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Hi guys,

I have a R33 that I'm redoing the fuel system on. 

Currently it had a hack job by a tune shop that they have cable tied the braided lines under the car and jerry rigged a stock hanger to use two pumps.

I've redone the fuel tank with a frenchy performance twin pump setup, have ordered custom brackets for the fuel lines.

My question;

I am running AN8 feed and AN6 return.

On the fuel rail is it normal to have an8 fitting on one side and the an6 on the other?

I also noticed my ethanol sensor on the return is only 5/16 instead of AN6, should I look at running it parallel or it won't be an issue?

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Put the FPR, after the fuel rail but before the Y split.

If not, fuel will find the path of least resistance and bypass the FPR.

Another option is, new 8AN feed, then use both the original feed/return as dual return (that's what I did).

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https://www.sau.com.au/forums/topic/486015-r33-fuel-setup/#findComment-7996191
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4 hours ago, Dose Pipe Sutututu said:

Put the FPR, after the fuel rail but before the Y split.

If not, fuel will find the path of least resistance and bypass the FPR.

Another option is, new 8AN feed, then use both the original feed/return as dual return (that's what I did).

Makes sense, just not sure how to put the ethanol sensor in parallel after the fpr.

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https://www.sau.com.au/forums/topic/486015-r33-fuel-setup/#findComment-7996206
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1 minute ago, Blakeo said:

Makes sense, just not sure how to put the ethanol sensor in parallel after the fpr.

You could do it underneath the car (I personally don't like this ideal).

Mine is in the boot, but it's also on the pressure side from the main tank to the surge tank.

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https://www.sau.com.au/forums/topic/486015-r33-fuel-setup/#findComment-7996207
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Just now, Dose Pipe Sutututu said:

You could do it underneath the car (I personally don't like this ideal).

Mine is in the boot, but it's also on the pressure side from the main tank to the surge tank.

I just saw one of these bad boys: https://www.radiumauto.com/Split-Flow-Flex-Fuel-Sensor-Adapter-P2194.aspx

Looks to be perfect solution.

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