I just had myGSR dynoed at tripoint eng. I tested the Mugen EK9 intake against the Real Time Racing NSX Airbox mod w.apexi filter.

I got the Mugen to see what all the hoopla was about. At first inspection, using my reliable senses as a dyno it seems to have more torque than the NSX airbox in the early rpms. but doesnt sound as loud as the NSX at Vtec.

So we dynoed the Mugen first cause it is a pain in the *** to install and fit it in. I figure it would be easier to take out than put in.


The guy did two pulls per airbox. So total 6 pulls for 100 bucks wasnt so bad. TI had a deal with Jeffatproparts for 3 pulls at 85. (Proparts is owned and operated by tripoint eng.)

We started with the Mugen then NSX airbox and finally Spoon filter w/ stock GSR airbox

Mugen wasnt bad but the NSX airbox kept right up with it in HP. Torque is a different story. low torque the mugen does well. Mid range the NSX airbox does better and then the NSX airbox still does better but only by a little at the higher rpms for torque.

Spoon is just a joke.

here are the results.

Legend



Torque


Horsepower


so who is the winner? I woul dhave to say NSXairbox takes it due to the fact that it is more readily available and cheaper ( I paid 100 bucks for mine) plus another 239 for a new cover and apexi filter mod)

All I had to worry about was my top radiator hose and my coolant bottle.

Mugen ws a pain in the ***. i even had to remove a tranny mount and rubber shock. jsut to make it fit. and leave those parts out.
NSX is less headache and easier to do. I guess those guys at Real time racing did their homework.

enjoy!!!

 

good write up! now go get the comtech Ice box and do the MUGEN, NSX and Comptech

thanks for the info though

 

<---- wonders if the "kink" in the intake tube made any performance differences.

 

One thing that dyno couldnt simulate is the effect of moving air being forced into the airbox on DIY air duct and Mugen intake. Would be a lot harder to test the difference though. Until I earn my first 1 million i am sticking to the DIY hose

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dave_B &raquo;</TD></TR><TR><TD CLASS="quote">&lt;---- wonders if the "kink" in the intake tube made any performance differences.</TD></TR></TABLE>

and on top of that another user said that the DC2 Mugen is bigger....

 

Oh yeah i was a bit disappointed in the results. 139.6 hp and 101.9 ft/lb torque at 5499 rpms.

My 98 civic EX w/ stock SOHC Vtec only had good oil, sparkplug wires and an AEM V2 CAI and it was getting 119 at the wheels which is much better than stock. Stock on paper says 126 at the fly.

 

Flywheel HP figure is pretty poor, shouldnt a GSR be pulling up near 170bhp???

I'd say if you had the mugen box fitted correctly it may give slightly better gains. I was lloking at the pics in the other thread and if you had a gap between the filter and neck that attaches to the intake pipe then the airbox isnt going to work as designed.

 

well we used those carpet fans

oh yeah i forgot to show you guys the lovely eyecandy at tripoint. (they do all the work on my dads FD so when they realized i was his son then they opened up and became more friendly.)


anyway here is what they got lying around



And now they are working on making a supercharger for the lotus elise




oh yeah that blue Mazda three on the left of the garage picture is a dealers car. it is turboed and puts out 210 at teh wheels!!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mugenracer &raquo;</TD></TR><TR><TD CLASS="quote">Flywheel HP figure is pretty poor, shouldnt a GSR be pulling up near 170bhp???

I'd say if you had the mugen box fitted correctly it may give slightly better gains. I was lloking at the pics in the other thread and if you had a gap between the filter and neck that attaches to the intake pipe then the airbox isnt going to work as designed.</TD></TR></TABLE>

I dont think that would have made that much of a difference. But yeah Im disheartened
by my results. but maybe it just the age. this is a 1994 GSR with over 210k miles on it.

 

Thats nice cars. I brought the wind speed issue up since Spoon and Mugen air ducts on S2000s can actually generate positive manifold pressure at about 70mph. Sort of like a very efficient ram air intake if you will.

