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-   -   Need a shop, I give up. (http://forums.pelicanparts.com/porsche-911-technical-forum/1031837-need-shop-i-give-up.html)

High Life 06-11-2019 05:39 PM

Quote:

Originally Posted by Rawknees'Turbo (Post 10488656)
You forgot number 4); CIS guys who have some weird, romantic reverence for a slow performing, not easily user adjusted (without WUR mods, and fuel head mods if after serious HP - dialing in idle AFRs doesn't count), band aid component laiden, dinosaur tech fuel delivery system that was more suited for a grocery getter than a sports car. Yer welcome! :)

Ugh.. you just summed up my last few weeks..

:(

juanbenae 06-11-2019 08:43 PM

Quote:

Originally Posted by HarryD (Post 10488437)
3) The guys that have spent a fortune on Webers will tell you they're great to justify their expenditure to themselves.


Haryyd, until you suck it n see your carb statement is baseless. Just ask all the guys that go from carbs back to CIS.. oh wait, that's right! That guy does not exist.

pmax 06-15-2019 09:50 AM

Cis
 
Quote:

Originally Posted by juanbenae (Post 10488845)
Haryyd, until you suck it n see your carb statement is baseless. Just ask all the guys that go from carbs back to CIS.. oh wait, that's right! That guy does not exist.


Porsche ditched carbs for CIS when the fuel injection system was developed by Bosch.

Prior to that, MFI was the preferred fuel delivery except for the bargain basement T. Why would Porsche do that when carbs are that good ?

ClickClickBoom 06-15-2019 10:18 AM

Quote:

Originally Posted by pmax (Post 10492776)
Porsche ditched carbs for CIS when the fuel injection system was developed by Bosch.

Prior to that, MFI was the preferred fuel delivery except for the bargain basement T. Why would Porsche do that when carbs are that good ?

There ya go applying logic to an illogical situation. I had CIS in my middie, after proper setup, it ran like a new car. You will need fuel pressure gauge set, a CO meter, and a basic understanding of the system. If you are chasing horsepower, this is not the system, if you just want a clean running, tractable car that will scoot up a twisty road, or get groceries, a well sorted CIS system will do the trick. Carburetors are solid 1930s tech.

HarryD 06-15-2019 10:42 AM

Quote:

Originally Posted by ClickClickBoom (Post 10492809)
There ya go applying logic to an illogical situation. I had CIS in my middie, after proper setup, it ran like a new car. You will need fuel pressure gauge set, a CO meter, and a basic understanding of the system. If you are chasing horsepower, this is not the system, if you just want a clean running, tractable car that will scoot up a twisty road, or get groceries, a well sorted CIS system will do the trick. Carburetors are solid 1930s tech.

Exactly. Also, FWIW, CIS is Mechanical Fuel Injection.

ClickClickBoom 06-15-2019 10:53 AM

One of my experiences:
http://forums.pelicanparts.com/porsche-911-technical-forum/548442-idle-bounce-hunting.html
http://forums.pelicanparts.com/porsche-911-technical-forum/494080-cis-question.html


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