I realize it's all conjecture, but it's not rocket science to figure out why they left and never came back without posting the results. I did my homework, the tunnel ram comes with two 450 hollys and the Manifold can come with these specs: They mount either single or dual square-mount carbs and, depending on the application, have power bands that run from 2,500 rpm to as high as 9,000 rpm. In my experience when somebody says they will post the dyno results as soon as they are available, then drops off the face of the earth without ever posting usually means the results sucked (especially when you find videos of the car on the dyno). 1970CamARo (327) Discussion starter 7 Jul 8, 2004. If Vishnu gained 42whp from tune+meth, and FMU gained 30whp from tune+meth+stacks, you're either going to conclude FMU is the lamest tuners on the planet or their velocity stacks lost power - lost about 15whp of power. 30whp results with tune+meth means they lost power with the stacks. LSXHR 103mm rectangular port LS3 intake manifold has a set of tall removable velocity stacks, however medium and short stack options can be purchased. So now let's not bullshit ourselves and call each other liars about these results. The 42whp gain seems reasonable for tune+meth because S65 tunes typically add somewhere near 15whp-20whp (provided the tuner isn't manipulating the results). But the 2nd CAT delete has been dyno'd a few times separately and shown no real gains. There is the additional 2nd CAT delete in this chart. The following dyno chart shows a 42whp gain. Next look what happens when you add tune+meth. In this dyno, the meth injection added 28whp. This dyno chart shows NO TUNE, and is METH injection only. To understand what this means in perspective, here's a dyno chart showing a baseline + meth injection on an NA S65. We developed an alpha-n tune specifically for these stacks, and we found gains at or around the 30 whp mark. Just a quick question for you.if the dyno results were good and better than what they posted, then don't you think there'd be an update? Not sure how you thought I was flaming you.but whatever. BTW, the way I read the 5-20whp guestimate was based on a generation-1 design.so not exactly a guestimate from what I was thinking. Actual dyno results have been discussed somewhere at some time. Though the horsepower estimate doesn't seem much, it proves that your first post in this thread is horseshit and you have absolutely no clue what you're talking about. The first link has a guestimate from FMU with an estimated horsepower increase of 5-20 horsepower. So do your research before you flame or you'll just end up looking like an idiot. Your fourth link has absolutely no information at all besides a link. Your third link is completely heresay as there's absolutely no first hand information and only guesses. Your second link is a single post with a picture and a link. The links you posted were mostly garbage. Its 103mm throttle body opening can be port matched to 105mm.This isn't the first time these have been discussed.or the second.or the third.įirst of all i did search the forum and i did do my research. The intake manifold also features two nitrous nozzle bosses per runner for clean and easy direct port system installations. The compound fuel injector angle aims the spray pattern for ideal atomization, resulting in maximum power production and superior drivability.Ī reversible top allows for forward or firewall facing throttle body installations. The FAST LSXHR™ 103mm Intake Manifold is designed specifically with boosted applications in mind and is rated for up to 45psi of continuous pressure. Testing has shown an average 30-horsepower gain between 5000-7500 RPM over competitor tunnel ram intake manifolds. Its polymer construction is not only lightweight and high strength but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds. This allows interchanging of the various runner lengths so racers can experiment with finding which combination makes the most power in their application. FAST LSXHR™ 103mm LS3 Intake Manifold 146106įAST® has developed the industry's first polymer tunnel ram-style intake manifold, ideal for generating maximum power in boosted and naturally aspirated engines.Īvailable for rectangular port LS3 and raised port LS7 engines, the FAST LSXHR™ 103mm Intake Manifold ships with a set of "Tall" removable velocity stacks, however "medium" and "short" stack options can be purchased separately.
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