 

You should tell your dad to buy my supa-baller JDM Carbon Kevlar Recaro seat (insert shameless plug)

https://honda-tech.com/zerothread?id=1657650

 

I think those are a bit different then ours. I think my modded headlight and nsx box woudl more closely resemble that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kengs &raquo;</TD></TR><TR><TD CLASS="quote">You should tell your dad to buy my supa-baller JDM Carbon Kevlar Recaro seat (insert shameless plug)

https://honda-tech.com/zerothread?id=1657650

</TD></TR></TABLE>

haha awesome!!! those are badassed seats. I know he should but He isnt gonna want to spend anywhere near 1000 let alone 1400. He likes the stock R1 seats but they are wearing down a bit. it is a 93 afterall.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mugenracer &raquo;</TD></TR><TR><TD CLASS="quote">Flywheel HP figure is pretty poor, shouldnt a GSR be pulling up near 170bhp???

I'd say if you had the mugen box fitted correctly it may give slightly better gains. I was lloking at the pics in the other thread and if you had a gap between the filter and neck that attaches to the intake pipe then the airbox isnt going to work as designed.</TD></TR></TABLE>


you know what though? the guuy didnt really know hwo to set up the dyno to begin with. he was entering the 4th gear ratio. but I think it was supposed to be the final drive ration or something. so im more interested in how the airboxes compare. also he said 139 was at teh wheels not fly.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Solscud007 &raquo;</TD></TR><TR><TD CLASS="quote">


you know what though? the guuy didnt really know hwo to set up the dyno to begin with. he was entering the 4th gear ratio. but I think it was supposed to be the final drive ration or something. so im more interested in how the airboxes compare. also he said 139 was at teh wheels not fly. </TD></TR></TABLE>



That doesn't sound like a good comparison/accurate then. Not saying your results aren't on par with each other, but...

 

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

That doesn't sound like a good comparison/accurate then. Not saying your results aren't on par with each other, but... </TD></TR></TABLE>


I know there are some things to take into consideration. but any flaws I think are straight across the board. my NSX airbox is using a piece of plastic tubing to connect to my intake tube and its not the greatest connection ever. same with the mugen. but i dont think there are that many gaps.

its not like I was doing a dna test and sneezed or bled onto the samples thereby contaminating and ruining any results.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITRacer121 &raquo;</TD></TR><TR><TD CLASS="quote">good write up! now go get the comtech Ice box and do the MUGEN, NSX and Comptech

thanks for the info though</TD></TR></TABLE>

I have yet to try the comptech. but based off this picture. I dont have my hopes up

comptech icebox ITR switching to Mugen
https://honda-tech.com/zerothread?id=376228

 

i think the bended intake arm cost u some hp for the mugen intake.

Because the Velocity stack is suppose to propagate a wave pattern once the air are being suck pass through the velocity stack.

Your bended intake arm might mess up the wave pattern.

could u possibly custom a aluminum intake are to replace ur bended arm? maybe get some cheap CAI or on ebay and cut it up and have a custom made arm, so that there will no bends.

 

Should that Ratio figure on the dyno pictures not be 4.4 for a stock GSR tranny? Having it set at 4.597 would throw the figures out quite bit (i'm assuming its supposed to be the FD ratio???)

 

That kindof sucks

Any gap is gonna make a huge difference to how it performs

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mugenracer &raquo;</TD></TR><TR><TD CLASS="quote">Should that Ratio figure on the dyno pictures not be 4.4 for a stock GSR tranny? Having it set at 4.597 would throw the figures out quite bit (i'm assuming its supposed to be the FD ratio???)</TD></TR></TABLE>

These are the reasons I feel this one is null and void. That and the intake tube is bent up and not allowing proper flow.

 

i also think the kinked tube skewed things up, when i did my intake comparo the mugen ek9 intake was the clear winner against the hks mega flow and stock itr box, all using the itr intake tube

light blue = mugen
green= hks
dark blue = stock itr box

 

Pix if the NSX

 

Yea, I wanna see pics of the NSX box, and where can I read out that mod ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AlwayzSpoolin &raquo;</TD></TR><TR><TD CLASS="quote">Yea, I wanna see pics of the NSX box, and where can I read out that mod ? </TD></TR></TABLE>


go here

https://honda-tech.com/zerothread/1722191