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Old 03-13-2019, 10:46 AM   #251
HyperBSTI
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Originally Posted by redrexmeister View Post
Just found this thread, quite awesome to see this DIY option. i am strongly considering to try it out.

I have a question about tuning with this setup. Is it fully equivalent to Cobb FF kit? In other words, if I communicate with a tuner do I just say that my car has XYZ mods plus a Cobb Flex Fuel kit?

or do I need to offer any specific details about this set up as an equivalent to Cobb's kit?

What company or tuner do you use for tuning your cars with FF kit?
Per other posts in this thread. This kit is just like the Cobb kit. All it takes is for a tuner to enable the flex fuel kit option in the accessport for it be able to read the ethanol content. You will need a Flex Fuel protune in order to run both e85 and 91/93 octane.
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Old 03-13-2019, 11:55 AM   #252
redrexmeister
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Cool, thanks for clarifying. I will start ordering parts.

I am reasonably confident to be able to assemble this kit. However, I have rudimentary programming /coding skills. Perhaps, someone local can help me out with the program here.
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Old 03-13-2019, 10:05 PM   #253
Bowezz84
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Originally Posted by goldfingerfif View Post
I paid $21.98 for 5x Male TGV, 5x Female TGV, 5x Rear O2 Male, 5x Rear O2 Female connectors (20 connectors, including pins and silicone seals). Poverty was meant as a joke but also for emphasis of the inferior quality of the parts used by Cobb of plastic compared to billet aluminum, and rubber/epdm with nylon/pet braiding vs PTFE (Teflon but cant call it that since it is a DuPont Trademark) with Stainless Steel braiding.




I've been running it about 2 years with the lines but I haven't installed my flex fuel "computer" yet, adding a little bit of extra code for precautions as well as some code to do some other experiment that I will say if it proves successful.

Here's an older picture, things are slightly different.




I don't believe ground should matter but for me I ground the ethanol sensor through the O2 Sensor and everything else through the TGV.

Where did you but your connectors?
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Old 03-14-2019, 05:43 PM   #254
redrexmeister
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Do you guys also install Cobb FPR with the ethanol sensor kit? any generic or DIY alternatives to Cobb fpr? Last time I checked, it was about $300...
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Old 03-14-2019, 11:04 PM   #255
HyperBSTI
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Originally Posted by redrexmeister View Post
Do you guys also install Cobb FPR with the ethanol sensor kit? any generic or DIY alternatives to Cobb fpr? Last time I checked, it was about $300...
There's a diy for the fpr. https://forums.nasioc.com/forums/showthread.php?t=2681592

I did not go that route as I prefer to have an adjustable FPR for future proofing.
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Old 03-19-2019, 06:56 PM   #256
Bowezz84
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Originally Posted by Stija View Post
I just tested mine with 3/8 cuz I had to find out whether it would work and it did.

Im getting a 0.80-0.82v reading on my left tgv and also two codes, most likely due to the signal going into the tgv. Gonna return car to normal and off to work.

It works!
So were you able to use 3/8 connectors on both the sensor and the factory fuel line connection point and did you use 5/16 or 3/8 line?
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Old 03-21-2019, 09:17 PM   #257
Bowezz84
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Originally Posted by pearson222 View Post
Pretty sure cobb is just using one of these linear pwm to 5v converters. The unit is only 20mm x24mm which seems to match their enclosure. I am looking into using one also since water was able to creep into my enclosure over winter and cause havoc on my nano.

https://www.ebay.com/i/321403903002?chn=ps
Did u ever get this to work?
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