airbox heat-soaking.
It's the stop and go that's killing this setup.
I should probably record one before taking this thing down

yes, this is why I have concerns about this setup. at 49*F ambients it may not have an issue, but southern states when it hits 100F this setup will be blistering.

 

[twobitcoder]

There's a reason why perf cars have ducting away from engine. I know you already admitted this but why build it in the first place?pulling air right next to the engine block?

 

[SuperPete]

Like I sad, once you get moving, 30 sec in to the drive I am from 140 to 90, that is a one fast temp drop.
now, I had AirAid system on the car and I know what temps look like, heat the car up to full operating temps, park it for 5 min, get back in it, all the pipes and airbox are measuring 140-160F because they soaked it the heat right, now it takes good 3-5 min of highway speeds for the intake air to strip down heat from the pipes, and bring temps down.
With this setup, yes it has immediate heat spike but it recovers in seconds VS minutes.
I was just on the way to lunch, I am telling you I dripped from 140 IAT2 to 89 in 20-30 seconds of going 45mi/h, there is no way you can do that with Airaid or EPP

Don't get me wrong, I am not saying this is it, best thing on the block, but I was thinking of it and and why not try it, I tried it, I have results to prove it, I will keep thinking of this setup, who knows how it will evolve and change

 

[SM105K]

Pete,

If you have the ability move each filter away and down. See if you can get each filter into or near inner fender wells.

 

[yaycandy]

Pete,

If you have the ability move each filter away and down. See if you can get each filter into or near inner fender wells.

Eh honestly it will just slowly turn into the epp dual intake once you start adding longer pipes. Know what i mean? Hes trying to get it setup without pipes. Might as well just put the filters back up at headlight then.

I dont know how to word it but its all positive, this system works its just not optomized for where you need dead on accurate readings like for racing. It probably wont make a difference on a dyno but it would in actual driving with fresh air at it all the time.
I like it

 

[SuperPete]

Any lower point is hydro-locking concern, I am in PA and we have storms come trough like we had one few days ago when we get 3" of rain in 2 hours and water standing on the roads few" deep all across.
Any lower is a concern for daily driver, ever fender would be a scary business due to how low it is.
BUT this is a good visual to keep looking at it and keep thinking of better ways to make it work.

For the back turbo it's location is the optimal, it's safe, and you can't lower it anymore due to spacing between firewall and the engine.
Front can be moved around...

 

[6500rpm]

In all reality, air flow in any set up is probably dependent on the amount of air that can be pulled through the filter and the diameter of the pipe. I'm trying to wrap my head around it, say with an air line on a compressor you're going to have a bigger pressure drop in 100' line than a 25' line, but in our application we're looking at around a 3" tube that on the back side only is still less than 3' long. I'm not sure if the flow dynamics really come into play. I'd be more interested in the cross sectional total on the intercooler/CAC vs the diameter totals on the feed pipes. If there's a restriction, the CAC seems to be the most likely place. No clue on the total volume of the tubes in the OEM or GH cooler.

 

[SuperPete]

Good stuff, keep them coming.
Something to remember, two turbos working towards one end goal, two intakes comes in to one manifold, so if the front pulls little cooler and back filter little hotter it all mixing at the end.
Now, the front filter almost in front of the radiator fan, so that should be helping to get cooler air right at it, back one little more squeezed in there and higher than the front filter, but it's lowest it can go, any lower than that there is no room. I got it as short as possible.

 

[SuperPete]

Update, I am taking this intakes down today, anyone wants me to do some more testing before I rip them off?
I got one good 5 min drive catalog recorded just incase.
I will miss that sound

 

[FiveLeeter918]

Are you just testing cruise or wot Performance as well?

 

[SuperPete]

WOT also

 

[Knight]

Terry @ Burger Motorsports (popular tuner for turbocharged BMW I6 engines) put out some very compelling IAT data that supports the use of exposed cones in the engine bay.

The argument is that on a turbocharged car with a well-performing intercooler, the temperature of the air drawn in is not as relevant as the volume of it.

https://www.n54tech.com/forums/showthread.php?t=23993

I've dismissed these exposed cones for many years (and I stand by that on any N/A platform) but there are some interesting points with regard to intercooled FI engines, especially ones with upgraded cooling.

Hoping to see a dyno and some IAT logging on this.

 

[SM105K]

Terry @ Burger Motorsports (popular tuner for turbocharged BMW I6 engines) put out some very compelling IAT data that supports the use of exposed cones in the engine bay.

The argument is that on a turbocharged car with a well-performing intercooler, the temperature of the air drawn in is not as relevant as the volume of it.

https://www.n54tech.com/forums/showthread.php?t=23993

I've dismissed these exposed cones for many years (and I stand by that on any N/A platform) but there are some interesting points with regard to intercooled FI engines, especially ones with upgraded cooling.

Hoping to see a dyno and some IAT logging on this.

IC has a huge impact on IAT2's. The GH is a big upgrade. Looking through my logs my IC at full throttle drops to roughly 33 to 36 degrees above ambient regardless of what that ambient temp is.

 

[FiveLeeter918]

How are we looking now that it's June?