Epsilon23

Hello,

I’ve just mounted an stage 2 (195+ superchip OFAC and beiges) on my EFI converted ERST and the car is running with 11.60 psi and pikes till 14.50 psi. When I tested the car in the motorway I noticed that at high revs the engine failed slightly when the throttle was fully opened.

I think that I have a correct reading of the fuel pressure (3.5 bar, 50.76psi) but I think there is not enough fuel flow. I have the std fuel pump and it is too noisy.

Could be a problem with the fuel pump? I was considering in remove it and buy sierra cosworth’s one.

Any advice would we really appreciated.

Cheers.

darrenb16two

For the price they are mate just buy one for piece of mind

Karlos G

iTrader: (4)

MFI RST Fuel pump will flow for 350bhp+ if it's in good condition.
Check you have alternator voltage at the pump, this is a common problem with old wiring.

Epsilon23

Thank you for the advice. How i could know if the pump is in good conditions?

Roscopeco

iTrader: (1)

So how come a lot of people upgrade to cosworth pumps then ?

I'm pretty sure mine is a standard pump and was thinking of getting a Bosch 044 but if standard pumps are good for that power I guess I'll leave it

XR2

That's because the word "Cosworth" makes 5 extra hp.


MFI and EFI are totally different systems. MFI fuel pumps have to work with higher pressure and more fuel/minute. They do the job of about two efi pumps. Not quite sure about the 350+ hp but standard ERST fuel pump in good condition should be enough to fuel 99% of the 1.6 CVH FRST engines.

Roscopeco

iTrader: (1)

So in your opinion , if my S1 is making in the region of 280bhp on efi will the standard pump be ok ?

Karlos G

iTrader: (4)

People upgrade because they can, not always because they need to... Yes it will be fine mate, I was running around that (32psi on a .48/60 T3) and then continued to use the same pump when I dropped the 2.0 ZT lump in and ran the turbo to it's limits (24psi), no problems with fuelling what so ever

Roscopeco

iTrader: (1)

Thanks for the reply , finally something I dont have to buy