Originally Posted by Rawknees'Turbo
(Post 10662190)
Bernz, just to add a little to what IckyFicke and RawhideRey said about CIS (aka - Bosch K-Jetronic); pNutz is fond of the system because it is an old school (like his old ass!!!) injection system that performed well enough that it was on many European cars for decades (Porsche, Saab, Lamborghini, just to name a few, and hell, it was even on the snail slow Delorean with the Vulvo lawnmower engine). Also, that bisch pNutz has really studied the system over the past several years and is quite knowledgeable with regard to how it works, what the components are and do, and how to troubleshoot problems with it. Plus, Nutz is just weird like that!!! :D
CIS sux for several reasons, however. For one, it is entirely user untuneable in stock trim (except for idle AFR/CO level) - the only way for an owner to optimise the system is to have components re-engineered to be made adjustable. There are people that do this, but it is not cheap, and then learning to tune the system requires an onboard AFR meter and a lot of work and patience. Another suck is that even the slightest air leak anywhere in the intake tract (talking even a tiny, pNutz's d**k sized leak :eek:) means the engine will run like an old dog with chronic explosive, and dribbling, diarrhea, and then locating said leaks (often many all throughout the system) is a real chore. Related to that suck, the non-Turbo 911 variants utilize a complex airbox that is made of fookin plastic which splits wide open (aka - rendered useless) if there is an intake backfire (not uncommon during cold startup on the non-Turbo systems).
All of the aircooled Turbos ran CIS (except for the 993TT), so I am very familiar with the pain in the assery of it, and have gone to a lot of effort and $$$ to be able to properly tune the system (does not supply enough fuel during boost to support a better turbocharger than the weezy piece of shiit that the cars came with, runs borderline too lean at idle, and dumps too much fuel at boost onset). I've also become pretty good at troubleshooting it, unfortunately! I don't have actual hate for the system, but I have no love for it either, and definitely like poking fun at how long Porsche continued to use it on the Turbos.
And then you have Toby, who ditched his CIS for and even ruder and cruder fuel system - Caveman Carbs! :eek:
:D
|
