damn. Useful as in meaning peak HP/TQ or a specfic rpm point or ??? I have been trying to find info on this for a rotary but no success. It works with the calculations though.

What about expansion chambers, like 2 stroke.

 

If you can find a book tittled How To Modify Your RX7, your questions will be answered. The book is getting rare, and pricey.

 

Its 65$ at books a million. And you may have to wait up to 3 weeks to get it.

 

I've seen them listed on Amazon for 185, I think I paid 75 for mine. So much for a book that was 18.95 list.

 

that was cody, that was kinda ghetto. didnt like it at all. but hey to each their own

 

WOW WTF happened there. Initial D tax + F&F tax X eleventy. No wonder no one owns that book.

 

There are several of us that own 'The Book' One recently sold in the for sale section for 65 iirc.

 

Hmmm, interesting. If this is actually true, then why does RB actually make a true dual system for the FC as their top performance exhaust? This to me is still an undecided topic. I have read that the true dual works very well, but is almost worse than stock from other sources. The only reason RB doesn't make a true dual for the FB is the fact that there isn't room.

I am personally doing a true dual in the FC style. To do this I had to do a LOT of work to change out the gas tank for a 16 gal fuel cell. My original tank was rusted out anyway and its like finding a needle in a haystack around here to get a good original tank. I opted to just go with a fuel cell and it satisfies my other plans as well.