A short while ago I picked up a bundle of bits off an AMC member who was going overseas.
One of the bits was a Fuel Pressure Regulator. Since then, it's been in my shed.

Took the car in for service last week (it needed it - was running a bit rough), and got the mechanic to install the FPR as well.

Looks cool under the bonnet and the car feels more responsive but some of that would be due to the tune as well.

http://i133.photobucket.com/albums/q65/DoddsFamily/Graeme/Car%20Clubs/DSCF0837.jpg

http://i133.photobucket.com/albums/q65/DoddsFamily/Graeme/Car%20Clubs/DSCF0840.jpg

The mechanic has a dyno too. Asked me if I wanted my car dyno'ed.
I asked how much. He said $88 I wasn't sure if that was good or not.
I said no, she's an almost stock engine so I'm guessing with a few K's under the bridge, it'd go a bit under what the owner's manual says anyway. So couldn't justify the cost at the moment.

Later I did start to wonder just how much she would have done - with the K&N, better exhaust and FPR. But maybe later in the year.

Is $88 good for a dyno run?

looks nice mate ,how much was the fpr?

AFAIK thats the figure you'd be looking at for a single run on the dyno, if not a bit more, so I say do it, you trust the guy and it's always fun to have a dyno sheet :)

i payed 66 bux for 3 dyno runs

looks nice mate ,how much was the fpr?Hard to say as I picked up lots of bits (strut brace, sway bars, FPR, etc.) from him at the same time as a package deal. I got a good deal, and he got to sell the bits before leaving Australia.

A dyno run would be a good idea to check if the FPR is making you run rich so you can set your pressure to the right amount so your not wasting fuel, and on the flipside you might have the pressure too low and be running lean.

This wouldn't be a dyno tune so don't pay for a $150 1 hour session when it'd only take 10 minutes.

Just wondering guys, is it $88 for a dyno tune? Or just $88 on the dyno to see how much power the car has? Cos I'll be paying around $380 for a dyno tune

If it's $88 just to see how much power the car has, i'd probably look elsewhere cos that seems a bit pricey to just put the car onto a dyno and see how much it makes I reckon.

But yeah, if you're curious and you have the benjamins then why not eh! :D

Oh, btw that little guage thing under the bonnet looks really cool.
Nice work!
Is it supposed to do anything else but read the fuel pressure? Any performance improvements etc.?

What did you need a new fuel pressure regulator for? Was the stock one broken?

What did you need a new fuel pressure regulator for? Was the stock one broken?Nah, I went to buy some 2nd gen stuff off SEON (Past AMC Member). Asked how much for some bits like a strut brace, sway bar, etc. He came back to me with a price for those two and the FPR as a package deal. A price I couldn't ignore. Basically got the FPR for almost free.
Then once I had it, I may as well fit it.

...Oh, btw that little guage thing under the bonnet looks really cool.
Nice work!
Is it supposed to do anything else but read the fuel pressure? Any performance improvements etc.?It was originally bought from RPW.
I'll have a search with WAYBACK to find the old RPW site info. The current RPW site has a different FPR now.

Quote from an archived version of the RPW site...
Source: http://web.archive.org/web/20060906014554/www.rpw.com.au/shop/index.php?page=shop.product_details&flypage=shop.flypage&product_id=129&category_id=118&manufacturer_id=0&option=com_virtuemart&Itemid=31





FSE Fuel Pressure Regulator Kit

HOW DOES THE POWER BOOST VALVE WORK?
The Power Boost Valve is a high performance tuning part which replaces the original equipment valve (fitted to the vehicle). A range of models are available to suit a wide variety of European cars, which almost certainly includes yours. We are continually developing new designs to expand the number of applications. We outline the benefits of the Power Boost Valve by drawing a comparison evaluation: Ref: Original Equipment Fuel Pressure Control Valve
The electric fuel pump supplies fuel at a high pressure to the fuel rail and injectors, which is then regulated by a fuel pressure control valve. Typically, the regulator is not adjustable and is pre-set to a 3 bar maximum pressure. At idle the fuel pressure valve reduces it by 0.5 bar approximately to 2.5 bar. When accelerating quickly from standstill the fuel pressure increases at a proportional rate retaining a lean fuel mixture strength as required by the E.E.C. for new vehicles. However, the resultant effects of the standard valve produce:
1:- lethargic throttle response
2:- occasional driveability problems at slow traffic speeds
3:- intermediate performance 'flat spots' when accelerating (Most noticeable on MAP sensor model cars and newer return less fuel rail systems)

Firstly, this valve has an adjustable fuel pressure, effected by the movement of an adjustment screw on the crown of the unit.
New Power Boost Valves are pre-set with a maximum fuel pressure of 2.5, 3.0 or 3.5 bar, depending on the vehicle in question, and similarly (to the original valve) the fuel pressure is reduced by 0.5 bar approximately at idle. There the similarities end.
On acceleration from standstill the Power Boost Valve fuel pressure will increase at 1.7 times the standard rate. This will produce a healthy, strong fuel mixture strength which will instantly improve the drivability of your vehicle, providing:-
1:- instant throttle response
2:- removal of performance flat spots
3:- faster acceleration
4:- extra engine performance

The kit comes supplied with the adapter to fit into the fuel rail for most model vehicles and cover the whole Mitsubishi range.
The kit comes supplied with the fuel pressure gauge for easy adjustment (Fitted inside engine bay only)
This kit is compatible with both naturally aspirated (Recommended) and turbocharged cars (Highly recommended)

RPW Notes
We have had great success with these kits on all Mitsubishi MAP sensor model vehicles virtually eliminating factory programmed flat spots. With many vehicles with modifications like extractors, air cleaners and exhausts this flat spot is very noticeable, almost dangerous on the smaller motors.

When you have done any turbo conversion or planning on doing so, the rising rate unit means it also increases fuel pressure an additional 1.0 psi for every 1 psi of boost.

RPW also has available the Race Spec FPR units from FSE which are a rising rate of 1.7 : 1 under both vacuum and boost pressure for those running the higher boost levels.

When fitting any piggy back computer the fuel pressure reg is helpful when you run out of adjustment. This allows you to raise the fuel pressure and then pick up more adjustment points when using more limited systems like the Apexi SAFC systems with limted mappiing points.

The regulator enhances engine performance on acceleration by enriching the mixture strength. On constant throttle and cruise conditions the valve returns to a normal regulator function.
The Power Boost Valve is simple to install and in most instances basic fitting instructions are provided. These units are mechanical and are considered maintenance free.

There is much questioned ability of these units on "stock" cars. I thought since I ran lean on my dyno run on the qmd dyno day that a FPR would be advantageous to me. any thoughts boys? (FPR pretty much just richens the mixture correct? 1.7:1 instead of 1:1 sounds like its just letting more fuel through).