Intake questions

THE BULL

Hello there, I would like to hear about folks who have done modifications to their tubular intakes or OEM boxes.

I've been messing with VHR OEM boxes for some time and like many have found they flow really well. I've also seen folks obtaining great results from adding velocity stacks to their existing intakes and obtain positive results as well.

This train of thought came from months of research and observation.
A member of the VHR FB group posted a a year back data showing OEM boxes showing positive pressures at high RPM/High speeds and how replacing the seals on the ducts of the boxes created better data and some positive results.

I then took a look at the VHR Q50 and their boxes have a bigger filter and a more uniform rear part of the rear box and a huge opening fed from the front.

After seeing y'alls boy Admin pulling 350whp on stock Q50 boxes it made me curious as to their potential and limits.

I took a spare set of OEM boxes paired with some Drop in filters and enlarged the opening to accept a 3.8 feed that went by the grill. From a butt dyno perspective it felt great.
It pulled a lot more vs vehicles I had raced against.

After finding a set of Q50 boxes I took those and started modifying them. Some drop in filters for those and a custom front to the 3.8 tube and I have a bit more power and sound from OEM boxes.

In theory it makes sense, Huge volume box with a huge opening fed by the front tapered to the OEM tubes. Ideally a better setup would be to increase that back taper so it goes to a 2.7 or 3 inch rear tube into the TBs.

I suspect for tubulars a 3.5 -3.7 tube that would taper to 3 in could be fit, kept at 3.0 for easy MAF scaling would yield some nice results.

Open to ideas or suggestions. Thanks in advance

JARblue

Sounds like a lot of work to go number chasing such minimal gains. But innovation is a good thing. Sub'd for results

__________________

SteveVQ

We don't take kindly to Admin round here.

G/L with your research and gains

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‘19 Camaro SS 1SS 6MT
‘13 370Z Sport/Touring 6MT 328whp (Sold)
#LetsGoBrandon!

THE BULL

It's a lot of obsessiveness from my end and that not many folks go this route.

After many dyno runs, tuners opinions and personal experience I feel like there's something to it.

The Q50 is what provides most of the research since these members cant just throw some pipes behind the grill yet making over 330 is something common in their world like VHRs with many bolt ons except for airboxes.
Then I see tuned dyno runs of VHRs with CBE on stock paper filters hitting 314whp which could have been a bit close to the 320 with some drop ins.

Lastly if any of you is familiar with Eventuri, 90% of their intake designs for most vehicles are a huge box with a panel filter being fed by the biggest intake pipe they can fit after they've scanned the bay into a tapered housing of the right size. They make them in carbon to lower the probability of radiant heat affecting air temps.

THE BULL

A piece of data that would help me tremendously is for those folks with the ability to read their data like ECUTEK, UPREV, OBD scanner to document their MAF volumes during part and wide open throttle

Either Gallons per minute/sec or Liters per minute/sec either or.
This way I can compare with what I get on my end.

I like to think that my setup can surpass a 2.5 cold air setup but dont think a it will for a 3in