[tc535i]

Here in CA we don't get anything better than 91, and Burger suggests minimum 93 octane to run map 2. I have all the other requirements (basic FBO stuff), but I'm a little concerned about the octane requirement.

My question is, would I be ok running 91 on that map, or is 93 necessary to avoid pulling timing etc? And if I ran 2 gal e85 with my 91 for a ~93 octane result, would that be better than straight 91? or should e85 mixes only really be used with map 5?

[mike@x-ph.com]

Originally Posted by tc535i

Here in CA we don't get anything better than 91, and Burger suggests minimum 93 octane to run map 2. I have all the other requirements (basic FBO stuff), but I'm a little concerned about the octane requirement.

My question is, would I be ok running 91 on that map, or is 93 necessary to avoid pulling timing etc? And if I ran 2 gal e85 with my 91 for a ~93 octane result, would that be better than straight 91? or should e85 mixes only really be used with map 5?

You can run up to 35% e85 with any map no problem.
And although BMS says minimum 93 octane, map will work with 91 if you are FBO.

[tc535i]

I ran it for a bit on 91 and didn't see any codes, but I'm not set up to log yet so I couldn't actually monitor timing etc

so an e85 mix would be better than 91, right? or if I can run the map, it'll provide similar results regardless of octane potential?

[mike@x-ph.com]

Originally Posted by tc535i

I ran it for a bit on 91 and didn't see any codes, but I'm not set up to log yet so I couldn't actually monitor timing etc

so an e85 mix would be better than 91, right? or if I can run the map, it'll provide similar results regardless of octane potential?

If you add a little e85 ( dont add too much since your fuel scalar is set up for 91 and you will run lean) it provides protection against engine knock if the maps set up for higher grade fuel.

All you need is 15% e85 and you octane level with 91 will be similar to your octane level with 100% 93.

[tc535i]

Originally Posted by mike@x-ph.com

If you add a little e85 ( dont add too much since your fuel scalar is set up for 91 and you will run lean) it provides protection against engine knock if the maps set up for higher grade fuel.

All you need is 15% e85 and you octane level with 91 will be similar to your octane level with 100% 93.

yeah, I ran a calculator and 2g e85 with 14g 91 e10 puts me right around 93

can you explain what you mean by fuel scalar? do you mean the map is tuned for 91? isn't map 2 tuned for 93?

[mike@x-ph.com]

Originally Posted by tc535i

yeah, I ran a calculator and 2g e85 with 14g 91 e10 puts me right around 93

can you explain what you mean by fuel scalar? do you mean the map is tuned for 91? isn't map 2 tuned for 93?

Map 2 is tuned to 93 (or 91 however you want to think about it).
When you add a significant amount of e85 you need to change a table in the DME for fuel (called fuel scalar).
If you do not do that and you add a lot of e85 then you will run lean.
If you would like to run higher amount of e85 you have to get Cobb and stackit with Jb4.

[Bme30]

I ran 4gals e85 with 93oct and ran map 5.
i know you only have 91oct, but map 5 will auto tune for your mods and octane and give you the best power available.

[tc535i]

Originally Posted by mike@x-ph.com

Map 2 is tuned to 93 (or 91 however you want to think about it).
When you add a significant amount of e85 you need to change a table in the DME for fuel (called fuel scalar).
If you do not do that and you add a lot of e85 then you will run lean.
If you would like to run higher amount of e85 you have to get Cobb and stackit with Jb4.

Ah, so scalar has more to do with fuel volume/delivery than target octane... I think I get it. 93 octane e10 gas has same octane as the 2g e85/14g 91 oct e10 mix, but the mixture will need to flow more fuel even at the same octane... and if the computer isn't set up to know that, you'll underfuel and run into lean/knock conditions. Does that sound right?

I thought I can just upload a backend flash and run higher mixes with my jb4 map 5, you're saying I have to stack jb4 and Cobb? I've never heard that before...??

