I haven't looked at their dyno plots, but I tested it myself. IIRC, it was the first prototype URGE made, and had it sent to me. He tried a few different prototypes from at least 2 fabricators, and the only one that showed gains was the "Unicorn".

 

Forgot to answer your question about Mugen and Spoon ... it is possible to make a header that performs better in some areas of the rev range, but they will almost always perform worse in other areas. I believe Mugen and Spoon just wanted to produce a header that made some gains with the stock tune (or their ECU's). However, if you plan to eliminate the OEM cat, or if you're lucky enough to get ahold of one of my mid-pipes, you really need a header that has a very broad / smooth torque curve with VTEC set at ~3600 RPMs, like the OEM header.

 

i read a lot, and JS RACING HEADER give gains in all areas...

 

If that's the case, why is there not an OEM replica that weighs less and why does everyone seem to think the hytech header gives gains all over (and plots show this)

 

Well that was easy. We can close this subforum now.

 

why ?????

 

why ?????
[/quote]

In the possible event you didn't catch on, that was sarcasm.