I have had the BP velocity stack in my hands for a couple of days now and I finally got an opportunity to do a little test. Thomas (a friend I work with) was doing a little tuning on his car and allowed me to test these two intakes on his car. The car has a stock bottom end with a mild ported head, some Jun cams and a Hytech header. Tuned on a brand new Hondata S300 . With his intake the car made 240 Dynapack HP. We pulled his filter and installed the BP V-Stack on the end of his intake and made two passes. Then we installed the Prototype V-stack and made two more passes. The graph below is the best pass on each. No additional tuning was performed, and the A/F was almost perfect for both intakes. The graph speaks for itself, the BP stack bumped up the peak HP and torque nicely, without sacrificing anywhere. The Prototype stack also did very well, but the BP stack looks like the winner of this little test.



Modified by b19coupe at 7:30 PM 5/25/2006

 

where is this bp stack sold through?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by strsi &raquo;</TD></TR><TR><TD CLASS="quote">
where is this bp stack sold through?</TD></TR></TABLE>

 

what about both compared to the filter

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by strsi &raquo;</TD></TR><TR><TD CLASS="quote">
where is this bp stack sold through?</TD></TR></TABLE>
https://honda-tech.com/zerothread?id=1624439
https://honda-tech.com/zerouser...49466
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JCushing &raquo;</TD></TR><TR><TD CLASS="quote">what about both compared to the filter</TD></TR></TABLE>
I did not print out that plot, but next time I am at work, I will.

 

Good to see Bryan's design working well.

Bryan, I'm impressed.

 

very nice

 

Splitting hairs, but the BPi does have a slight edge. Good to know the work I did paid off with some tangible results.

Thank you Todd for your time in performing this testing.

 

Hello Bryan:

Do you have these available for sale? Email me (mpg5308@yahoo.com) with details when you have a chance. I would like to put one of these on a slightly modified H22 we have here in Puerto Rico.

Regards,
Mark Perez
Import Performance

 

you always do seem to come up with these dyno comparisons.....Thanks agian for your time in doing it!!!

Ed

 

Good job Brad!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">
I did not print out that plot, but next time I am at work, I will.</TD></TR></TABLE>

Please do, I'm very interested to see the results with the filter on. Thanks for the dyno comparison Todd.

 

Hey, I'm a lurker on here..
Do you happen to have the a/f graphs for those dynos?

 

I'd really like to get a velocity/flow stack along with a k&n filter to replace my passwordjdm power chamber whale *****, but I'm unsure as to where I can get an intake tube for the stack. Does anyone know where I can get one to make the stack worth while?

 

Tuned with intake vs same intake with the BP Flow Stack.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">
Tuned with intake vs same intake with the BP Flow Stack.</TD></TR></TABLE>

Sorry, but is the BP with filter or just intake tube?

 

Thanks for doing this comparison

 

Not that it matters, but the dyno was with JUN cams not Skunk cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hayabusa160 &raquo;</TD></TR><TR><TD CLASS="quote">very nice</TD></TR></TABLE>

 

This is a great comparison. That's solid work.

 

PM'ed you b19coupe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by precord96 &raquo;</TD></TR><TR><TD CLASS="quote">Not that it matters, but the dyno was with JUN cams not Skunk cams. </TD></TR></TABLE>

So it was your car being tested?

 

Yep, it was Thomas' car.
And he tuned it.

 

thanks to Todd for again sharing useful information with us all-motor heads

and props to Bryan for putting some thought and work into designing a great product.

this is on my list to buy when I get closer to the end of my current motor build. as in closer to having a running motor.

unless I go with individuals...

 

hMM hey todd, is the BP with filter or just intake tube?

 

No filter on either stack.