Newbie help EFI

Sep 17, 2008
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Racine,WI
Newbie to efi im looking to add a little more zip to a tow tune i got off DP can anyone help me with keeping the smoothness and driveability but adding some more fuel it seems to be a little flat as soon as boost is built . Thx
 

Mike

hmmm....
Feb 17, 2007
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San Angelo, TX
Try and cut a little boost in small increments. See if power goes up. Maybe you're wasting a little too much fuel building boost?
 

sweetdiesel

That's better
Aug 6, 2006
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Thailand
You don't need 30 psi go back down 27,28 tops


X2 Unless the vane table have been changed your drive pressure is probably throught he roof;)

you will probably gain power by loosing some boost.


the boost table take your baro into account.....reduce this number in the 50 ish mm3 and 1200-1400 rpm range up to the 100mm3 and 4000 rpm range.
 
Sep 17, 2008
338
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38
Racine,WI
The vane tables were changed . This is bobos starter tune off the dp . Im as green as they come just got efi three days ago . Do i change all the boost tables A,B and C ?
 

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
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ZEPHYRHILLS, FL
Have you tried the 20/20 yet? I'm running it in a modified form on my LB7 and am VERY happy with it. It's very linear and drives well if you keep it stock below 40MM3.
 

Dozerboy

Well-known member
Jun 23, 2009
4,896
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TX of course
The vane tables were changed . This is bobos starter tune off the dp . Im as green as they come just got efi three days ago . Do i change all the boost tables A,B and C ?

Yes all your boost tables should match just be a few PIS apart. Build your boost table for your alt. most likely low. Look at your stock tune in the top left corner all 3 table should be a few psi apart IIRC low is 14.5, med 7.5, and high is 4 or something like that. You want to keep that difference across the board on all 3 tables. So lets use those #s and say in low alt. the max in your table is 41.5 so in med your max should 34.5, and 31 in low.
 

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
3,890
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ZEPHYRHILLS, FL
Yep too much boost and you're just wasting your heat on spooling the turbo rather than pushing air through the engine to move it forward. And if you don't have enough fuel to build it your basically choking it off with a VVT I would think.
 
Sep 17, 2008
338
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38
Racine,WI
just did the 20/20 tune but for fueling tables i added 30% instead of 20% just took it for a drive but my boost levels are high . i do not have a boost modifiying device, could it be because i added 30% that my boost spike is almost 40 ! Should i tone down the boost scale ?
 
Sep 17, 2008
338
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38
Racine,WI
Well i put the boost scaling back to stock map all ok no boost spike drives smooth little smoke though . I think im gunna back off the fuel to get rid of the smoke and adj the boost scale a tiny bit to see how it goes . thx for in input guys .