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View Full Version : fse power boost valve adj fpr thing


16v Nova Kev
15-04-09, 09:19 PM
how do you adjust these is it screw in to to reduce preasure or out:)
chimp007_uk
15-04-09, 09:21 PM
yeh. in the top next tot he vacuum fitting
16v Nova Kev
15-04-09, 09:22 PM
so turn it in to turn the fuel preasure down or up
chimp007_uk
15-04-09, 09:28 PM
not 100% sure, I wouldn't go messing with it. Either get a guage fitted and adjust or get it on the rollers with a wideband lambda.

I set mine up on a rolling road I had access to.
16v Nova Kev
15-04-09, 09:33 PM
too late i moved it lol
chimp007_uk
15-04-09, 09:44 PM
worst case scenario you run it rich and get bore wash, too lean and you melt things...
16v Nova Kev
15-04-09, 10:28 PM
cool cheers going to book an rr tomorrow
chimp007_uk
15-04-09, 10:29 PM
good plan :)
Will F
16-04-09, 08:46 AM
Or do the sensible thing and take it off and see how far you can throw it?
16v Nova Kev
16-04-09, 12:01 PM
Or do the sensible thing and take it off and see how far you can throw it?

i might take it off cos i do have a spare std fuel rail:D
chimp007_uk
16-04-09, 12:48 PM
I had one fitted to my xe, and when I set it up on the rolling road at 12.5:1 AFR it ran 4hp more than standard and had a slightly better fuelling (plotting it against rpm witht he wideband lambda).

4hp isn't amazing but its not bad. As I had the fpr for free, its a no brainer... :)
craig green
16-04-09, 01:26 PM
I had one fitted to my xe, and when I set it up on the rolling road at 12.5:1 AFR it ran 4hp more than standard and had a slightly better fuelling (plotting it against rpm witht he wideband lambda).

4hp isn't amazing but its not bad. As I had the fpr for free, its a no brainer... :)

Thats when they work as they should, all too often you will find the FSE's hold erratic fuel pressure & will give varying results from 1 run to the next.
Maybe acceptable on an N/A road engine but potentially lethal with forced induction.
16v Nova Kev
16-04-09, 01:33 PM
bummer i cant change it back i lost the tiny vac pipe that goes on to the std rail
chimp007_uk
16-04-09, 01:47 PM
Thats when they work as they should, all too often you will find the FSE's hold erratic fuel pressure & will give varying results from 1 run to the next.
Maybe acceptable on an N/A road engine but potentially lethal with forced induction.

I totally agree, to a point. If you get a well made one and not just a cheapy crappy china jobby.

Thats why I said set it up on a rolling road, you can monitor the fuelling. I ran mine over several runs and never skipped a beat... People run filter king regs with carbs all the time. I know the pressure is alot lower, but still the same principal.