Official Richard Holdener who wants to buy an intake manifold list

[tk-421]

Originally Posted by richardholdener

Not to sound like I'm trying to sell the intake, but I don't understand this line of reasoning. Check out the graphs supplied on the intake manifold post and you will see that this design offered gains at 2500 rpm, 3500 rpm, 4000-6000 rpm. Since it never made any less power than the stock manifold, I don't understand why someone wouldn't be interested in having these gains. If it is a money issue-I fully understand, but since gains came as low as 2500 rpm, that is pretty usable. Even the extra torque at 3500 rpm and 4000 rpm (6-8 lbs ft.) are usable in every day driving.

I believe WolfWings was referring to the fact that the "midrange manifold" prototype showed higher low- and mid-range gains than the latest model. Judging from the above dyno graph, I'm thinking the gains at 2500RPM and 3500RPM should be barely noticeable under normal driving conditions, and that the really juicy stuff should kick in at 4K+ RPM, which is a territory that a lot of "point A to point B" folks don't usually tread under.

Again, I still consider this a worthwhile purchase, but I think more gains at the low- and mid-range would've been even better for people that spend most of their time in the street (i.e. between red lights, traffic, etc).

[WolfWings]

Originally Posted by tk-421

I believe WolfWings was referring to the fact that the "midrange manifold" prototype showed higher low- and mid-range gains than the latest model. Judging from the above dyno graph, I'm thinking the gains at 2500RPM and 3500RPM should be barely noticeable under normal driving conditions, and that the really juicy stuff should kick in at 4K+ RPM, which is a territory that a lot of "point A to point B" folks don't usually tread under.

Bingo. My car's a DD that sees use at autocross, and my biggest wish is more grunt around the 2500-4000rpm range, since it's either stay in 2nd and go way up and down the RPM scale from 2000-redline as I go through the course, or bash my poor transmission to cinders slamming in and out of 1st gear ten or more times in a single 45-second run as I go in and out of corners. Even with my decent rev-matching, it's rough on the transmission.

Originally Posted by tk-421

Again, I still consider this a worthwhile purchase, but I think more gains at the low- and mid-range would've been even better for people that spend most of their time in the street (i.e. between red lights, traffic, etc).

Oh, I make no bones about complimenting this intake, it's wonderful looking for those that can hit open track day or for playing around on the highway where you can really unwind the decent legs on this motor. But for my particular performance-improvement goals (avoiding downshifting to 1st gear to deal with sub-25mph corners) it doesn't look like it would help that much compared to what I remember of the mid-range graph that had everything shoved about 500rpm to the left for HP, so torque was a notch higher down across the full low-range. Or was that some other dyno graph unrelated to any of these intakes?

[richardholdener]

If we got enough owners to step up to the mid-range version (I will post power grpahs tonight), the I could do a production run of those as well and you guys could choose. This could only be realistic if we got another list filled for those wanting mid-range version. Let me know what you guys think.

Originally Posted by WolfWings

Bingo. My car's a DD that sees use at autocross, and my biggest wish is more grunt around the 2500-4000rpm range, since it's either stay in 2nd and go way up and down the RPM scale from 2000-redline as I go through the course, or bash my poor transmission to cinders slamming in and out of 1st gear ten or more times in a single 45-second run as I go in and out of corners. Even with my decent rev-matching, it's rough on the transmission.



Oh, I make no bones about complimenting this intake, it's wonderful looking for those that can hit open track day or for playing around on the highway where you can really unwind the decent legs on this motor. But for my particular performance-improvement goals (avoiding downshifting to 1st gear to deal with sub-25mph corners) it doesn't look like it would help that much compared to what I remember of the mid-range graph that had everything shoved about 500rpm to the left for HP, so torque was a notch higher down across the full low-range. Or was that some other dyno graph unrelated to any of these intakes?

[tk-421]

Originally Posted by richardholdener

If we got enough owners to step up to the mid-range version (I will post power grpahs tonight), the I could do a production run of those as well and you guys could choose. This could only be realistic if we got another list filled for those wanting mid-range version. Let me know what you guys think.

That would be great!

[justjesus]

Originally Posted by tk-421

That would be great!
Do you still have graphs available for the mid-range mani by any chance?

Im guessing he does :) as he said, "I will post power <graphs> tonight"
YAYY

[tk-421]

Originally Posted by justjesus

Im guessing he does :) as he said, "I will post power <graphs> tonight"
YAYY

oops! guess i missed that part