I did a search and was looking to see if anyone has personally seen a gain with using a j's or passwordjdm intake. I am planning to in the near future (a month or so) dyno my new build with the passwordjdm c.f. intake then with the aem 3'' cold air from an ITR to see the difference but was looking to see if anyone had info. Thanks

 

https://honda-tech.com/zerothread?id=1194241

https://honda-tech.com/zero...81300

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">https://honda-tech.com/zerothread?id=1194241

https://honda-tech.com/zero...81300</TD></TR></TABLE>

LOL you beat me to it...

 

thanks tou guys....guess i know what to keep

 

Make sure you have the ITR version.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">Make sure you have the ITR version.</TD></TR></TABLE>

i got the hybrid one for the EG... good shiet!

 

do they make an itr version tht will work with on an EF with a rear mounted battery?

 

I noticed in one of those links there was a velocity stack. Where can you get one of them from?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">https://honda-tech.com/zerothread?id=1194241

https://honda-tech.com/zero...81300</TD></TR></TABLE>
Did they have fan blowing air at it,At 70 mph?I don't think so .So how can you dyno test an intake when the car is sitting still?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMF &raquo;</TD></TR><TR><TD CLASS="quote">Did they have fan blowing air at it,At 70 mph?I don't think so .So how can you dyno test an intake when the car is sitting still?</TD></TR></TABLE>

I don't really understand how this works. The intake is in the engine bay, and blocked off from high pressures. How does having the car moving make much of a difference vs. not having the car moving? I'm probably missing something here, but I'm not seeing what difference it would make.

Additionally, the design that J's is going for doesn't seem like something that would work. It seems like they're going for the nozzle effect, where intake air would speed up right before entering the TB. However, the air has slowed down so much due to the fat portion of the intake that it kinda nixes the whole thing. It seems like you'd have to be revving pretty high for the intake to have any advantage.

....of course this is all speculation, I'm just guessing at why it's not the best choice of intake out there.

 

A moving car removes A LOT of engine heat. And the fat part of the intake does not slow down the air. Its the same size as the inlet, it doesn't start at a size, expand into the fat portion, then down to the tb. The entire intake is a gradual transition to the tb.

In reality, I have seen many intakes have many different results on different motors. I mean, look in one of the threads linked to above. There is someone that had their J's beat their ITR CAI.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">A moving car removes A LOT of engine heat. And the fat part of the intake does not slow down the air. Its the same size as the inlet, it doesn't start at a size, expand into the fat portion, then down to the tb. The entire intake is a gradual transition to the tb.

In reality, I have seen many intakes have many different results on different motors. I mean, look in one of the threads linked to above. There is someone that had their J's beat their ITR CAI.</TD></TR></TABLE>

Hmm, I see. I suppose if having the car moving reduces temperature quite a bit, that'd lessen the advantage that the CAI has. I also thought the intake had a small inlet then got fatter, then skinnier again. Thanks for clearing that up

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alfaaay &raquo;</TD></TR><TR><TD CLASS="quote">
Additionally, the design that J's is going for doesn't seem like something that would work. It seems like they're going for the nozzle effect, where intake air would speed up right before entering the TB. However, the air has slowed down so much due to the fat portion of the intake that it kinda nixes the whole thing. It seems like you'd have to be revving pretty high for the intake to have any advantage.

....of course this is all speculation, I'm just guessing at why it's not the best choice of intake out there.</TD></TR></TABLE>

J's Racing actually copied the design from Top Fuel, who copied it from H Tamitaka. The fat part of the intake is, in theory, supposed to allow quicker throttle response by having the throttle body get air that's already in the chamber. Remember that every motor is different, and will react different.
For some, the throttle response from the J's, as compared to the AEM, is enough to warrant a loss of hp, for others, it's not. Just like there is no perfect cam for every motor, there's no perfect intake either. It's give and take.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RMF &raquo;</TD></TR><TR><TD CLASS="quote">
Did they have fan blowing air at it,At 70 mph?I don't think so .So how can you dyno test an intake when the car is sitting still?</TD></TR></TABLE>
WTF

 

**** it. sounds like you should buy whatever one looks better. im getting the password.

too close to call

 

I believe the only person that saw gains on a j's style intake was equipped with an h22.