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Finally got it running right

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Old 12-27-2015, 08:12 PM
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eman930
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Thumbs up Finally got it running right

For those of you that don't know, I recently rebuilt my engine during the summer and have had many issues after, wrong Chip board, bad ECU, bad DME relay, vacuum leaks,fueling issues ect.. I think I finally have it sorted out, The 55lb injectors wouldn't run well with the A-tune software and was causing a no start along with Wild AFR, so currently I'm running stock injectors but was lean, I recently added an adjusted FPR and raised fuel pressure to about 45psi while running, this has fixed my fueling issue's for now, I now see 14.3-14.8 at idle when I was getting 15-15.2, under boost I'm around 12.5-12.8 before I was seeing 14.4-13 and at full pedal 18psi I'm at 11.2-10.8 depending on rpm. much better then before, I now feel safe to drive the car, I currently have 250 miles since rebuild. It's a beast and fun and responsive. After this winter I'd like to do some dyno pulls at see where I'm at, for now, I'll keep driving her until the snow comes.
Old 12-27-2015, 08:26 PM
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Humboldtgrin
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I would go under 12:1 AFR. That's when you start to loose power and may wash out the cylinders. 12:1 is rich best and 13:1 is lean best for power output. Above an below you loose power and will have other issues down the road.
Old 12-27-2015, 10:33 PM
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Rogue_Ant
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Originally Posted by Humboldtgrin
I wouldn't go under 12:1 AFR. That's when you start to loose power and may wash out the cylinders. 12:1 is rich best and 13:1 is lean best for power output. Above an below you loose power and will have other issues down the road.
13:1 on a turbo car is going to break things. 12:1 is fine, depending on fuel & boost pressure.
Mid-11's is a very typical good spot to be for full-boost. Compromise of safety and power.
I wouldn't worry about washing cylinders until you are below 10.0. Plenty of OEM turbo/supercharged cars run into the 10's on factory tunes.
Old 12-27-2015, 10:58 PM
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eman930
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Originally Posted by Rogue_Ant
13:1 on a turbo car is going to break things. 12:1 is fine, depending on fuel & boost pressure.
Mid-11's is a very typical good spot to be for full-boost. Compromise of safety and power.
I wouldn't worry about washing cylinders until you are below 10.0. Plenty of OEM turbo/supercharged cars run into the 10's on factory tunes.
I agree, I've been told by a lot of tuners that 12.5-11.5 is a good spot to be
Old 12-28-2015, 09:04 PM
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Glad to hear!
Old 12-30-2015, 09:00 AM
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Yeah....just in time for the snow!! Good to hear. I'll need to check out your car sometime......it will motivate me to drive mine again.



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