Dumb questions... :)

[Hesh724]

A. can i avoid using an safc if i have a maf hack and an ecu chipped for diffrent injectors say 560-780? and i would def swap for a 2g maf at that time as well.
B. i have a dmschips ecu with a chip set for higher compression and it says +30% fuel map to compensate and says has fuel cut turned off does that mean i can set my boost any higher than 15 since i guess it is upping the duty cycle? Is any of this correct or am i as confused as a partical physicist?
C. sorry last one if i use a 2g maf and get the proper harness adapter will i have to use a maf hack/translator?

 

[rock1t]

I was told that a 2G MAF, 550's, crushed 1G BOV and a walbro 190 will run well without a tune, will allow the boost to be turned up. But, you still run a risk of damage by leaning it out with too much boost.

A guy I met at the shootout was running this setup with 18lbs boost. He has yet to have an issue.

Not saying this is the way to go, but this guy has been running it for over a year without issue.

alright. let's get this straight.

tired of people not understanding their fuel system. grr.


your ecu sends pulses to your injectors based on a variety of factors. stock injectors are 450's. you ecu knows 450cc and only 450cc. you upgrade your injectors to 550cc's. now your ecu doesn't know that it has bigger injectors in it. so the pulse is still the same, which means, you are dumping in a lot more fuel, than you really need to be, which means you will be running rich.

you have to have a way to control your injector puslewidth, even if it means going with a safc which will actually shorten the pulse so you get the correct afr (if you have a wideband).

and to the person who suggested megasquirt. that would be awesome, if we didn't have any other options available. cough. dsmlink. they are the same price, and dsmlink comes with preprogrammed maps, unlike megasquirt.