Well, I have read a little on the topic of CIS and since I decided to keep my current car (Only 26,566 Miles) for a while, I may mod it just for fun of experimentation.
I agree, the Cirtoen gearbox is a weak link.
BUT, I can get a Cryo treated unit which will give me an improvement in durability (i.e., resistance to wear and fatigue) around 100 percent. The typical increase in strength after cryo treatment is up to 50 percent.The deep cryogenic tempering process for gears is an inexpensive, one-time, permanent treatment, affecting the entire part, not just the surface. Gears may be new or used, sharp or dull, and reshaping will not destroy the treatment.The process has a number of obvious benefits, including increases in tensile strength, toughness, and stability through the release of internal stresses. The exceptional increase in wear resistivity, generally exceeding 200%. http://www.ds-vitesse.com/en.htmlTheoretically
, engine produces more power if it packs more air into cylinders and get more fuel. The air mass is a primary atribute, fuel volume is a secondary.
More air mass= colder air (chargecooler) or more of it (hybrid turbo, higher boost), or both.
Furthermore, to handle additional air flow when the metering plate bottoms out, auxiliary flow port(s) with spring flap(s) can be added to the OEM plate.
To tweak fuel map, stock fuel pressure regulator (in fuel distributor) could be replaced with raising rate external unit calibrated to the P of boost.
Edited by MrDangerUS, 14 November 2010 - 04:58 AM.