This is my first post here, so go easy on me. I am building a dedicated rock crawler with a Cummins 4BTA diesel in it. What is the best place to start on improving throttle response? I really don't want to swap turbos at this time...

 

Can't tell you much about your build up but just wanted to welcome ya to the site. I'm sure all the answers you need are here.

 

if its a VE pump and im assuming it is, go over to https://www.dieselbombers.com/1st-ge...-pump-you.html and look at my posts there, easiest way to get started on a VE pump, after all that you can do the 3200 Gov. Spring on it......

 

There are alot of people that knows way of getting more power out of the 4BTA at 4btswap.com. Try getting a turbo elbow. They have a set screw in them the tricks the waste gate into opening later. 3200 gov spring is also a good way to go. Turning up the fuel is something else that you can to. I can't think of the name for it right now, but on the top of the injection pump there is something that tells the pump how much boost there is there is a nut iniside there, tighten down it down, (acts light a blatter.) will make your pump think that there is more boost then there really is.

 

I Would Recommend Introducing Yourself In Diesel Bombers Initiation - Diesel Bombers

Welcome

 

that is the smoke screw your refering too and it does nothing but make smoke........max the fuel screw til you cant idle it down anymore and turn/grind your fuel pin or buy a new deeper one, your choice, get rid of the speed screw, for complete detail look at my link........

 

www.4btswaps.com

There is a lot you can do to the 4bt to get extra power, and the guys over on that page are gurus. Good luck, keep us informed and welcome to dbs!

 

Done. Thanks!

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I appreciate all of the information as well as the warm welcome. I have checked in over at 4btswaps.com and like y'all said, there is a ton of information there. Thanks again.

Robert

 

shares injectors with ve pump 5.9s I believe so theres options right there

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according do you sig its looks like a badass rig

 

swapping in a 4BT and a 6BT require about the same amount of work.......just less cylinders.........we got plenty of tech here to support the the 4BT/6BT so just hang around.......