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Thankxx.....I`m no expert by any means and am open to all suggestions. It`s possibly a combinatin of ALL the above as this thing has hundreds of street miles w/open pressures bet 580-600lbs and closed #`s around 260-280. I`ll flow my pump again at the new 9 lbs. and see how long it takes to get a gal.



with an adequate pump you don't need 9 lbs of fuel pressure. volume is the key thing. if your raising fuel pressure and the e.t. improves, you need more volume.
raising the pressure is nothing more than a band-aid. 7.5 lbs should me more than enough pressure if you have enough pump and proper sized fuel lines.