Hi Guys,
I was wondering if a flex fuel E85 tune would work for an MY10 Liberty GT Auto?
Do you need an ethanol content sensor?
Does it work with the stock ECU?
Cheers,
Rift.
realrift wrote:Hi Guys,
I was wondering if a flex fuel E85 tune would work for an MY10 Liberty GT Auto?
Do you need an ethanol content sensor?
Does it work with the stock ECU?
Cheers,
Rift.
kiwigene wrote:I've never had any significant issues with cold starts. Only now, since the overnight temps are getting below 10°C, is there sometimes a slight hesitation after cranking. But seriously, it's a single crank and the engine starts immediately. I just wait for the fuel pump to prime and that's it. Even after the car sat for 3 weeks at the airport, 8°C in the morning, it started up just like normal. I'm surprised you have any issues at your temperatures Tom.
kiwigene wrote:Just ran from Traralgon through Melbourne (maybe 50kms at urban speeds) to Albury with E85 from United. On the freeway was doing between 100 and 102 or 110 and 113 where permitted. 4 up in the car with a weeks worth of luggage. Averaged 11.4 l/100km. Filled up with ~55 litres BP ultimate 98 and was doing between 110 and 115 for a little over 500km. Averaged 8.6 l/100km. Thank you Matt for "virtual" flex fuel!
tom_kauf wrote:kiwigene wrote:I've never had any significant issues with cold starts. Only now, since the overnight temps are getting below 10°C, is there sometimes a slight hesitation after cranking. But seriously, it's a single crank and the engine starts immediately. I just wait for the fuel pump to prime and that's it. Even after the car sat for 3 weeks at the airport, 8°C in the morning, it started up just like normal. I'm surprised you have any issues at your temperatures Tom.
Hmm, interesting. Are you running Matt's Flex Tune? And I assume larger aftermarket fuel pump? (I have a Deatschwerks DW300c).
I have kept a spreadsheet of my various cold starts. Only the time since shut down made a difference (8h was still ok with 3 cranks, 12h always meant 6 cranks).
Even 3 primes of the pump made no difference. And temperature ranges of 17-24deg had no effect.
Matt's link to those Anti-drain-back Valve parts look interesting! I might get those.
bigBADbenny wrote:kiwigene wrote:Just ran from Traralgon through Melbourne (maybe 50kms at urban speeds) to Albury with E85 from United. On the freeway was doing between 100 and 102 or 110 and 113 where permitted. 4 up in the car with a weeks worth of luggage. Averaged 11.4 l/100km. Filled up with ~55 litres BP ultimate 98 and was doing between 110 and 115 for a little over 500km. Averaged 8.6 l/100km. Thank you Matt for "virtual" flex fuel!
It's been a while since I've been in contact with Matt... He's got VFFT for the my07 GT spec B 2.5l ???
tom_kauf wrote:
Matt's link to those Anti-drain-back Valve parts look interesting! I might get those.
alexeiwoody wrote:tom_kauf wrote:
Matt's link to those Anti-drain-back Valve parts look interesting! I might get those.
Don't waste your money or time.
Read that link Matt posted. We proved him wrong a long time ago in that very thread, with an email from DW explaining there are valves in place (obviously), and videos of a DW65 in action, working exactly as supposed to, and not like Matt described.
Just to recap:
1. No need for double o rings on pump
2. No need for extra anti drain valves
3. Just make sure the pump is installed correctly
4. Most of the cold start issues are in the tune. A lot of Matt's customers seem to have issues with the cold start. Maybe the stock injectors contribute, or more likely the cold fueling tables are slightly off.
After being tuned by MSR, my lib started on e85 like it does on 98. You wouldn't be able to tell the difference. Cold, warm etc.
I'm sure we'll get a response from Matt about how he gets various cars (as always - it's not anyone we know...) to start on half a crank, but we've been through this over and over - there is absolutely no need to make up stories of faulty pumps or lacking drain valves.
Increase the fuel during start first, and see what happens. Tuning is not always a magic bullet, but in this instance - it's 99% the cause. Hopefully you get it fixed instead of getting more excuses.
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