Did that get your attention?

A bunch of people wrote to me that they're not willing to purchase the JR filter until they see some numbers. Thanks to R&D Dyno and Darren (owner), I have what you've been waiting for:

These numbers are all adjusted HP to temp/pressure variance, and here's the first set of average/mean HP and torque figures:

Stock filter with HKS exhaust: 121.3HP, 117.4LB of torque
JR filter with HKS exhaust: 127.3HP, 118.9LB of torque

The above numbers are derived from taking all the sampled RPM (2000-9000RPMs) range and divided by the sample sizes. It gives a good indication of how the filters performed on the average.

Below is the dynochart:




Sorry, it's not as clear as I hoped. Anyway, the numbers reflected that the JR filter consistantly gained 1-2HPs and 1-2LBs of torque, and from 3000 to VTEC is where it gained the most. Please also note that on the second chart, I included the adjusted HP/torque of my car before the JR filter and HKS exhaust: 4HP and 2LBs of torque gained.

Lastly, the stock filter I used had less than 3000 miles on it, and it was very clean.

My biased opinion:
Now I don't know about you, but a complete drop in filter with a consistent 1-2HP and 1-2lbs of gains for only $64 is pretty good. No cutting, no modification to the airbox is required. And it pays for itself after a few oil changes since it never needs to be thrown away.

My unbiased opinion:
Honda did a hell of a job with our car (the old agreement from everyone back in the HA days), and tweaking out that little extra HP here and there is not easy.

I'm getting Sports Compact Car to do a special two pager on my car with the Spoon TB, Apexi VAFC, the exhaust, and the JR filter pretty soon.

I hope that little analysis was satisfying.

 

Thanks, Mingster - nicely done!

 

anytime bro, anytime.

I would actually be really interested in testing out MG's new filter (Giampiero, I'll buy one from ya) and test out the CAIs (Injen, MG, and if Comptech can get it together, Comptech). Last year I wrote about the conversation I had with Darren of R&D Dyno services. He commented on a couple of things: first the Honda's design on the S2000 was quote/unquote "really good stock parts". Then we went on to discuss the intake and designs: There's one drawback on our intake, and that's our flex rubber tube into the TB. the ribbed design may cause unnecessary turbulence in the flow, and disrupt the maximum efficiency. Also, if we were to do a traditional CAI based on mandrel bent AL tubing, the length of the piping must be adjusted for the result you want. It doesn't mean the longer or shorter the piping the better, but there is a point where the maximum efficiency is reached for your particular application. The best example would be AEM whom I saw working on their CAI last year on the dyno: They had a pre-arranged set of lengths of piping, and they just tested which ones had better response low end or high end. I hope Giampiero took time to do a lot of dyno testing on various length of the piping before introducing his CAI, otherwise it's not going to make a heck of a lot of difference.

 

hey ming,
you wouldn't happen to have a dyno run of the JR filters vs K&N?

 

sorry, no. K&N doesn't have a direct fit filter, and i loathe the thought of cutting and duct taping my filter up. just my opinion.

 

BTW, i wouldn't mind it if y'all called me Richard we have a gentleman with the first name of Ming, and I don't want us to get mixed up.

 

I have to ask here 'cause I don't have the rule book for SCCA-

would this filter be legal in A-Stock? And for that matter, would anyone mind summarizing what else can be done yet still be in A-Stock? All I know about is the wheels/tires thing. Thanks in advance!

-Vic

 

Your name wouldnt happen to be Dick would it?

 

Thanks Richard. The filters are of high quality and better design than the stock filter. It's good to see that the filter provides a small performance increase, on average.

 

Cool Richard, thanks for the detailed analysis. Good to see a slight gain... and it looks like with both your car was just at 200 hp at the wheels. Nice.

As for the A-Stock legal mods, just check my signature. Only things I haven't done that is allowed is spark plugs are open, and wires... but we don't have spark plug wires. Different plugs only last longer, no performance gain so I just left it alone. So check the sig, and if you have any questions fire away....