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Old Jul 1, 2011, 12:39 AM
  #151  
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Here's my as yet untested launch map:

Old Jul 1, 2011, 01:29 AM
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^^

just to compare, what's the fueling look like ? I have 10.5's with -5 timing @ 5000
Old Jul 1, 2011, 09:04 PM
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how much boost do you build per negative degree of timing? for 5500 for mine im making 7 pounds of boost with 6 to 9 degrees taking in consideration that 140-170 load is around 7 pounds
Old Jul 2, 2011, 06:23 PM
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I was building ~15lbs with the map I posted up. My fueling map isn't too dissimilar from my normal drive map, other than being a few points richer in the appropriate cells.
Old Jul 3, 2011, 07:15 AM
  #155  
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any recommendations on target AFR for launching?

I'm guessing same as target AFR at WOT per launch RPM but hoping anyone testing something different could offer up some suggestions....
Old Jul 3, 2011, 08:24 AM
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Originally Posted by mchristian
any recommendations on target AFR for launching?

I'm guessing same as target AFR at WOT per launch RPM but hoping anyone testing something different could offer up some suggestions....
well at 2 step you dont see any afrs, but when launching you want some torque to keep the motor from bogging down, keep your afrs around 12.5-12 and as soon as you see the rpms start increasing besides slowly going up lower your afrs slowly from 11.9 to 11.3 to keep the temps down and to keep your horsepower going up, plus the 2 step will build up some serious heat for you evo guys
Old Jul 3, 2011, 02:22 PM
  #157  
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Originally Posted by mchristian
Any updates on the possibility to use launch maps as anti-lag in-between shifts?
It couldn't work like that. Rally style anti lag is designed with a mechanical air pump system in conjunction. There is no way to do it simply by having timing retarded and fuel added when shifting because its just going to run like ***.

Originally Posted by steven121
how much boost do yall make when stepping before launching? I only can get to 7 I would like to get to 10 pounds but I dont know if you lower timing or increase it at the point of the limiter.

Also I know this is really flamer for me to ask but how can I create the bang noise with a little flame without meth? I like it because it sounds really aggressive. But I was just curious. Do I just keep adding fuel into that table until it does what I want?
You can make as much as you want. Having enough fuel and then retarding timing till the desired effect is reached is key as mentioned by someone.

Originally Posted by steven121
ok gotcha im using the stock tephra fuel map so im assuming that is rich as well and my timing is around 4-5 degrees. Im going to lower it tonight to make more boost and then add more fuel for the bang effect and a little bit of flames

also I have 880 cc injectors I got them at %50 percent right now, how much more power can I make with them before they need to be upgraded? Im currently at 230-250hp right now. Im thinking there good until 350 right?
880's are usually good for 400-500whp on VD depending on fuel used and your fuel pump.
Old Jul 8, 2011, 06:39 AM
  #158  
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Originally Posted by 06MREvo
I am currently not using launch maps and I cut pretty consistant low 1.7 - low 1.6 60 fts on street tires. Obviously if I am not using launch maps I am not building any boost off the line & I am launching at 0 psi. If I setup a launch map to have me build say between 8-12psi on the line how would this help with my 1/4 mile times?? I don't see this helping my 60 fts at all, if anything maybe make them worse due to spinning more off the line. I am assuming if I was still able to cut 1.6 60 fts while using a launch map at 10psi or so this would help lower my 330 time, correct?? If my 330 time is faster then my overall 1/4 mile ET & MPH should be as well. From mid 300whp to mid 400whp I have been able to cut the same 60 fts without launch maps & I want to make sure that if I decided to spend the time setting one up that it would benefit me. I also want to make sure I won't have to change how I launch my car because of now launching with boost. I run an unsprung 6 puck clutch so there is only so much I can slip the clutch. I preload her as far as she will go then let her rip & that is how I have done it for 40k miles. Any feedback on this would be appreciated!!
Originally Posted by 06MREvo
Yeah I know it used to mainly be used with big turbos to get them spooled before the lights dropped but it seems that a lot of people with stock frame/stock turbos are using it now also. My 2 step is set between 6150-6200 and I am happy with that right now as it seemed to work well with my setup and help me cut a 1.64 60 ft this past weekend. But if it will also help lower my overall ET & up my MPH then I am willing to try it out. I was just wondering if anyone was in a similar situation to me with cutting good 60 fts with no launch maps and tried it and it actually helped them run faster...

Anyone else have an option on this?? Once I throw my new lifters in I was thinking about working on a launch map but don't want to waste my time if it won't help me since I already cut 1.6 60 fts...
Old Jul 8, 2011, 09:22 AM
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Originally Posted by 06MREvo
Anyone else have an option on this?? Once I throw my new lifters in I was thinking about working on a launch map but don't want to waste my time if it won't help me since I already cut 1.6 60 fts...
If you're cutting 1.6s 60's with your current map, I don't think launch maps will help you very much. They're mostly to help folks with huge turbos build more boost off the line.
Old Jul 11, 2011, 08:46 AM
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Originally Posted by Raptord
If you're cutting 1.6s 60's with your current map, I don't think launch maps will help you very much. They're mostly to help folks with huge turbos build more boost off the line.
Figured that...thanks...
Old Aug 29, 2011, 05:19 AM
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I get black cloud of smoke when hitting launc map, what changes should I make to get some flames from the exhaust ?
boosting ~0.9 bar @5000 rpm, 10.5 afr with -5 timing in the launch map.
should I add more fuel, or retard timing more ?

Last edited by stunt2; Aug 31, 2011 at 01:48 PM.
Old Aug 31, 2011, 10:50 AM
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Originally Posted by stunt2
I get black clud of smoke when hitting launc map, what chenges should I make to get some flames from the exhaust ?
boosting ~0.9 bar @5000 rpm, 10.5 afr with -5 timing in the launch map.
should I add more fuel, or retard timing more ?
would also like to know this
Old Aug 31, 2011, 02:47 PM
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Pulling more timing should get you the flames you're looking for.
Old Aug 31, 2011, 02:55 PM
  #164  
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Originally Posted by Raptord
Pulling more timing should get you the flames you're looking for.
Is there a downside to this? Is it bad for anything?
Old Aug 31, 2011, 03:03 PM
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If you have a cat, back-fires like you're looking for will destroy it pretty quick. More importantly, the increased EGT of having combustion taking place in the engine AND in the exhaust can decrease the lifespan of the turbo.


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