Thanks so much for all the help btw, I'm still getting a feel for the intercooler and charge pipe I got but pretty happy so far! Only issue is the hump hose between intercooler and charge pipe doesn't want to go on very far and it's tricky to get enough hose over the pipe bead to clamp properly. Any suggestions? I'm thinking maybe the alignment of the intercooler auxiliary pipe is clocked slightly askew, maybe I need to loosen from the bottom and move it slightly? Haven't had time to dig too deep, already popped the hose off once.

[mike@x-ph.com]

Originally Posted by tc535i

Ah, so scalar has more to do with fuel volume/delivery than target octane... I think I get it. 93 octane e10 gas has same octane as the 2g e85/14g 91 oct e10 mix, but the mixture will need to flow more fuel even at the same octane... and if the computer isn't set up to know that, you'll underfuel and run into lean/knock conditions. Does that sound right?

I thought I can just upload a backend flash and run higher mixes with my jb4 map 5, you're saying I have to stack jb4 and Cobb? I've never heard that before...??

Thanks so much for all the help btw, I'm still getting a feel for the intercooler and charge pipe I got but pretty happy so far! Only issue is the hump hose between intercooler and charge pipe doesn't want to go on very far and it's tricky to get enough hose over the pipe bead to clamp properly. Any suggestions? I'm thinking maybe the alignment of the intercooler auxiliary pipe is clocked slightly askew, maybe I need to loosen from the bottom and move it slightly? Haven't had time to dig too deep, already popped the hose off once.

Backend Flash,Cobb,Open Flash Tablet they are all terms that really mean the same thing.
You want to be able to access the DME Tables, the method you use to do that (cobb,,backend,open flash) is not important.
As for the intercooler you need to post some pics so we know exactly what is going on.

[tc535i]

Originally Posted by mike@x-ph.com

Backend Flash,Cobb,Open Flash Tablet they are all terms that really mean the same thing.
You want to be able to access the DME Tables, the method you use to do that (cobb,,backend,open flash) is not important.
As for the intercooler you need to post some pics so we know exactly what is going on.

well I can do a backend flash with a basic cable, right? pretty sure the cobb route would cost me a tiny bit more... lol

tried to take some pics but they were terrible lighting and hard to see

http://i168.photobucket.com/albums/u...ps4h6afjwc.jpg

http://i168.photobucket.com/albums/u...pscubogenu.jpg

you can see the pipe that connects to the intercooler is clocked about 10-15 degrees off of the charge pipe, and the hump hose isn't long enough to have much play. I managed to get it on, but it's offcenter and the clamp isn't really completely on the hose so I'm not really confident in it's current state.

I'm guessing if I loosen and rotate the pipe from below, lining it up straighter with the charge pipe will give me a little more hose length and a better connection. I assume I have to pull the bumper to make this adjustment, but the shop that installed it is 45 minutes each way, so I dunno if it's worth my time to take it back, or if I should just do it myself in the garage.

[mike@x-ph.com]

Originally Posted by tc535i

well I can do a backend flash with a basic cable, right? pretty sure the cobb route would cost me a tiny bit more... lol

tried to take some pics but they were terrible lighting and hard to see

http://i168.photobucket.com/albums/u...ps4h6afjwc.jpg

http://i168.photobucket.com/albums/u...pscubogenu.jpg

you can see the pipe that connects to the intercooler is clocked about 10-15 degrees off of the charge pipe, and the hump hose isn't long enough to have much play. I managed to get it on, but it's offcenter and the clamp isn't really completely on the hose so I'm not really confident in it's current state.

I'm guessing if I loosen and rotate the pipe from below, lining it up straighter with the charge pipe will give me a little more hose length and a better connection. I assume I have to pull the bumper to make this adjustment, but the shop that installed it is 45 minutes each way, so I dunno if it's worth my time to take it back, or if I should just do it myself in the garage.

Yea you can do the same with the BT cable too.
Yea i would make sure it is completlely on the hose, i had one customer purchase from me 2 intercooler in the same week because it got loose and he ended up damaging the FMIC and his car.