Custom 3" Intakes on VQ35HR project....
As stated above, the gains are there, but are ultimately negligible. The only testing I did not get to perform was long-term cruising temperature comparisons. I feel the results would be fairly similar - lower by 1-2 degrees. Since 10 degrees lower roughly equals 1% horsepower higher, you're looking at an increase in the realm of 0.2% horsepower at most. For a car putting out 250whp, that's 0.5whp or less.
So if you're considering installing a duct of this type, your reasons should be primarily aesthetic, as the performance gains from this mod are present, but negligible.
So if you're considering installing a duct of this type, your reasons should be primarily aesthetic, as the performance gains from this mod are present, but negligible.
So custom diameter maf tube?
Interested in the results.
What did you finally decide on getting done? You have gone through so many possibilities...did you keep that vortech?
Interested in the results.
What did you finally decide on getting done? You have gone through so many possibilities...did you keep that vortech?
Thread Starter
Joined: May 2011
Posts: 8,075
Likes: 92
From: Burlington, NC
More so dyno results. Will probably do a baseline, on the day of testing, with the stillen intakes and current tune, then install the 3" intakes, and do another baseline, then let Bobby start working his magic and see where it takes me.
Thread Starter
Joined: May 2011
Posts: 8,075
Likes: 92
From: Burlington, NC
all i have to wait on is cin to make the intake pipes and then i'm driving up there.. so who knows... maybe a couple-few weeks? if nothing else comes up that is
The hr's use the the same connector as the 2k9 maxima. There's premade harness for the de tb to maxima so I guess you'd just need the inverse of it. Female your clip male de clip. And hope the bolt holes line up.
http://www.treadstoneperformance.com...89&cat_key=467
Thread Starter
Joined: May 2011
Posts: 8,075
Likes: 92
From: Burlington, NC
Scheduled appointment on Saturday to get the intakes installed and then get re-tuned.
Going to start by doing another baseline run with the current setup/tune, then install the intakes, and see where it goes. I want to re baseline because i now have the 3.9 final drive. and last time i dyno'd with the 4.08 gears (at the time was making 292whp, 264tq), the car's numbers were down to around 285/259. Bobby said every car that has a shorter gear in it, for some reason, just drops power on the dyno.
The car hit 303whp and 272tq with the 3.5 final drive in.
So basically if my baseline is 290 (where as I hit 303 with the 3.5 fd) and i gain 10whp with the intakes and retune, then i can assume 313ish whp with the 3.5 fd, no?
Going to start by doing another baseline run with the current setup/tune, then install the intakes, and see where it goes. I want to re baseline because i now have the 3.9 final drive. and last time i dyno'd with the 4.08 gears (at the time was making 292whp, 264tq), the car's numbers were down to around 285/259. Bobby said every car that has a shorter gear in it, for some reason, just drops power on the dyno.
The car hit 303whp and 272tq with the 3.5 final drive in.
So basically if my baseline is 290 (where as I hit 303 with the 3.5 fd) and i gain 10whp with the intakes and retune, then i can assume 313ish whp with the 3.5 fd, no?
Last edited by Bmurray350z; Mar 23, 2014 at 05:47 PM.
Thread Starter
Joined: May 2011
Posts: 8,075
Likes: 92
From: Burlington, NC
Also -
I'm debating if I want to do intake ducts now..... I found these ducts on ebay. They're similar to the Titek ducts but like $300 cheaper lol.... they're also for the 370z, but i'm sure they would work??
I'm debating if I want to do intake ducts now..... I found these ducts on ebay. They're similar to the Titek ducts but like $300 cheaper lol.... they're also for the 370z, but i'm sure they would work??
I think you're going to be surprised by how much you gain by opening up the MAFs. I truly feel that's been the difference maker for why I'm hitting my numbers for a 5AT DE.