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> Fuel Issues, SAFC II tunning
post Apr 10, 2009 - 6:59 PM
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94silverbullet

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For fuel I have the walboro 255 hp, the supra 440cc injectors and I'm tunning with the SAFCII. What size were the stock injectors? Why when I'm in low throttle loop (actually idling) and set the SAFC II to -50% am I still at 10.3 to 1 A/F ratio?
I brought it to get it tunned today and the guy wouldn't touch it because it will not even idle at above even an 11?
Please help me out; I need my car for daily driving in the summer and I will only have a week to work on it before I start my summer internship.
Thanks for the help,
Derek
 
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post Apr 11, 2009 - 6:31 PM
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hurley97



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d0w0rks0n, your problem is because 460cc injectors are WAYY too big for the 7A. The stock injector size IIRC is about 172cc or 192cc. Somewhere in the 300-400cc range is appropriate for the turbo 7A, anything more than 400cc is going to be very hard to tune properly. My 315s were ok with the SAFC, once I moved to the 370cc injectors I couldn't tune it right with the SAFC and had to upgrade that as well.

As for the original poster, I have no idea what engine you're talking about but if its also a 7AFTE then your injectors are too big also, if its a 5SFTE the size is ok and its probably an issue with your method of fuel management and/or something not hooked up right or something, any other engine, I have no idea.


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7A-FTE: It's not about the money. Our Beams Swap.

I <3 Dustin---07/16/06

Posts in this topic
- 94silverbullet   Fuel Issues   Apr 10, 2009 - 6:59 PM
- - d0w0rkS0n   its teh same with me. i went even bigger and got ...   Apr 11, 2009 - 5:32 PM
|- - presure2   QUOTE (d0w0rkS0n @ Apr 11, 2009 - 5...   Jun 8, 2009 - 7:11 AM
- - hurley97   d0w0rks0n, your problem is because 460cc injectors...   Apr 11, 2009 - 6:31 PM
- - d0w0rkS0n   QUOTE (hurley97 @ Apr 11, 2009 - 7:3...   Apr 11, 2009 - 11:50 PM
- - _Jim_   If you are talking 5sfte, it sounds like your map ...   Apr 12, 2009 - 12:11 AM
|- - 94silverbullet   QUOTE (_Jim_ @ Apr 12, 2009 - 1:11 A...   Jun 7, 2009 - 3:33 PM
|- - laff09   QUOTE (94silverbullet @ Jun 7, 2009 - 3...   Jun 9, 2009 - 6:02 PM
|- - 94silverbullet   QUOTE Not a 7afte. read people. That's what I...   Jun 15, 2009 - 10:30 PM
- - FunkySR   460 is overkill. I'm still running 315's o...   Jun 9, 2009 - 5:35 PM
- - presure2   i know you have a 5s, my earlier post was directed...   Jun 16, 2009 - 7:13 AM
- - Consynx   What Manny said I hope you are also giving your ...   Jun 16, 2009 - 9:51 AM
- - Smaay   the non turbo Supra 440 should be high impeadance....   Jun 16, 2009 - 3:58 PM
- - Consynx   i know the 550s are low, and the 1jz 380ccs are hi...   Jun 17, 2009 - 11:20 PM
- - 94silverbullet   I know its been a while, but I finally got a multi...   Jul 19, 2009 - 7:10 PM
|- - presure2   QUOTE (94silverbullet @ Jul 19, 2009 - 7...   Jul 20, 2009 - 7:56 AM
|- - qatar11   QUOTE (94silverbullet @ Jul 19, 2009 - 8...   Jul 20, 2009 - 10:33 AM
- - boosted185   QUOTE (presure2 @ Jul 20, 2009 - 7:5...   Jul 20, 2009 - 6:35 PM
- - 94silverbullet   QUOTE MANNY- Yeah, the Honda guys wire in a resist...   Jul 21, 2009 - 11:28 AM
- - boosted185   QUOTE (94silverbullet @ Jul 21, 2009 - 1...   Jul 21, 2009 - 11:51 AM
- - 94silverbullet   Honestly that is what I think I'll end up doin...   Jul 21, 2009 - 3:05 PM


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