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Old 10-24-2010, 09:05 PM
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regulated fuel return

i know that i have found it somewhere that the 7.3 has problems with low fuel pressure in the #8 injector due to the dead head style of fuel system. i want to put a few parts on, mostly for longevity but also to give myself a base for upgrades down the road. while looking for an ITP regulated fuel return system it seemed that that the price was really expensive ($500-600) and i wasn't sure why. could anyone provide insight on this and how they work as well as the high pressure crossover for the oil line that feeds the injectors... thanks.
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Old 01-06-2011, 10:03 PM
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bump for this post, has anyone installed a regulated fuel return? i'm curious as to the benefit of this upgrade for durability and longevity
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Old 01-07-2011, 05:05 AM
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I have been running the Sinister (formerly ITP) RR for over 30,000 miles. It smooths out the idle and quiets the engine. Before the RR, 2stroke oil would make a huge difference, now it's like I'm running it even when I don't put any in.

I also have the HPX tube. Can't tell any difference, perhaps would be more noticeable on a stock truck. It is supposed to smooth out the pressure between the two rails resulting in a smoother idle. On the plus side, it's much easier to install than the RR.
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Old 01-07-2011, 05:12 AM
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I would like to know as well.
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Old 01-07-2011, 10:23 AM
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would this upgrade be more noticable to a truck that has an upgraded fuel system and oil system? such as bigger injectors, larger lift pump/ injection pump, HPOP udgrade? then the high fuel upgrades would be receiving fuel because of the regulated return.
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Old 01-07-2011, 10:40 AM
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Just some info. I built my regulated return and fuel bowl delete, as well as building a twin pump and twin filter setup for about 500-550. You can get the parts to do the RR and fuel bowl delete from summit. They make their own brand of ss line and fittings that are resonably priced. The filter housing i used a piece of 2x3 box and mounted both pumps and filter bases. the filter bases i got from napa.
The RR return definately helps with the number 8 stavation. Smoothes idle. The cross over also helps with the number 6 and 8 injector starvation of oil, it balances the pressure between the two rails. I also built mine with some 3/8" tubing and two adapter fittings.
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