oft e85 question?

[steve99]

Originally Posted by cawith

I'm thrilled to try E85 myself in a couple of weeks. Hope the cold starts won't be a problem as I live in Scandinavia. But as E85 is quite a regular fuel in Sweden, where it can get really cold, I think it isn't going to be a problem.
Can you just clarify the following for me? Running premium gas on E85 map would be damaging I presume. But running E85 on a normal gas stage 1 map shouldn't hurt the engine, right? I know that the ECU will take longer to adapt, but it will do so in the end, when there's only gas left in the tank after the next fill up. I'm not planning on doing this though, it's just nice to know in case of emergency.

E85 map runs about 30% higher injector scaler ie 30% more fuel. and about 10 degrees or so more timing. Far to much advance for pump petrol to handle so it would knock like crazy and run 30% rich.


If you tried to run E85 on a petrol map its going to run 30% lean, the fuel trims would try to correct this but its towards the limit of the trims and running 30% trims would not be good.

I would not recommend doing either.

use correct fuel with correct map.

you could mod your map with the cold start mods. ie increased injector pulse widths during startup cranking with romraider. Also adding a couple of litres of petrol during winter will assist starting.

What calid is your rom A01G by any chance ??

[cawith]

Originally Posted by steve99

E85 map runs about 30% higher injector scaler ie 30% more fuel. and about 10 degrees or so more timing. Far to much advance for pump petrol to handle so it would knock like crazy and run 30% rich.


If you tried to run E85 on a petrol map its going to run 30% lean, the fuel trims would try to correct this but its towards the limit of the trims and running 30% trims would not be good.

I would not recommend doing either.

use correct fuel with correct map.

you could mod your map with the cold start mods. ie increased injector pulse widths during startup cranking with romraider. Also adding a couple of litres of petrol during winter will assist starting.

What calid is your rom A01G by any chance ??

Ah okay, but as said, I'm not planning on doing so. Just wondering if one thing would be more harmful than the other.

I think the calid was initially A00G but the OFT flashed the A01G, which I'm running now... Why?
So how low would you say that I should run the tank before filling with premium gas and flashing gas map again?

A little off topic, but is there a reason why there are no 91 oct (RON+MON)/2 maps for EU cars? Shouldn't the cars essentially be the same, even though EU cars are labeled to require at least 98 RON (93 oct US)? It would be nice to have a map for 95 RON, for when premium isn't available.

[steve99]

Originally Posted by cawith

Ah okay, but as said, I'm not planning on doing so. Just wondering if one thing would be more harmful than the other.

I think the calid was initially A00G but the OFT flashed the A01G, which I'm running now... Why?
So how low would you say that I should run the tank before filling with premium gas and flashing gas map again?

A little off topic, but is there a reason why there are no 91 oct (RON+MON)/2 maps for EU cars? Shouldn't the cars essentially be the same, even though EU cars are labeled to require at least 98 RON (93 oct US)? It would be nice to have a map for 95 RON, for when premium isn't available.

I have an a01g map with the cranking pulse widths increased but its A01G so your oft wont load it, its pretty easy in romraider.

Guys have run E85 for thousands of kilometers without changing back to petrol

see the E85 thread below. no one has seen evidence of injector deposits like shown in those threads, guys that pulled injectos after 1000's of miles on e85 all looked clean.

http://www.ft86club.com/forums/showthread.php?t=64621

http://www.ft86club.com/forums/showthread.php?t=51252

The G series maps are all actually 91 (RON+MON)/2 maps as the usa 93 fuel is superior to 98 ron fuel and you just get knock. The only map changed is the BASE_TIMING_B the 91 maps have about 1 .5 degrees less advance over 5000 rpm compared to the 93 maps.

[steve99]

E85 on stock car
http://www.ft86club.com/forums/showthread.php?t=67310

E85 Cold Start Injector Pulse Width mods

http://www.ft86club.com/forums/showp...1&postcount=40

[cawith]

Originally Posted by steve99

I have an a01g map with the cranking pulse widths increased but its A01G so your oft wont load it, its pretty easy in romraider.

