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Old 04-16-2013, 10:35 AM   #26
AkumaMotorsports
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Can't wait to see what it does with pure e85 not this e60-e70 mix u have going and getting a little more aggressive on the tune. There A lot left on the table with that e85 tune.
I would not say there is much more HP to be had up top. Keep in mind, we can only achieve power up to MBT with timing(which we are very close). The turbo is a limiting factor here...need a bigger one to really make some noise. The AFR will yield a bit more power up top though.

I agree, we can get a bit more Torque if he want to really stretch out the stock turbo. He will need an aftermarket MAP sensor to keep the boost in check. We could try and shoot for 3 more PSI, but we will still see a good taper...no fighting physics there

It really comes down to the owner. If he wants to max it out, I am all for it. I am 90% sure he wants a reliable DD in the 20PSI range for longevity reasons. Eithert way, we will support his set up 100%.

Thanks guys!

John
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Old 04-16-2013, 03:59 PM   #27
rswagon609
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John is right, I asked for a nice safe tune around 20 psi. I would like to be able to drive the car without worrying about breaking anything. I'm sure ill be bitten by the 'more power bug' again, and when that time comes ill get a bigger turbo. For now, I'm happy with my new power. I hope to get the car down to the track next week. Ill be sure to let everyone know how I do!
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Old 04-16-2013, 10:00 PM   #28
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rswagon609,

Glad you are happy with the power and tune! Customer satisfaction is #1 @ Akuma!

-Dave
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Old 04-16-2013, 10:49 PM   #29
manitou
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I've just read through this thread and it sounds like it's safe yet making good power! I'm curious why you didn't just drain the tank of the pump gas using the firewall connections and then fill it with E85 and tune to that?
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Old 04-17-2013, 11:18 AM   #30
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Originally Posted by manitou View Post
I've just read through this thread and it sounds like it's safe yet making good power! I'm curious why you didn't just drain the tank of the pump gas using the firewall connections and then fill it with E85 and tune to that?
Id assume because in reality if your switching back and forth from pump gas to e85 this is a more realistic way to just get the pump gas tank really low and then add in the E. Hes not gonna want to have to empty the tank through the firewall EVERY time he wants to switch maps and gases. This way his tune will match exactly what is in the tank. Im just guessing though. Thats what i would do myself.

Last edited by Slimsti; 04-17-2013 at 11:25 AM.
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Old 04-17-2013, 11:28 AM   #31
manitou
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Originally Posted by Slimsti View Post
Id assume because in reality if your switching back and forth from pump gas to e85 this is a more realistic to just get the pump gas tank really low and then add in the E. Hes not gonna want to have to empty the tank through the firewall EVERY time he wants to switch maps and gases. This way his tune will match exactly what is in the tank. Im just guessing though. Thats what i would do myself.
It's not quite as critical going from E85 back to pump gas but it could be more critical going from the pump gas tune to the E85 tune. One way to do it is have a 5 gallon gas container full of E85 and run the car out of 93 pump gas, then empty the E85 into the tank and then re-flash in your E85 map!

A lot of tuners like to empty the pump gas and then put the E85 in before tuning to that fuel. It's probably not as critical if your tuning is more conservative.
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Old 04-17-2013, 12:02 PM   #32
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Originally Posted by rswagon609 View Post
I would like to be able to drive the car without worrying about breaking anything.
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Originally Posted by rswagon609 View Post
I hope to get the car down to the track next week.
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Old 04-17-2013, 12:20 PM   #33
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Originally Posted by manitou View Post
It's not quite as critical going from E85 back to pump gas but it could be more critical going from the pump gas tune to the E85 tune. One way to do it is have a 5 gallon gas container full of E85 and run the car out of 93 pump gas, then empty the E85 into the tank and then re-flash in your E85 map!

A lot of tuners like to empty the pump gas and then put the E85 in before tuning to that fuel. It's probably not as critical if your tuning is more conservative.
We have always run the cars down to a 1/4-1/8th tank or less if possible. then cycle the car in test mode with a hose connected too the fuel return hose under the hood. just let too cycle till it gets close too no fuel is pumped out.

I dont like too let to go till all the fuel is out and the hose is not pumping anything out because i running the pump dry can be good for it.
This should leave less then a 1/4-1/2 gallon left in the system. now put 5-10+ gallons of E85 or what ever your running in and your good too go.

Ian,
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Old 04-17-2013, 12:53 PM   #34
AkumaMotorsports
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Agreed on all fronts, there are many ways to do this. We did this the simplest way we could and satisfy the client’s needs.

-Dave
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Old 04-17-2013, 12:55 PM   #35
manitou
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Agreed, pretty much what I was saying, I did not mean run it dry, I just did not explain myself very well!
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Old 04-17-2013, 12:58 PM   #36
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Yep, thats what I assumed.
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Old 06-05-2013, 10:57 PM   #37
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So I finally got to the racetrack tonight. The weather was great and there was a ton of cars so I only got 2 passes in. On the first one I left the launch control on by accident and ended up running a 12.89@109. On my second pass I got off the line much better and ran a 12.38 at 111.43.
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Old 09-07-2013, 11:29 AM   #38
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Nice, hope all is still well with the car and everything is working.
-Dave
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Old 11-24-2013, 09:54 PM   #39
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My tuner installed two fuel drain maps on my Cobb AP. Also provided access to the fuel return line for me to connect a drain hose. Map runs the fuel pump 100% on idle.

Just switched from E85 to pump gas for the winter. Connected the drain hose. Switched to drain map. Idled car until fuel drain sputtered. Stopped engine. Switched map to pump. Added pump gas. Done!

Not too bad.

Last edited by BigTaco425; 11-24-2013 at 09:59 PM.
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Old 11-30-2013, 01:07 PM   #40
scaryjello
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This is awesome. Something that's not too crazy and is still fast. I plan on going this same route someday after my warranty is expired
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Old 12-07-2013, 01:57 AM   #41
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Originally Posted by BigTaco425 View Post
My tuner installed two fuel drain maps on my Cobb AP. Also provided access to the fuel return line for me to connect a drain hose. Map runs the fuel pump 100% on idle.

Just switched from E85 to pump gas for the winter. Connected the drain hose. Switched to drain map. Idled car until fuel drain sputtered. Stopped engine. Switched map to pump. Added pump gas. Done!

Not too bad.
that's a very cool idea! How quickly does it empty out the return line from say 1/4 tank ish?
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Old 12-08-2013, 11:53 AM   #42
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that's a very cool idea! How quickly does it empty out the return line from say 1/4 tank ish?
It's mostly about the convenience. 1/4 tank would probably be 7-10 minutes.
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