I rode in Greg's car with the prototypes and even then, his car pulls HARD. I still remember he used the phrase "like a V6", and it's true. The car has so much more torque.

I don't think anyone has put in the work and dedication to a single exhaust system EVER.

Very highly recommended.

 

Thanks Joey! I think you need to ride in it again, since I'm pretty sure you rode in my car very early in the project, before my mid-pipe was "conceived". It was basically just a conventional 3" pipe with a resonator and the "dingle" muffler.

 

Im thinking one of these + my ITB's would be awesome for mid range torque! Maybe ill buy one instead of a aftermarket header the may or may not give me the gains i want. Keep up the good work.

 

Will you be making these per request as the orders come, having group buys and having them made in batches, or full on mass production? Which ever way let me know how I and when go about getting one of these on my S, as I am really liking the midrange performance gains and even the gains its making up top. I'll take them anyway I can and your product looks really promising. Thumbs up to your ingenuity and perseverance that went in to creating a new product, or rather, improving upon a technology that I at least have never seen before. Not on a car at least, like someone mentioned prior in this thread, it somewhat resembles a dirtbike or Atv exhaust. Anyway, I'm looking forward to getting a gernpipe

 

I'm glad that you brought this up, but I have a theory about the combination of ITB's with my mid-pipe that might sound "negative" (at first). Since everyone complains that the S2000 NEEDS TORQUE, I believe that all of the ITB kits were designed to maximize torque in the same area that my mid-pipe "naturally reduces losses". My theory is that the combination of a typical ITB kit with my mid-pipe will make the overall setup so torque-rich, that it will FEEL weak in the high RPMs. I believe that this will mean that people with ITBs will need to try out shorter horns, so they can shift the gains from the ITB's higher in the RPM range.

While it might sound like I'm saying that my mid-pipe would somehow cause reductions in high RPM performance, I'm definitely NOT saying that. What I'm saying is that combining parts that all provide gains in the same RPM range will naturally make the engine feel week in the rest of the RPM range. I've noticed this to some extent with my mild build (PWJDM + GernPIpe). Since my mid-pipe creates gains in the same RPM range as the PWJDM, there's very little difference in torque between 3500 and 6500 RPMs. (No dyno plots in this thread include the PWJDM). My high RPM performance is great, but it doesn't compare to my mid-range performance. The result is that I am now wishing I had better power up top, and don't have any need for more mid-range torque. I don't think I've ever read any comments like that on this forum from NA S2000 owners...

 

My plan WAS to build 1 production unit, which I would test and demo for this thread and keep for myself. Then I was going to start a group buy for 10-20 units. If there was sufficient demand after that, I was going to produce more. However, the tinny / raspy noise that I encountered unexpectedly has stalled my plan for a group buy. Even though I've purchased over $5K in material already, I now have to resolve the rasp issue before starting the group buy. I believe I have already found the solution, but it requires a special megaphone, which won't be ready until the end of August (hopefully). I've ordered 20 of them.

Until I receive them, I will just spend my time testing different muffler designs, so I can offer something for people that want a "full system".

 

I totally understand what your explaining. 1st world problems lol. Anyway i mostly autocross so i wouldnt mind saying it feels too mid range. Also i plan on getting cams and things to help top end down the road, i think in this case its just the right parts for the right task at hand.

 

I'm loving it

 

Good news! I fixed the issue with the 2.5" muffler, and performed another controlled test of it against my 3" straight through Magnaflow. The torque curve and peak values were identical, so I believe I will move forward with the development of a 2.5" single to be an option with the mid-pipe. However, I don't think I will use the U-bend muffler, since it would be much more expensive to produce and is WAY too quiet. It would be great for a "sleeper", but I think most people will want to actually hear more from it.

 

After driving around for a while city gears 1-4 and highway 4-6.

The "rattle" I got going into 3 must have been a loose tip.

No drone, no rasp. I like the sound, and just need to dump my FIPK, as it is loud with the earlier VTEC engagement.

The Gernpipe's most noticeable feature is the improved torque. Gernpipe+Flashpro is a winner combo.