Guys have run E85 for thousands of kilometers without changing back to petrol

see the E85 thread below. no one has seen evidence of injector deposits like shown in those threads, guys that pulled injectos after 1000's of miles on e85 all looked clean.

http://www.ft86club.com/forums/showthread.php?t=64621

http://www.ft86club.com/forums/showthread.php?t=51252

The G series maps are all actually 91 (RON+MON)/2 maps as the usa 93 fuel is superior to 98 ron fuel and you just get knock. The only map changed is the BASE_TIMING_B the 91 maps have about 1 .5 degrees less advance over 5000 rpm compared to the 93 maps.

Originally Posted by steve99

E85 on stock car
http://www.ft86club.com/forums/showthread.php?t=67310

E85 Cold Start Injector Pulse Width mods

http://www.ft86club.com/forums/showp...1&postcount=40

It's not that I don't want to run E85 as much as possible, however it isn't available in Denmark. Luckily I live just 27 km drive across a bridge from Sweden, where I can go and get it, and it's also cheap. However if I go somewhere else in Denmark, I'll either have to make sure to be able to drive back on what's left in the tank, bring an extra canister or refuel with premium and then reflash.
If the map you have is A01G, and the stage 1 that my OFT flashed onto the ECU was also A01G, wouldn't it work then? I think you told me in another thread that the change of calid was normal, and that I was running a A01G map even though OFM states calid as A00G.

Oh, I actually thought that EU fuel was at least as good if not better than american. So I'm running Shell V-Power 99 RON on a 95 RON map, kind of? So it may be possible to squeeze even more out of the engine, if the 99 RON does live up to your 93 standard?

I've already read the threads that you linked to. By reversing the procedure when going back to gas, I guess you mean doing exactly the same just with the other fuel, and not going through the procedure from bottom to top..?

[steve99]

Originally Posted by cawith

It's not that I don't want to run E85 as much as possible, however it isn't available in Denmark. Luckily I live just 27 km drive across a bridge from Sweden, where I can go and get it, and it's also cheap. However if I go somewhere else in Denmark, I'll either have to make sure to be able to drive back on what's left in the tank, bring an extra canister or refuel with premium and then reflash.
If the map you have is A01G, and the stage 1 that my OFT flashed onto the ECU was also A01G, wouldn't it work then? I think you told me in another thread that the change of calid was normal, and that I was running a A01G map even though OFM states calid as A00G.

Oh, I actually thought that EU fuel was at least as good if not better than american. So I'm running Shell V-Power 99 RON on a 95 RON map, kind of? So it may be possible to squeeze even more out of the engine, if the 99 RON does live up to your 93 standard?

I've already read the threads that you linked to. By reversing the procedure when going back to gas, I guess you mean doing exactly the same just with the other fuel, and not going through the procedure from bottom to top..?

The oft A00G map is actually a A01G map but its calid hacked to look like an A00G. so your oft will still look for A00G map and will not load my A01G maps.

Its safer to alter the tables in romraider than use hexeditor to hack the calid.

Everyones fuel is different yours may be better than ours we struggle to run the usa 91 maps on out 98ron fuel still get knock.

If your getting no knock over 5000 rpm on your current map you could copy the BASE_TIMING_B table from a usa 93 stage 1 tune into your map or just look at the changes between 91/93 usa map and make same changes to yours its just that one table.

98 ron is supposed to be equal to USA 93 but ours is not :-( its not quite as good usa 91.

E85 gives us a big boost here

[cawith]

Originally Posted by steve99

The oft A00G map is actually a A01G map but its calid hacked to look like an A00G. so your oft will still look for A00G map and will not load my A01G maps.

Its safer to alter the tables in romraider than use hexeditor to hack the calid.

Everyones fuel is different yours may be better than ours we struggle to run the usa 91 maps on out 98ron fuel still get knock.

If your getting no knock over 5000 rpm on your current map you could copy the BASE_TIMING_B table from a usa 93 stage 1 tune into your map or just look at the changes between 91/93 usa map and make same changes to yours its just that one table.

