Hi, Guest
09-25-2012, 02:38 PM
(09-25-2012, 12:55 PM)adamzx5 Wrote: I dont think the fuel pump could keep up.
Shouldn't be a problem. The real key to making more power is to flow more air - both in and out - the ideal fuel to air ratio never changes and so dumping more fuel into the cylinders simply doesn't work without adding the appropriate increase in air.
Even with a supercharger at 8 psi and 42 lb injectors my stock Zetec fuel pump has no problem delivering enough fuel and I've heard of turbo Zetecs making much more power being fueled by the stock pump.
The point though, is that installing larger capacity injectors without also flowing considerably more air, is basically an exercise in futility; not only will you not make more power you will probably create some driveability problems as the computer tries to maintain the proper fuel/air ratio.
2008 Fusion SEL MTX - DD1 * 2009 Fusion SEL - DD2 * 2007 Focus ZXW - R*I*P * 2004 Focus ZTW CD Silver - sold * 2004 Focus ZTW Black - sold * 2003 Focus ZTW Black - sold * 2001 Focus ZTW Gold - sold * 2000 Focus SE Wagon (ZTW option) - Black - sold * 2000 Focus SE Wagon (ZTW option) - Gold R*I*P
2003 Focus ZX5 infra-red Track Rat - R*I*P
2003 ZX5 CD Silver Track Rat - retired, but still in the driveway
New track rat: 2000 ZX3, Atlantic Blue * JRSC with lots more to come
* New Zetec crate motor - NFG - thanks Topspeed *
2003 Focus ZX5 infra-red Track Rat - R*I*P
2003 ZX5 CD Silver Track Rat - retired, but still in the driveway
New track rat: 2000 ZX3, Atlantic Blue * JRSC with lots more to come
* New Zetec crate motor - NFG - thanks Topspeed *