MarineMike

What Intake is better for Boost? Stock Intake Manifold or MSD? I know the FAST wouldn't be good from recent reviews, but haven't heard much about MSD and boosted applications.

Patriot Six

I went through this same debate. Ported MSD will likely pick up some power at slightly lower boost, but not worth the cost. Stock works fine unless you're 1000+ rwhp. Semper Fi

0Anthony @ LGMotorsports

I would say it depends on the combo, how much boost, and how much power you wanted to make.

For most cars running 6-10 psi of boost I don't think an intake is going to be that big of a deal as far as power level is concerned. I would say something like a FAST intake would help pick up some torque when the car is not in boost, but again not that big of a deal.

We id back to back on a D1 blown LS7 with a cam running 14-15 psi of boost between stock and a Holley high rise intake and it lost HP and TQ below 5000 RPM but picked up 50 hp by 7000 RPM. I'll try and see if I can find the graphs comparing them.

If you are making a lot of boost, 25 psi +, something like a sheet metal intake is going to help so the plastic doesn't blow apart.

0Anthony @ LGMotorsports

Sorry it's by mph not RPM...lost tach pick up on the run but around 7000 rpm you can see almost a 60 rwhp difference with no changes other than the Holley high rise intake vs stock LS7...but a lot of loss through the RPM range.


This is the car for ref. https://www.corvetteforum.com/forums...torsports.html

Unreal

Stock. I have no issue making well over 1000 on stock intake.

MSD you may make same at 1-2psi, but either way the power adder, fuel, or motor will limit the power.

KM177122

Agreed. Run the stock one unless you require a sheet metal intake for high boost.