Ethanol blends
#103
Its not a narrowband - its a 4 wire wideband.. from my communications with Andy the lead engineer at adaptronic the oem sensor is very hard to control heater wise and is relatively sensitive. Its recommended to use a standalone 02 vs the oem sensor but none the less an individual can get by with the stock O2 sensor. Dont let this confuse you with the lambda module as its a completely different design structure for the bosch 4.9 sensor range.
#104
Registered
when i was tuning on pump gas, the oem sensor reading was very comparable to the wideband sniffer at the tailpipe, the tailpipe was a couple points leaner probably due to location. Versatuner log the oem sensor as Lambda values, not AFR.
#105
Registered
iTrader: (25)
It might be a semi-quasi WB at best, but I never really put a lot of faith in it.
I was referring to Shawn’s post previously. The NA Renesis should be tuned for around 0.89λ WOT regardless of E%. Using 0.78λ on gas is not only hurting power, it’s going to result in too much carbon deposits.
I was referring to Shawn’s post previously. The NA Renesis should be tuned for around 0.89λ WOT regardless of E%. Using 0.78λ on gas is not only hurting power, it’s going to result in too much carbon deposits.
#108
If anyone still has any doubts about the effectiveness of ethanol blends ...they should take a look at this :
https://youtu.be/6_DQPLihXfo
Interesting to refer back to this chart I posted a few years ago , looks much the same as the one he uses above .
https://www.rx8club.com/series-i-maj...4/#post4873018
An interesting observation for me is that the cooling effect is most noticeable with direct injection. As we don't have direct injection we can surmise that, for the Renesis, it would be somewhere in between the two charts he displayed.
His explanation mirrors my experience with ethanol blends over the years and it's why I really push the idea on to anyone that will listen wrt turbo conversions.
https://youtu.be/6_DQPLihXfo
Interesting to refer back to this chart I posted a few years ago , looks much the same as the one he uses above .
https://www.rx8club.com/series-i-maj...4/#post4873018
An interesting observation for me is that the cooling effect is most noticeable with direct injection. As we don't have direct injection we can surmise that, for the Renesis, it would be somewhere in between the two charts he displayed.
His explanation mirrors my experience with ethanol blends over the years and it's why I really push the idea on to anyone that will listen wrt turbo conversions.
Last edited by Brettus; 04-26-2023 at 12:31 AM.
The following users liked this post:
AAaF (07-28-2023)
#112
///// Upscale Zoom-Zoom
#113
Registered
iTrader: (25)
he’s no different than a lot of other people just like him who otherwise aren’t playing the youboob game seeking likes and clicks by regurgitating known and established information under the guise of “supplying content”.
There’s not anything new or different going on here. Which is pretty much the norm for that particular intraweb platform and this one too. It was well know even before this thread started in 2016 and it’s not mirroring your experience, but that of all the people who went there long before you did. I was running it back at least 11-12 years ago NA.
Not that I’m here to boast about it, but rather to support the point that it was before my experience too, which was before your own.
there are also better ethanol premix oils than that bump above.
.
.
There’s not anything new or different going on here. Which is pretty much the norm for that particular intraweb platform and this one too. It was well know even before this thread started in 2016 and it’s not mirroring your experience, but that of all the people who went there long before you did. I was running it back at least 11-12 years ago NA.
Not that I’m here to boast about it, but rather to support the point that it was before my experience too, which was before your own.
there are also better ethanol premix oils than that bump above.
.
.
#114
he’s no different than a lot of other people just like him who otherwise aren’t playing the youboob game seeking likes and clicks by regurgitating known and established information under the guise of “supplying content”.
There’s not anything new or different going on here. Which is pretty much the norm for that particular intraweb platform and this one too. It was well know even before this thread started in 2016 and it’s not mirroring your experience, but that of all the people who went there long before you did. I was running it back at least 11-12 years ago NA.
Not that I’m here to boast about it, but rather to support the point that it was before my experience too, which was before your own.
there are also better ethanol premix oils than that bump above.
.
.
