My new car to test my lean burn chamber - Page 2 - Fuelly Forums

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Old 07-11-2010, 07:23 PM   #11
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Originally Posted by trmclaren View Post
Doing this with a DSM. Me my self i wouldnt do it. Plus a lean burn chamber turbo cars hate to be lean. It will start to detonate very bad. Please dont do this to a beautiful DSM
I'm running ECM LINK management. So when its in boost it runs off a boost table that I can control the A/F ratio and timing. On gasoline at 8psi I'm running 11.8 A/F. On E85 at 8psi I'm running 12.8 A/F.

What kind of DSM do you have?
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Old 07-11-2010, 07:25 PM   #12
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How do you figure?
On my last Talon a 93 AWD Tsi I got a personal best of 35mpg. So I should be able to do it again.
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Old 07-11-2010, 08:59 PM   #13
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So if an unmodded Talon got 35, a modded one getting 35 is a gain of 0%.
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Old 07-12-2010, 09:10 AM   #14
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So if an unmodded Talon got 35, a modded one getting 35 is a gain of 0%.
The first one was modded too. It had "DSMAP Engine Management" and my
1st gen lean burn chamber. It was also a 5 speed manual transmission.

The Talon I have now is a auto so it will somewhat harder to get better gas mileage. But I will have control over the TCU so I will be able to control shift points and line pressure.

The 75% increase is over stock.
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Old 07-12-2010, 08:14 PM   #15
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The first one was modded too. It had "DSMAP Engine Management" ...
Hey! I also use DSMap! Well actually I use a modified version of DSMap.
Actually I've hacked up the code so much it hardly resembles DSMap at all!
OK so I use Native Speed/Density.
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Old 07-13-2010, 08:39 AM   #16
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Hey! I also use DSMap! Well actually I use a modified version of DSMap.
Actually I've hacked up the code so much it hardly resembles DSMap at all!
OK so I use Native Speed/Density.
Cool another DSM Hacker.LOL

Have you messed with the DSM's TCU eprom's?
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Old 07-13-2010, 09:05 PM   #17
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Cool another DSM Hacker.LOL

Have you messed with the DSM's TCU eprom's?
No, both of my DSM's are manual. I read through the posts on the DSM-ECU list when they were disassembling the TCU and it's pretty cool! I thought it would be nice to alter the shift points so you could use up to 75% throttle and have it shift at 1500rpm, but when you go WOT it shifts at redline. I'm sure the transition would be unpredictable and feel weird, but it would be nice for FE. You're in an enviable position!
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