Topic: who needs a big turbo when you have e85 :-)

[2.0 tspeed]

heres some of the official list on cobaltss.net
come on guys we need to step up and start matching these numbers lolz

2.0 T/C Stock Turbo
1. 09whteSSpssssh 366.5whp, 445wtq Verified DYNOmite CP/CD/DP/E/I/IC/E47/HPT Only Graph 1 Graph 2
2. raver0789 359whp, 408wtq Dynojet I/CP/IC/DP/CB/E47 Graph
3. FF_ace 351whp, 393wtq Verified Dynojet CAI/CP/IC/DP/CD/E/WI/E85/T Graph
4. Cavalierssr 350whp, 439wtq Verfied Dynojet I/DP/CD/CP/MD/T/E85 Graph
5. BYT*SS*TURBO 347whp, 414wtq Verified Dynojet, DP/CD/CP/I/T/IC Graph
6. 2010SS 346whp, 426wtq Verified Dynojet DP/IC/I/CP/E85/BYT Tune Graph

[SKY888]

big turbo + e85 is better

540whp

[snaponbob]

Well, from personal experience this weekend racing in Lincoln Neb, the E85 tune is blindingly unit about 6000 rpm when it starts starving for fuel, and eventually, at the end of the car's sixth run today, it went into limp going into the final turn for the finish. My co-driver had the same starvation problems, but his driving has way better than mine, and he crushed the class.  

Already left Vince a message. Asked about softening the tune from 5800 up to 7k to lower the demand for fuel.

[SKY888]

bob, if you need my walbro unit, lemme know!

[Brazen17]

While we are at it how about a big v8 with E85 and twin turbo?!? 

I am seriously contemplating this E85 tune. The numbers are almost unreal. It would have to wait until Feb/Mar however. It will either be the E85 tune or the standard Trifecta tune. Decisions, decisions...

[snaponbob]

While we are at it how about a big v8 with E85 and twin turbo?!? 

I am seriously contemplating this E85 tune. The numbers are almost unreal. It would have to wait until Feb/Mar however. It will either be the E85 tune or the standard Trifecta tune. Decisions, decisions...

My car will almost NOT start in sub 45 degree conditions after it sits overnight. Not uncommon on other non-E85 cars that have been tuned to E85 - not just Kappas.

[SKY888]

Members should consider the "negatives" of running full E85.  Hard starts and no starts at all during  colder weather.   

If you're living in warmer locations....then you're in luck.

Plus of course the change of mixture of E85 thru-out the season makes it also complicated.  For your ECM tuning.

Anyways,   most of the E85 pioneers in CSS and HPtuner forums....are happy with 50-50 mix (93 octane and E85)

[Brazen17]

My car will almost NOT start in sub 45 degree conditions after it sits overnight. Not uncommon on other non-E85 cars that have been tuned to E85 - not just Kappas.

That is not good to hear. I was under the impression that it was a problem more related to the Cobalt (although that doesn't entirely make sense) than anything else but perhaps not. On the other hand we don't have to many sub 45 degree days! And I usually drive the Tahoe on those days. I have some time to follow along those who convert to the E85 tune so I will have a better idea before I am ready to pull the trigger.

[snaponbob]

Members should consider the "negatives" of running full E85.  Hard starts and no starts at all during  colder weather.  

If you're living in warmer locations....then you're in luck.

Plus of course the change of mixture of E85 thru-out the season makes it also complicated.  For your ECM tuning.

Anyways,   most of the E85 pioneers in CSS and HPtuner forums....are happy with 50-50 mix (93 octane and E85)

Any power output results on that mix?

[Brazen17]

Members should consider the "negatives" of running full E85.  Hard starts and no starts at all during  colder weather.  

If you're living in warmer locations....then you're in luck.

Plus of course the change of mixture of E85 thru-out the season makes it also complicated.  For your ECM tuning.

Anyways,   most of the E85 pioneers in CSS and HPtuner forums....are happy with 50-50 mix (93 octane and E85)

Living in Las Vegas gives me a bit of an edge on the cold weather issues but a 50/50 mix could be interesting too. Like SOB said, what kind of results are they getting with a mix?

Also how finicky would it be as far as being consistent in getting the mix "just right". In other words would a 45/55 mix cause any problems?

[SKY888]

if you don't have E85 station nearby.............and planning to store 55 gallon drum of E85............try to consider the shelf life  


60-90 days for most experts from E85 forum

[SKY888]

Any power output results on that mix?

According to their HPT logs..........same amount of spool time....as well as power output.

so most are just using 50-50 mix

[SKY888]

Living in Las Vegas gives me a bit of an edge on the cold weather issues but a 50/50 mix could be interesting too. Like SOB said, what kind of results are they getting with a mix?

Also how finicky would it be as far as being consistent in getting the mix "just right". In other words would a 45/55 mix cause any problems?

here in the East coast, I believe that the mix of E85 from gas stations changes from season to season.    And the E85 owner doesn't even know what the exact mix he receives.......which truly bothers me big time

[SKY888]

consistency of the mixture, might be the biggest challenge of E85 users....especially if they have no idea what mixture their getting......and they're pushing their engines

[2.0 tspeed]

Good thing I live in Florida, Amd I know what months the mixtures change and it's not many

[Brazen17]

If I were to go with the 50/50 tune I would like to shoot for about the middle of the Trifecta tune and the e85 tune (say 355'ish). There are quite a few places in Vegas to get e85 so storing it won't be an issue. More important to me would be how close to 50/50 does it have to be.

[SKY888]

If I were to go with the 50/50 tune I would like to shoot for about the middle of the Trifecta tune and the e85 tune (say 355'ish). There are quite a few places in Vegas to get e85 so storing it won't be an issue. More important to me would be how close to 50/50 does it have to be.

gotta talk to Vince about the closeness to 50/50 mix you should have.

I think with his tune he'll make sure that it has a good safety parameter ...just in case you get more of one mix compared to other.

but just double check with Vince.

[snaponbob]

Speaking of mixing E85 ------------  http://www.zzperformance.com/cobalt_ion/articles1.php?id=72

[snaponbob]

According to their HPT logs..........same amount of spool time....as well as power output.

so most are just using 50-50 mix

How can an HPT log indicate the amount of power hitting the ground?

[Brazen17]

Speaking of mixing E85 ------------  http://www.zzperformance.com/cobalt_ion/articles1.php?id=72

Beginning to sound like it might be more trouble than it's worth...I don't want to have to play chemist just to drive  the car.   

[SKY888]

Beginning to sound like it might be more trouble than it's worth...I don't want to have to play chemist just to drive  the car.   

that's why I brought it up on my earlier post.

[SKY888]

How can an HPT log indicate the amount of power hitting the ground?

no power to the ground info.

they're just able to advance timing and put more boost............getting more lb/min

Im hoping that they're really getting more power ...........not being on a dyno to show whp

[kennysabarese]

To stay on topic I'm going to tell you why big turbo instead of E85

1) When you solve the fuel delivery problems, your power and torque curves will look identical to the stock turbo gas tunes, aka you will still run out of power around 5,500
2) I can't get E85 at a station near me

[SKY888]

its very beneficial if there are E85 gas stations in your area.

But if not, it will be a hassle.


I have one in Boston, MA which is about 45 mins away from where I live.

The mixture consistency is a concern as well as travel time hassle.

if im not getting E85 to fill up my secondary fuel tank........................I'll get c16.  Even if its alot more expensive, the ease of getting C16, as well as perfect consistency of mixture........will be worth it for me

[kennysabarese]

anyone have a comparison between race gas and the corn?