There’s not anything new or different going on here. Which is pretty much the norm for that particular intraweb platform and this one too. It was well know even before this thread started in 2016 and it’s not mirroring your experience, but that of all the people who went there long before you did. I was running it back at least 11-12 years ago NA.
Not that I’m here to boast about it, but rather to support the point that it was before my experience too, which was before your own.
there are also better ethanol premix oils than that bump above.
.
.
#115
he’s no different than a lot of other people just like him who otherwise aren’t playing the youboob game seeking likes and clicks by regurgitating known and established information under the guise of “supplying content”.
There’s not anything new or different going on here. Which is pretty much the norm for that particular intraweb platform and this one too. It was well know even before this thread started in 2016 and it’s not mirroring your experience, but that of all the people who went there long before you did. I was running it back at least 11-12 years ago NA.
Not that I’m here to boast about it, but rather to support the point that it was before my experience too, which was before your own.
there are also better ethanol premix oils than that bump above.
.
.
There’s not anything new or different going on here. Which is pretty much the norm for that particular intraweb platform and this one too. It was well know even before this thread started in 2016 and it’s not mirroring your experience, but that of all the people who went there long before you did. I was running it back at least 11-12 years ago NA.
Not that I’m here to boast about it, but rather to support the point that it was before my experience too, which was before your own.
there are also better ethanol premix oils than that bump above.
.
.
I understand not liking the YouTube click bait, please like and subscribe, make me an "influencer", LEARN THIS ONE NEW TRICK ABOUT ETHANOL!!!, and associated BS that comes with the platform, but this video isn't that.
#118
If we take the above as being correct : For an FI Renesis ........... The biggest 'bang for buck' with the least amount of modification to fuel system and tune for us is going to be in that 20-30% ethanol content range. This also reduces the amount of premix you need and any negative side effects/deposits from running ethanol + premix.
Chart showing chemical octane advantage only. (copied from link to "uboob guy" above)
Chart showing chemical advantage in purple and total advantage (chemical plus cooling in DI engine)
Last edited by Brettus; 07-17-2023 at 06:58 PM.
#119
Registered
also a benefit of running e45 is you only have to bring half the amount of e85 to the track. then mix e85 and 93(e10) half and half and you get roughly e45.
#121
Registered
#123
By 'gain' they mean in octane rating. The gain in power in a turbocharged engine is directly as a result of improved octane (mostly) which allows higher boost. In an NA we are not knock limited so no gains there but can still get gains from being able to pack more energy per gram of air into the combustion chamber. By reducing ethanol content by half you reduce that gain by half.
#124
Registered
iTrader: (25)
There’s a lot you’re missing on this topic. As far as I can tell you never actually ran or even long term tested full E85. There’s more to it than octane, and certainly more to it than you’re aware of. That E-percentage testing data is very old. And it wasn’t conducted on a turbo rotary engine. And you certainly aren’t the source behind it, or have ever fully tested it yourself fully on a rotary engine. It’s just the usual 1 + 1 = 3 methodology.
.
Last edited by TeamRX8; 07-23-2023 at 09:04 AM.
#125
I swear you don’t have a lick of sense to just let it go. Just the same, I’m retracting my previous response.
There’s a lot you’re missing on this topic. As far as I can tell you never actually ran or even long term tested full E85. There’s more to it than octane, and certainly more to it than you’re aware of. That E-percentage testing data is very old. And it wasn’t conducted on a turbo rotary engine. And you certainly aren’t the source behind it, or have ever fully tested it yourself fully on a rotary engine. It’s just the usual 1 + 1 = 3 methodology.
.
There’s a lot you’re missing on this topic. As far as I can tell you never actually ran or even long term tested full E85. There’s more to it than octane, and certainly more to it than you’re aware of. That E-percentage testing data is very old. And it wasn’t conducted on a turbo rotary engine. And you certainly aren’t the source behind it, or have ever fully tested it yourself fully on a rotary engine. It’s just the usual 1 + 1 = 3 methodology.
.
Also ... Congrats on finally figuring out how to use the quote button ...well done!
Thread
Thread Starter
Forum
Replies
Last Post
jpo
Series I Trouble Shooting
0
01-31-2017 05:21 AM