6.5l high flow upper.

[Trucker2k16]

Has anyone here used or installed the quadstar high flow upper plenum? I hear alot of good things about it just lookimg for opinions on it. Any differences using it? Does it change sound,boost,turbo?

 

[Twisted Steel Performance]

I have not had one in my hands, i have the peninsular upper available, it can be pointed left or right if someone uses a intercooler and it comes with gasket and stainless steel bolts.

 

[Quadstar Tuning LLC]

We designed it out of necessity when noticing in pressure ratio logs that we clearly had a restriction in the intake somewhere. The instant benefit is lower IAT lower boost MAP vs drive pressure because you aren't trying to move air through a restricted area. For example, if you have an HX35 on and cruise 65MPH with 5psi sustained; that number will instantly drop to ~3.5 PSI and air temps will drop accordingly. It's a pretty simplistic overall concept that changes the whole look under the hood also! And it can come with all the provisions for the DS pump sensors for a full bolt-on job.

The only challenge during install is that you may need to loosen your turbo flange bolts since there's a lot of play in the T3 flange depending on turbo and bolts used. If you have a stock turbo still, no worries here.

Available through your supporting vendor on here - Leroy Diesel.

 

[Potluckslammy]

Just to make sure my train of though is correct, if one chose to initially utilize the DS4 pump, one would order the intake with provisions for said pump. But, if at a later date one should convert over to a DB2 pump, provisions for the DS could simply be blocked off. Correct?

 

[Will L.]

Just leave the sensor(s) there unplugged. My intake is for a ds4 van/hummer and I don’t use the sensor. So yes they are effectively plugs. Hurts nothing.

 

[Husker6.5]

Might hurt the sensor's feelings that it's now only being used as a plug, @Will L. !

 

[jrsavoie]

Might hurt the sensor's feelings that it's now only being used as a plug, @Will L. !

You never know. It might identify as a plug.

You just can't tell things by the way they look anymore

 

[jrsavoie]

I have not had one in my hands, i have the peninsular upper available, it can be pointed left or right if someone uses a intercooler and it comes with gasket and stainless steel bolts.

Do you have a link to that?

Here's Quadstar's https://quadstartuning.com/products/high-flow-intake-plenums

 

[Twisted Steel Performance]

I don't have it listed on the site yet, I'm working on adding parts now, I will attempt to have it on the site this weekend and I will post you a link..

 

[Potluckslammy]

Just leave the sensor(s) there unplugged...they are effectively plugs. Hurts nothing.

WTF?! That's just a half-assed way of doing things! And my daddy always told me; "Son, don't ever half-ass anything! Only full-ass one thing at a time!" Pssht...pretty mediocre, Will!

 

[Will L.]

I thought about drilling, tapping, plugging. But if I dont keep this intake and go back to the normal one- the next owner has a problem. I knew from before I put on the gm6 center mount, I would want a real turbo before long...