1st gen question

931stgen · 03-07-2009, 11:01 PM

im hearing that the fuel pressure leans out on higher RPM's as i read and read and try to decipher the abbreviations but my question is if i run two walbro 255's will this fix the lean out problem or is it just because of the fuel pressure of the tanks thank you

madramper · 03-10-2009, 03:19 PM

It leans out because they only have 155lph pumps (or at least somewhere around there). Guys are running a 2 pup trick that turns both fuel pumps on at the same time, as well as an inline pump. This provides enough fuel to go pretty fast. There are also a few guys that have sumped their rear tank and ran a dedicated fuel system with two 255lph pumps.

The question is, how thick is your wallet and how fast do you want to go

931stgen · 03-10-2009, 11:27 PM

Well what I want is the truck to have is around 600 hp money doesn't matter but what I'm worried about is if I do the two pump trick do I need two fuel gauges and I want to keep the front tank because I don't want to have toworry about where the next gas station is and also could some one point me to where I can find a nice sex of fuel rails and injectors and lines thank you

madramper · 03-11-2009, 07:52 AM

Check out Jeff's thread. He built a fuel system that kept the front tank.

I finally fired the fuel system up...

turbodgumby · 03-12-2009, 04:23 AM

have ??? but will start a new post

03-07-2009, 11:01 PM	#1 (permalink)
931stgen Registered User Join Date: Oct 2007 Posts: 2 View this user's gallery iTrader: 0 / 0%	1st gen question im hearing that the fuel pressure leans out on higher RPM's as i read and read and try to decipher the abbreviations but my question is if i run two walbro 255's will this fix the lean out problem or is it just because of the fuel pressure of the tanks thank you

03-10-2009, 03:19 PM	#2 (permalink)
madramper Supporting Vendor Paid Member Join Date: Jun 2002 Location: Alloway, NJ Posts: 11,493 NLOC member #: 937 View this user's gallery iTrader: 43 / 100%	It leans out because they only have 155lph pumps (or at least somewhere around there). Guys are running a 2 pup trick that turns both fuel pumps on at the same time, as well as an inline pump. This provides enough fuel to go pretty fast. There are also a few guys that have sumped their rear tank and ran a dedicated fuel system with two 255lph pumps. The question is, how thick is your wallet and how fast do you want to go __________________ Black 93 #4693 - 7-2-93 Matt Hill Motorsports Tuned 550 RWHP 570 RWTQ Videos

03-11-2009, 07:52 AM	#4 (permalink)
madramper Supporting Vendor Paid Member Join Date: Jun 2002 Location: Alloway, NJ Posts: 11,493 NLOC member #: 937 View this user's gallery iTrader: 43 / 100%	Check out Jeff's thread. He built a fuel system that kept the front tank. I finally fired the fuel system up... __________________ Black 93 #4693 - 7-2-93 Matt Hill Motorsports Tuned 550 RWHP 570 RWTQ Videos

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03-10-2009, 11:27 PM	#3 (permalink)
931stgen Registered User Join Date: Oct 2007 Posts: 2 View this user's gallery iTrader: 0 / 0%	Well what I want is the truck to have is around 600 hp money doesn't matter but what I'm worried about is if I do the two pump trick do I need two fuel gauges and I want to keep the front tank because I don't want to have toworry about where the next gas station is and also could some one point me to where I can find a nice sex of fuel rails and injectors and lines thank you

03-12-2009, 04:23 AM	#5 (permalink)
turbodgumby GOT BOOST?? Paid Member Join Date: Jan 2009 Location: Port Acres, TX Posts: 1,192 NLOC member #: 2673 View this user's gallery iTrader: 0 / 0%	have ??? but will start a new post