For those that don't know, can pickup the newer style E85 sensor (same style as Haltech) from:


GM Parts Direct: Your direct source for Genuine GM Parts

PN's - Price (as of 24 April)

13577379 - SENSOR (short tube) - 65.62

13577394 - SENSOR (long tube) - 66.00

13352241 - HARNESS - 8.16

Hope this helps folks looking for a cheaper route to go to buy the sensor.

 

good find, thanks for sharing.

howard

 

What does the "long tube" and "short tube" mean? These are the "flex fuel" sensors that determine the amount of ethanol in the fuel you're using right?

 

Both are basically the same thing except one has longer fuel lines for the send / receive as the other. Yes they are flexfuel sensors that determine the ethanol percentage / fuel temperature just like the older model bulky GM sensor.

 

Very nice! Thanks for sharing!

 

Thanks for sharing.

That short sensor would work much better for my application. I wish I knew this a few months ago.

 

This is pretty awesome, perfect timing! What size inlet/outlet on these sensors? -6?

 

Lines are 3/8" in and out. If your wanting -6AN will need to purchase an adapter.

 

Yeah 3/8 = -6 thanks for the info! I will just get one of the OE push clip to AN connectors

 

Nice find. Wish I would of know a few months ago. At least I know a replacement sensor will relatively inexpensive.

 

Here's a pic of the the "13577379 - SENSOR (short tube)" with Russell 3/8 - 6AN adapters installed PN: 640850

 

Great info on the fittings , I was having trouble finding them. Thanks!

 

FWIW, just tuned a turbo Miata yesterday using the Sport ECU and flex fuel setup. Per Haltech's recommendations, we started with pump gas (E10) for the base tune. Car made 210 @ 11.5 PSI. Drained out the pump gas and dumped in 5 gallons of E85. Worked through the comp maps very easily. Ended up making 254 peak with the E85 at the same boost. Dumped the rest of the E10 we had left in with the E85. Composition sensor showed E50 and everything worked just as it was supposed to. The system worked well and was very easy to calibrate.

 

Chris, it sounds like if you want to properly tune this, you need gas and E85 available at the same time plus access to a dyno?
I guess drain all the E85 out or most of it and put gas in the tank and tune it on the dyno. After that, syphon out the gas and add as much E85 as you can and tune that on the dyno.
Sounds like quite the process that most people could not achieve.
I guess you could road tune it, starting out with E85 and later adding more gas to the mix? Might not be as accurate?

 

I did this car, pretty much from scratch, in about an hour and a half of total dyno time. Quicktune makes it go, well, quick.

Like any tuning, you don't need a dyno. I just prefer it and feel the results are better. You tune this on the street just like you do a regular fuel map. The process of doing the pump gas map first and then doing the E85 offsets based on that map should be followed. It can be done in the reverse order, but the numbers you need to use in the various maps become unintuitive.

 

From Haltech you can tune for E10 and add fuel or tune for e85 and take away fuel. Can't wait to get mine where I want it. Im still working on the E85 tune.

Is it possible to idle with 2x1700cc on on gas?

 

Ordered mine over a week ago.... Do they really take this long to ship?? I still have no email for indication it was shipped or anything

 

just as an update i got it, they were backordered on the pigtail.

installed and tucked under my FPR

 

^Nice to see someone else out there making some stainless hardlines. Although, the routing confuses me a bit

Why did you run the parallel feed lines above the UIM?

 

Cause I'm a boss .... Jk it's in my build thread

 

I saw it, thanks. Haha

 

I ended up pulling this out. It was doing weird stuff to my fuel pressure.
Might have to "T" it off of the return line. I think it was restricting flow.

 

Yeah that's why I put it after my rails.

 

Mine was in my return line too

 

Oh.... So what kind of pressure problems you having? I think I might throw mine into a loop line then.