98 ron is supposed to be equal to USA 93 but ours is not :-( its not quite as good usa 91.

E85 gives us a big boost here

Ah okay. Is A01G newer or are there any differences? I mean would my calid ever become A01G through an update from the dealership, or will it always stay A00G?

I'm not to comfortable with Romraider yet. Well actually it's more kind of a fear of f*cking something up and damaging the ECU or engine. But I'll try to read a bit more into it tonight and maybe try comparing the US 93 rom with my stage 1 rom. When editing in romraider, I guess I should go for the calid of my car then, A00G.

I haven't experienced any knock at all, and if I have I probably don't know what to look or listen for... It's always been a smooth acceleration up to the red line. I've done one or two logs, and they have both looked fine to my understanding.
Would it be only the BASE_TIMING_B table that I should copy over from the 93 rom?

[steve99]

Originally Posted by cawith

Ah okay. Is A01G newer or are there any differences? I mean would my calid ever become A01G through an update from the dealership, or will it always stay A00G?

I'm not to comfortable with Romraider yet. Well actually it's more kind of a fear of f*cking something up and damaging the ECU or engine. But I'll try to read a bit more into it tonight and maybe try comparing the US 93 rom with my stage 1 rom. When editing in romraider, I guess I should go for the calid of my car then, A00G.

I haven't experienced any knock at all, and if I have I probably don't know what to look or listen for... It's always been a smooth acceleration up to the red line. I've done one or two logs, and they have both looked fine to my understanding.
Would it be only the BASE_TIMING_B table that I should copy over from the 93 rom?

Your oft tuned rom is an A01G based rom thats had the calid changed back to A00G so its effectively an A01G rom. however your original rom is an A00G so if you ever flash back your stock rom from oft it will be A00G.

you may then be able to get dealer to update to A01G. But if your always running the oft tuned rom their is no point.

The oft will only ever let you load an A00G rom so yes you will need to edit the A00G version, always use the OFT definitions that come with the OFT tunes. Also OFT definitions and tunes must be matched if your using V1 tunes use V1 defs if your using V2 tunes use V2 oft defs.

[zAnSh1n]

Originally Posted by steve99

E85 Cold Start Injector Pulse Width mods

http://www.ft86club.com/forums/showp...1&postcount=40

i am having issues starting my car up in the morning and it usually takes about three tries for the engine to start up...

should i just copy those values in romraider to edit the rom i am using?

my car is an automatic...

[steve99]

Originally Posted by zAnSh1n

i am having issues starting my car up in the morning and it usually takes about three tries for the engine to start up...

should i just copy those values in romraider to edit the rom i am using?

my car is an automatic...

yes you should be able to just copy in malts adjustments for starting its same for auto or manual. if your on a V2 tune make sure use use the v2 defs that come with tune download

[zAnSh1n]

yes, i am using the v2.06 XMLs that i downloaded from the oft website...

i went ahead and changed all the values per Malt's post and saved as a new rom file in order to keep the original untouched; i just added a number 2 at the end of the file name... but when i went to save the .bin file, the romraider program prompted:

"One or more ROM image Checksums is invalid. Calculate new checksums?"

i clicked "No" and saved the file in order to keep all the values i have just made adjustments to... is this okay?

[steve99]

Originally Posted by zAnSh1n

yes, i am using the v2.06 XMLs that i downloaded from the oft website...

i went ahead and changed all the values per Malt's post and saved as a new rom file in order to keep the original untouched; i just added a number 2 at the end of the file name... but when i went to save the .bin file, the romraider program prompted:

"One or more ROM image Checksums is invalid. Calculate new checksums?"

i clicked "No" and saved the file in order to keep all the values i have just made adjustments to... is this okay?

If you have oft it does not matter about the checksums as the oft\ofm will calculate nad correct the checksum when rom is loaded. As lojg asxyou used v2 tune and v2 defs you will be ok.always check over you work just to be sure.