Thanks for the heads up. I'm going to be switching the vaccum lines to 3an or 4an in the future. Pricey but better than replacing parts or risking something failing.

Ok guys took the car out back at wastegate pressure. My engine responded best in the mid to low 11s afr. Anything higher and id notice 1 raw count here and there. My flex fuel sensor is showing 67 for ethanol content. This is ny pump e85. Another funny thing is, it took 4 jugs of c16 to ruin my o2 and wideband sensor. I ordered new ones last week in anticipation for it, get in my car and sure enough my wideband failed. Thankfully I was smart enough to have an extra. I have some ignite 114 coming i.e. E100.... no more leaded gas for this guy. I also ran out of e85, I went through 10 gallons like it's nothing. I'll post my log in a bit.

Purchased a turbo blanket

amsrn13 said:

I also ran out of e85, I went through 10 gallons like it's nothing.

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It goes quick , I think I get 18mpg or so in the dsm. Not babying it, but not beating on it either. My Nova is in the single digits for ethanol mpg!

heres one

another

My car has always shown .4 or .7 degrees of knock, or about 1 or 2 counts raw knock, even if I turn the timing very low or the boost way down to wastegate pressure, does not matter if it is on gas or ethanol. In my case I do not believe it to be actual combustion related knock, and never worry about any knock counts unless it is over 1 degree timing pull when running e85.

Still can't believe how fast c16 killed my sensors. Both my narrow band and wideband died at the same time, same day . C16 is amazing fuel but I'm not rich and can't buy new o2 sensors every 2-3 months

Taking a trip as we speak with like 10 5 jug cans for corn juice

25 gallons of e85 for 70 bucks vs 189 for 10 gallons of c16 ... hmmmm?

Bedford hills ny, 20 min from Danbury ct.... last test was e70

amsrn13 said:

25 gallons of e85 for 70 bucks vs 189 for 10 gallons of c16 ... hmmmm?

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I just got 10 gallons for 2.19/gal to replenish my "home" refueling station . I know your gonna love runnin it. My setup allows me 21* timing up to 8500 but still needs tuning work. On close to 40 lbs. Good job man, keep it up and your results! My latest fuel % was 68% but the car still works with it
I understand creeping up on your timing which is the right thing to do. It will probably like a little more. I'm on 10:1 CR.

1990TSIAWDTALON said:

I just got 10 gallons for 2.19/gal to replenish my "home" refueling station . I know your gonna love runnin it. My setup allows me 21* timing up to 8500 but still needs tuning work. On close to 40 lbs. Good job man, keep it up and your results! My latest fuel % was 68% but the car still works with it
I understand creeping up on your timing which is the right thing to do. It will probably like a little more. I'm on 10:1 CR.

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My flex fuel sensor is registering 68-69%, my engine likes to be in the low to mid 11's for afr.....I took it out on 20-21 lbs and ripped it.... cars estimating around 370-400hp which falls in line with the airflow I'm making. Car feels like it needs more air.....ie more boost.... way more boost. I'm just worried about blowing my headgasket. After blowing the last two.... I lost faith. Hopefully I'll have better luck with this mls

Only for reference, I have 10:1, Cometic MLS Copper Coated with L19's torqued to 110. Accidentally saw 44 lbs for a bit i one log so turned it back down to just under 40. Now working on making it work all the way to 8500. Have seen 8940 but never 9000 yet. HX 40 T3 .70 Vband 3" and a cutout.

1990TSIAWDTALON said:

Only for reference, I have 10:1, Cometic MLS Copper Coated with L19's torqued to 110. Accidentally saw 44 lbs for a bit i one log so turned it back down to just under 40. Now working on making it work all the way to 8500. Have seen 8940 but never 9000 yet. HX 40 T3 .70 Vband 3" and a cutout.

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Your running 40psi of boost? At the compression? What injectors and pump Are u running

340 Aeromotive and 1650 FIC's. It runs 21* up top, so you see, every setup works out differerent. But I think you still have more potential.

1990TSIAWDTALON said:

340 Aeromotive and 1650 FIC's. It runs 21* up top, so you see, every setup works out differerent. But I think you still have more potential.

