Well a long story short, I’ve had it with this thing. I can’t get it to give me a low enough fuel pressure. I don’t know why it won’t but on my Walbro 255 with the smallest bypass fitting I can only get down to roughly 42 psi. That just a few psi more then what I need and its causing my car to run to rich. I’m up…err downgrading to a NISMO fuel pressure regulator since the CA guys actually have good luck with those.
The Synapse Synchronic FPR was designed to bring you all of the features and adjustability of every FPR on the market in the smallest footprint you will find. The patented technology (Patent 6,863,260) that drives Synchronic FPR is the fundamental redesign of the inescapable actuator. What this technology allows us to do is bring you an FPR that is 1/7th the size of any FMU on the market. But this is more than an FMU, it can be used as a true 1:1 FPR that you can use to fine tune flow in your performance race engine.
Features
* Direct bolt-on to the fuel rail * Absolutely no additional fuel lines to re-work from stock * Guaranteed 1:1 off-boost ratio for a proper air/fuel ratio at idle * Infinitely adjustable from 1:1 to 12:1 boost indexed fuel pressure ratio * Interchangeable adapters for various applications * Adjustable static fuel pressure * Maintenance of fuel rail pressure with engine off for immediate ignition on the next cycle (same as stock) * Interchangeable bypass orifice diameters to accommodate high flow fuel pumps * Absolutely no diaphragms to fail, easily rebuildable with new seals * Tough enough for direct application of Nitrous * Patent 6,863,260 * The First And Last Fuel Pressure Regulator You Will Ever Buy!
Synapse Synchronic technology has eliminated the diaphragm, by using a piston contacted with an axial contact, engineered, aerospace, elastomeric seal. This seal is designed to withstand 800 psi of burst pressure and resist gasoline and methanol. Because there is not diaphragm, noise in the fuel rail is significantly reduced, allowing the fuel injector to precisely deliver the necessary fuel. A diaphragm has to deflect before actuating the valve that controls the flow of fuel. This results in overshoot and hysteresis from the target fuel pressure. Diaphragms are also mainly flat elastomer sheets with large surface areas. Accordingly, the performance of the diaphragm is significantly impacted by temperature, components of the fuel, durometer of the diaphragm, etc.
We’ve eliminated these problems by linearizing the response of the FPR via friction. Now, when pressure requires the piston to actuate, there is not diaphragm that has to deflect before acting upon it. Think of this like having a baloon between you and an object you are trying to push along the floor. Depending on how much the baloon is inflated, how thick the rubber is and how hot the room is will determine how much of your effort goes towards moving the object, versus simply just crushing the baloon. The effect is, ultimately, how long it takes before the object moves when you push on it through a baloon. That is why we eliminated the use of a diaphragm.
The model number is SC001A. You can check there website for specific fitments. Link to Synapse Engineering
This regulator as seen only a few tanks of gas. The thing is almost new. This will include all the bypass fittings and adapter fittings that came with it. The only thing missing will be the two bolts to hold it on to the fuel rail. I had to buy ones specific for the CA, and have since lost the originals that came with it.
I am selling this thing for a hell of a deal at $150.00.
Feel free to PM me with any questions you may have.