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Originally Posted by kane.s2k' date='Mar 13 2007, 12:32 PM
The factory runner lengths were never the problem with the factory manifold. It was always the plenum. However, the runner length was played around with as well to try and gain a bit more mid-range instead of having all top end. The powerband is what I intend to test next with the final phases of the prototype. The final product will not be factory and will use the runner lengths we find appropriate. Here is a picture of the inside:
It is engineered to work and work well. Period. Countless hours were spent on the design and it should be rock solid. The plenum had to be shaped by hand and there are other nice shiny pieces that go along with the intake manifold.
For the price range, it depends on what you want. There will PROBABLY be two versions. One will be a street version that is cast and one will be a race version which will be CNC and hand-made/molded and significantly more expensive. However for the prices, you can reference the hypertune intake manifold's pricing. I'll let the quality of the final product be the deciding factor for people. I'm pretty sure without a doubt it will be the highest quality mass production intake manifold you'll see. The cast manifold is intended for the budget minded individuals who want to have a lot of the performance and don't mind sacrificing the looks...if it is financially sound for the venture.
Nice in paper but does it works?
Can you produce a dyno with this modification?
The bottom line.
Looking pretty ain't gonna do any good, has to be sexy too.
Originally Posted by lotus7racer' date='Mar 19 2007, 02:04 PM
Nice in paper but does it works?
Can you produce a dyno with this modification?
The bottom line.
Looking pretty ain't gonna do any good, has to be sexy too.
Well, after the most stressful 3 days of my life, I finally came back home. The dyno showed 20whp gain at 7psi of boost. Got bumped from the 360's to the 380 range. There were issues with my car blowing a o-ring on the FPR so I didn't get the graph. That run stopped at 375ish with about 1000rpm to go so it would have been in the mid 380's. Previous dyno before the inlet manifold was 363whp.
These are real world numbers, not spewing out gibberish. With higher boost levels one should see even better gains.
BTW, knock voltage was almost at 0v the whole time. If we added about another .2* of timing we'd probably see it at 390whp and probably bring the knock to around .5V.
Cliffnotes: Prototype made 20whp at only 7psi. Could have probably made more power but a o-ring blew my guess is that it would be close to a 30whp gain if I had the chance to keep going. Higher psi'd guys would gain more. Very promising results.
WOW Now there are other options besides "turning up the boost" when looking for more power. With this IM and some new cams, 400rwhp will be the norm on 7 or 8 pounds. I can't imagine what my 15 pounds will feel like with this IM!!!
Now there are other options besides "turning up the boost" when looking for more power. With this IM and some new cams, 400rwhp will be the norm on 7 or 8 pounds. I can't imagine what my 15 pounds will feel like with this IM!!!