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If you don't mind, At 40psi what dc are your 1650s at? I'm wondering wether or not the 1650's enough for me thanks.

I am in the high 80's. I have a set of 1800's, brand new, in case it is wanting more fuel but so far so good.

1990TSIAWDTALON said:

I am in the high 80's. I have a set of 1800's, brand new, in case it is wanting more fuel but so far so good.

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What settings are your running for the injectors? im at like -67 global and

1990TSIAWDTALON said:

I am in the high 80's. I have a set of 1800's, brand new, in case it is wanting more fuel but so far so good.

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Whats strange is that the global calculator is telling me to run -57, what actually works the best is -67 , my deadtime is like 228 give or take. At 20 psi this keeps me mid 11's for afr

The calculator and my injectors didn't really agree either. With E85 always for the last 2 years my Low Z 1650's (yeh low z) are at -51.2 with DT at 330 when the calculator says -59 and I still play with DT and have had it in high 400's. Now I admit that is going to skew numbers on DC and many other small things, but the fact is the CAR likes it. I have sat in it when it wouldn't even start and played with it until it did then adjusted from there. Its a beast but I am not a pro tuner I just play with my car. Its a lot easier to sit in it and adjust things and see how it feels than it is to go with set figures. I still need help myself, I just haven't asked yet I hope this helps at least a little.

1990TSIAWDTALON said:

The calculator and my injectors didn't really agree either. With E85 always for the last 2 years my Low Z 1650's (yeh low z) are at -51.2 with DT at 330 when the calculator says -59 and I still play with DT and have had it in high 400's. Now I admit that is going to skew numbers on DC and many other small things, but the fact is the CAR likes it. I have sat in it when it wouldn't even start and played with it until it did then adjusted from there. Its a beast but I am not a pro tuner I just play with my car. Its a lot easier to sit in it and adjust things and see how it feels than it is to go with set figures. I still need help myself, I just haven't asked yet I hope this helps at least a little.

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What ive been doing is , say i turn up the boost, i do a pull wot and watch the afrs, if the afrs collectively are rich for example I add to the global. So ill go from -67 to -67.5 and go for another pull. If the afrs are better and really close. I go in to the sd table and add or subtract airflow until the predicted afr and actual line up. is this the way it should be done?

You'll know when global fuel is right when your SD table reads right at 100% at peak VE. If it's more or less, your global fuel needs to be adjusted.

If your peak VE is over 100% in your SD table, you need to add fuel via global, if it's under 100%, you need to subtract fuel via global.

If it's right at 100%, then tweak the SD table until your WBO2 lines up perfectly.

GST with PSI said:

You'll know when global fuel is right when your SD table reads right at 100% at peak VE. If it's more or less, your global fuel needs to be adjusted.

If your peak VE is over 100% in your SD table, you need to add fuel via global, if it's under 100%, you need to subtract fuel via global.

If it's right at 100%, then tweak the SD table until your WBO2 lines up perfectly.

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Ok so looking at my log in the sd table in the 4500 column 31.2 to 40.4 is over 100% this mean I need to add fuel ie, lower my global exp. 67.1 to 66.9 etc

Can't say, there's not a decent 3rd gear pull in the log above.

It's pretty simple to do on your own. Using a 3rd gear pull, determine where your peak VE should be in the graph. Then, using the graph tracking feature, pinpoint that peak VE area in the SD table. In those cells, you should be at around 100%.

Obviously, your engine may not actually be operating right at 100% VE, however, shooting for 100% VE allows you to have a consistent reference point to tune your fuel settings from/with. The car will run the same if your VE is over or under 100%, so long as your global is dialed in correctly. Some people would say it doesn't matter how your VE tables looks, but I think it's easier to dial in the car when the tables and values are properly scaled...Not to mention, the car will typically run smoother when the table is smooth and properly scaled.

I need to subtract fuel in my case then, as my VE's never reach 100 only real low 90's or high 80's. I was hoping you had advice, thanks Brett!!! Where will I know my peak VE's should be? It reaches its highest HP and torque around 6800 but keeps on going, although tapering off, to 82-8500. I'm just learning too. I've been wanting to ask for some help, just stubborn.