topgun542

iTrader: (4)

I just wanted to show what i have been working on for a few weeks now. This is a 1999 FLEX FUEL silverado. Using a 0411 pcm and a flex fuel content sensor. Pretty simple of an installation, just wanted to show that it can be done! Wirings still messy but it will get cleaned up, i just wanted to protect it a little better before i get better wire wrap.

Sensor and pigtail


Wired in and going!



Overall it is awesome being able to go to any gas station and put in any mix, as before i was just on 85 so i struggled with the mixtures.

Suburbazine

Does that sensor give you temperature and contamination detection as well?

I would be a little worried about that hose touching the firewall, if the engine moves enough you'll have fuel everywhere.

topgun542

iTrader: (4)

It barely touches but yea the angle is not the best haha ill change it later, but yea it give both signals through the one wire.

kbracing96

iTrader: (26)

Can you post some more details on this?? Like what pin the PCM uses for the sensor? I have another one of those sensors as well as the old type of sensor. I'm wanting to do this on my 01 turbo truck but EFILive doesn't have a COS 2 bar for the only flex fuel OS I found for the 99-02 ECM's. Does HPT? I do have HPT, so could convert over. Would really like to convert this truck to FF like I did my Cruze.

Can you post the tune file your using if you don't mind?

topgun542

iTrader: (4)

I will when i get home tonight, and the os im using doesnt support 3 bar which sucks but it is what it is.

ZR1 DREAMING

iTrader: (28)

Sweet! Keep us posted on this.. looks too damn easy lol
Subscribed.

kbracing96

iTrader: (26)

Damn, kills my dream of a seamless FF turbo truck again!

Gadgetized

iTrader: (9)

This is what I did too. I mounted mine down in the return closer to the tank. I should have made it closer to the engine. I did a write up, but never finished it to post it. It is a very nice mod for our trucks if you want to run flex fuel with a power adder.

oakley6575

iTrader: (5)

I've been talking **** for two years about doing this to my truck but haven't taken the time to get it done. I would need a 3 bar OS like KB so that is shitty news.

I"m interested in how you wired it and what pins need to be used.

kbracing96

iTrader: (26)

Yours is an 03 though with the 1mg pcm. There are FF COS's for those. There is only one FF OS for the 99-02 512mb PCM's that I know of and apparently there is no COS or 3 bar for that OS, EFILive or HPT.

But I am still interested in how you wired it up. Hell, I might just do it with a 1 bar scaled MAF tune if I have too.