# Cummins Lift Pump **URL:** https://forums.speedlife.net/t/cummins-lift-pump/200490 **Category:** PittSpeed Automotive **Created:** [November 3, 2008, 6:49pm UTC](https://forums.speedlife.net/t/cummins-lift-pump/200490 "2008-11-03T18:49:33Z") **Posts on this page:** 1 **Showing post:** 4
### Author: ![SmokinDiesel](https://avatars.discourse-cdn.com/v4/letter/s/57b2e6/32.png) [@SmokinDiesel](https://forums.speedlife.net/u/SmokinDiesel) #### Post date: [November 4, 2008, 1:50pm UTC](https://forums.speedlife.net/t/cummins-lift-pump/200490/4 "2008-11-04T13:50:40Z")
> [@Another goodie for the stang....](https://forums.speedlife.net/t/another-goodie-for-the-stang/38585/2): > > Hey thanks for the info > > First, I am reading the fuel pressure through the digital monitor in the attitude. i would assume its pretty accurate being that everything is digital. Like i said, it idles at 10psi and cruises about 8-9 on the highway. it will hold about 5-6 under a harder overdrive pull but i’ve seen as low as 2psi under a high rpm, uphill pull. > > Second, so i do have to pull the stock lp out of the tank to run an external kit like fass or airdog? if so…:doh::owned: > > Third, do i really need to go that big with a 150gph pump? i am about as far as i’m going to go with this truck (4" MBRP, KN Intake, Juice/Attitude) besides maybe some 275 RV injectors and 35’s. I dont want to push that trans (crappy mopar transmissions) any more than what i have. Can i get away with maybe a 100gph pump and not worry about the drawstraw? > > Fourth, do you think i can revive that lp and coax a little more time out of it by running an additive or is it permanently toast? > > Fifth, i usually try to stick with sunoco fuels since they winterize their diesel and i dont have to buy any antigel/conditioner in the winter. plus their fuels seem to have a little more “life” in them both gas and diesel. As far as gauges go … Analog is actually more accurate than digital … I prefer analog all day long … More accurate, easier to read at a glance, etc. But thats not here nor there. Do you NEED a 150? … No … a 100gph will work … but the ONLY way to keep the lift pump in the tank is to put a new draw straw in, which will require dropping the tank. So you can ethier drop it and put the straw in, or drop it and pull the pump out. Pulling the pump will take less time & less work to be honest with you. The 100GPH does not REQUIRE a draw staw like the 150 does … but without the pump needs pulled. Stay away from the K&N intake … There are GREAT for gasoline motors, but not so great for diesels. I have seen more K&N systems let debris in, than any other system. I would go with a AFE Stage II (what I run) or a S&B system (they are cheaper than AFE). I can send you prices if you want. Your not going to revive the LP … It is on its way out, and there is no stopping that. Sunoco is the way to do! :bigok: --- _[View the full topic](https://forums.speedlife.net/t/cummins-lift-pump/200490)._