I'm looking at a 95 powerstroke but its in california, im in ohio but i'll fly there. What are the difference between a federal emissions engine and a california emissions engine. I read it has a cat, a fuel pulse dampner, and a different computer. Are there any other things different between the two?

 

the only thing i know of is different injectors. i believe they were split shots versus single shots with the fed trucks. if they are split shots, they will ahve a different computer, or atleast different tuning on it. someone else will know more than me.

 

injectors are larger, computer is different for the split shots (mainly programming), pressure snubber on fuel pump, more power, bigger gains with a chip, well you see where i am going with this. the can make more power. when banks claims big pwoer gains for their power pack it was using a cali model. you couldn't get that added power from a fed model.

all the 94.5 to 97 had cats so thats a non issue.

 

Only 96 and 97 cali trucks had bigger split shot injectors for emissions. As far as I know the 94 and 95 are all had the same on emissons.

 

oh yeah your right I didn't catch that it was a 95. Itfox is correct everything I just said only applies to 96 and 97 trucks.

for earlier trucks I don't think there is any difference between fed and cali

 

Wow Tj, you just got showed up by the lieutenant!

 

hey I don't claim to be perfect! sometimes I am just plain wrong! This times I just didn't read the original post good enough.

 

TJ - What you say about the Cali trucks makes sense. I talked with Banks about this topic a month ago when I swapped my Stinger Plus chip for a Power Pack one. They told me they used a few Cali trucks and a few fed trucks and got pretty much the same power increases from each of them. I don't know if they were feeding me a line but that's what they told me. And the PP chip does seem a little peppier than the SP one, and I get a little more black smoke too. Do you think the fed injectors in my 96 can produce as much power as banks claims, with enough intake, turbo and exhaust?

 

No I don't think they will produce as much as a cali truck. the fed trucks have about 90cc injectors and the cali trucks have 120cc injectors. larger injectors mean more power. programming can't make up for mechanical limitation. if you look at banks ads for the 94.5 to 97 powerpacks they have a little disclaimer in there that they got these results on a 97 cali emissions truck. I don't know if all ads say that but I have seen a few of them.

 

why do the cali trucks have bigger injectors for emisions? wouldnt bigger injectors create more emisions with the more power they can have? idk just wondering, can someone explain?

 

while the injector are bigger they are also a plit shot design which means they have 2 injection events per stroke cycle. the first is a pilot shot (small amount of fuel) then the main shot. somehow this pilot shot makes for better emission if I under stand it correctly.