3rdgen. I noticed you installed it only in the primary location so it does not see the full flow of the fuel pump setup. That may be a better option inorder to reduce the flow restriction.

I will install mine with a loop bypass around it

 

It was bouncing all over the place. Removed it and now it is consistent

 

Rene, that's really why I put it there, however I think I might put a loop line as well just to be safe.

Interesting, do you have pics of your fuel lay out?

 

^ Are you asking me or RXTASY57 about layout?.

right now I just have it in the return line but I am going to be making new fuel lines and will plumb it in then with the loop.


RXTASY57 do you have any more info about your fuel setup and what fuel pressure problems you were having?

 

Sorry lol I was asking rxtasty

 

Sorry lol I was asking rxtasty

 

50 psi fuel pressure here, no problems.

 

I will be running close to 90 at full boost. So this is a concern for me lol glad rxtasty found this issue before I was beating my head against the wall.

 

I am running 65 base PSI with 2- 044 pumps.

 

Out of curiosity, did you check your base pressure while the sensor was installed?

I would think a flow restriction would be very apperiant at idle as this would be where the most fuel flow would be returned. Two 044s simple should return way more then the Flex fuel sensor can handle at idle. I would guess this would cause the base pressure to be artificially high. I am guessing when less fuel is returned, fuel pressure would lower to its real value, causing fuel pressue to appear to be wacky.

All just a guess but I am interested in if your pressure was indeed higher at idle. Thankfully the sensors requires very little fuel to get a accurate reading. Splitting off the sensor from the main return is just something that should be done when dealing with as much fuel flow as we are using.

 

Great find!

But guys, Haltech is "just adding" 250% of the original price... *rolling eyes*
Glad that I did not already ordered my sensor...

 

I don't know how I feel about mounting that sensor on top of your engine. If is plastic and who knows if in time the fuel will weaken the sensor. I would Mount it further down possibly by steering column/ lower fire wall.

 

So is there anything different to calibrate this sensor versus the Haltech one or are they exactly the same?

 

Nope they are identical

 

Wow. Dirty haltech!
Ty sir for the clarification.

 

Did you end up using a loop line? Im curious about the erratic fuel press situation. Im thinking of installing it on the primary return before the FPR as you have.

 

My sensor/pigtail/fittings arrived today.

Is there a trick to installing the fittings ? seems they are smaller in length than the tube and it doesn't seal. does the tube need to be cut ?

Thanks

 

Can you post some pics?

 

I'm using all -6 push lock lines..no loop... flex sensor on the return.....zero fp problems

 

Agree with manny shouldn't have any issues.

 

I think if you have the long version of the sensor the tube may need to be cut. You should confirm, but I remember reading it on an MR2 forum.

I have the short version sensor and the Russell -6 adapters worked just fine.



There are two versions of the adapter fittings. One uses a plastic push-on clip. The other is threaded and uses a threaded cap. These are the threaded type, which seems more reliable to me.

 

I just used the Russell push locks. I really would recommend against cutting.

 

That's what I'm using...and don't cut those...

 

I also used the push-locks (same part number I previously posted). Have you tried to fully seat the fittings on the sensor?

 

on the subject of pressure fluctuations using it on the return line, this is a set up I have for another of my cars, its for a car with no return line but you get an idea of the bypass which should clear up your pressure issues