Exige S2 with added supercharger

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andybond
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Failed today. Fuel pump failed on dyno. FML.

Must clarify that I am not jumping the gun here ; It could be the wiring to the pump and not actually the pump. This will be cleared up in due course. All I can say at the mo is the pump isnt working.
johnfishcurtis
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Fuel pump died?
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andybond
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Yep! Deader than a dead thing that’s dead. Going to check everything and pull it out if needed.
johnfishcurtis
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Not a fuse (obv you did check this).

At least it died there, not on route to a track day or hammering down an epic B road.
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andybond
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100% not a fuse mate

It’s either wiring to the pump, or the pump itself. Either way , we will find the cause.

You read my mind on it not failing anywhere but the dyno..
lotuslee
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Andy not a huge issue to fix, if your fitting it yourself give me a call if you need a hand 👍
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andybond
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I have left it at RSTuning mate but I appreciate the offer Lee!
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andybond
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We appear to be back in the game.

The MRFU was causing funnies. Specky @RStuning was looking at fuel pump voltages and it was " all over " and then sometimes not enough to even switch the relay on for the fuel pump.

Some brief investigation followed and we worked out its the MRFU thats at fault. Look at the symptoms ;

Fuel pump mostly failing
Lambda sensor not reporting correctly

Two of the three things the MRFU is responsible for ..

Investigation has led to corrosion and decidedly second hand wiring in that neck of the woods and its been tidied up ( for now ) to get it running, mapped , circuit ready for BH Monday @ Anglesey. Ill do the usual throw some cash at the issue over winter to properly inspect everything.

I also suspect as the fuel pump voltage was all over it might explain the drop in power initially.

Roll on the mapping!

Big thanks to Spitfire ( Gaz ) for being super fast at replying and offering to swap my pump out whenever needed.
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Type116
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those bloody MFRU's! they are a nightmare!

glad its fixed! fingers crossed for a nice result.
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andybond
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Tbh Chris I am not looking for bonkers power. Just something useable. Any more than I have had is a bonus.
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