Region: OVR
Car #: 88
Year : 1991 Posts: 2401
Status: Offline
posted
Would someone educate me on the necessity of a fuel pressure regulator on a 1.6 car? When I bought my current motor the builder was pretty adament that I measure the high-side fuel pressure to insure that it was within factory range, lest bad things happen to my new motor. Apparently lack of adequate pressure is not good(done blowed up). I imagine that a regulator can only lower pressure. When I can control lean/rich at the MAF clockspring why would I want to lower FP?
Region: chicago
Car #: 72 and ?
Year : 90 and 90 Posts: 1051
Status: Offline
posted
I have only dynoed a single 1.6 car with an adjustable regulator. The adjustable regulator made more power with an untouched AFM than adjusting the AFM.
Admittedly this is a sample of one. As I get time to try more cars, I post my results.
Dave
-------------------- Advanced Autosports, The Midwests leader in Spec Miata Service, Parts and Rentals 608-313-1230 Authorised Spec Miata service center www.advanced-autosports.com
Region: CFR
Car #: 97
Year : 1990/99 Posts: 788
Status: Offline
posted
I have seen people adjust fuel pressure in 1.6 for a longtime. It makes for a better tune then just jacking with the AFM. Fuel pressure will make slightly more power and a lot better drivability as the AFM spring stays closer to its stock location.
-------------------- 2010 ARRC Champion 2010 CFR Champion 2010 instigator of the year 2010/2011 Andrew Von C Wingman
Region: Houston; SWDIV
Car #: 15
Year : 99 Posts: 680
Status: Offline
posted
I don't think Dave 99 setup will work with a 1.6. The fuel delivery systems are different setups and don't work the same. The 1.6 is a loop back and the 99 a dead head.
-------------------- James York
sponsored by: Stan's Auto Center, Lafayette LA powered by: East Street Racing, Memphis TN set up guru: Gilfus Racing, Austin TX
Region: chicago
Car #: 72 and ?
Year : 90 and 90 Posts: 1051
Status: Offline
posted
When I get home from Homestead I will be working on the NA regulator. I know it will help on the 94-95 car. The 96-97 will work, but I don't know how much benefit it will be.
1.6 has worked on the one car I tested. More dyno work is exoected when I get back home
Dave
-------------------- Advanced Autosports, The Midwests leader in Spec Miata Service, Parts and Rentals 608-313-1230 Authorised Spec Miata service center www.advanced-autosports.com
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people adjust fuel pressure in 1.6 for a longtime. It makes for a better tune then just jacking with the AFM. Fuel pressure will make slightly more power and a lot better drivability as the AFM spring stays closer to its stock location.
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