A/F question? - ClubSi

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#2435506 - 03/14/08 12:21 AM A/F question?
HabaneroSedan HabaneroSedan Sr Member Registered: 01/30/07 Posts: 1238 Loc: Phoenix, AZ	so i have a ct-engineering (new comptech) supercharger on my 07 FA5. hit the dyno today and the shop i was at got scared by the a/f ration and didn't want to do another run. a/f was 12.9 - 13.2 and unfortunatley there is no ems for these cars yet so im stuck with the hondata/ct reflash for now. is this way to lean? am i asking for problems? i have a pdf of the run before they pulled of at 7600, but i'm not sure how to post a pdf? help please. _________________________ 2007 Civic Si Sedan: 10psi Supercharged
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#2435661 - 03/14/08 01:58 AM Re: A/F question? [Re: HabaneroSedan]
SamuraiSam SamuraiSam Post Master Sr Registered: 07/29/02 Posts: 8828 Loc: Bellingham, WA	That AF ratio depends on the power level. It would be fine at lower power levels and not OK at higher ones. Some 'tuners' really like super rich mixtures because they feel that it is safe, they are usually wrong. Regarding the PDF, there's no way to embed it on this forum. You'll have to either host it on a website and link to it, or convert it to an image file. If you can't convert it, just do a screen capture. If all of that sounds like jibberish, send me an email samhi.si@gmail.com and I'll do it for you _________________________ Working and living the dream in post-prohibition Washington State
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#2442614 - 03/16/08 12:41 PM Re: A/F question? [Re: SamuraiSam]
HabaneroSedan HabaneroSedan Sr Member Registered: 01/30/07 Posts: 1238 Loc: Phoenix, AZ	im having a wideband installed monday to see whats really up. if it is lean as well, im gonna get on the phone with hondata and find out whats wrong with my map. _________________________ 2007 Civic Si Sedan: 10psi Supercharged
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#2443869 - 03/16/08 09:41 PM Re: A/F question? [Re: HabaneroSedan]
cua0 cua0 Post Master Supreme Registered: 02/04/01 Posts: 17270 Loc: Red Deer, Alberta, Canada	whats a FA5? _________________________
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#2443886 - 03/16/08 09:47 PM Re: A/F question? [Re: cua0]
HabaneroSedan HabaneroSedan Sr Member Registered: 01/30/07 Posts: 1238 Loc: Phoenix, AZ	Originally Posted By: cua0 whats a FA5? 4 door si _________________________ 2007 Civic Si Sedan: 10psi Supercharged
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#2446323 - 03/17/08 03:00 PM Re: A/F question? [Re: HabaneroSedan]
PurduinaSi PurduinaSi Post Master Sr Registered: 04/16/04 Posts: 7857 Loc: Westchester, NY	Try and get that PDF up here so we can help you better. Was that AF only that high during higher RPM's or across the board? 12.9-13.2 is pretty lean for WOT on a boosted vehicle, but its not absolutely horrible. In my experience, most shops just like to tune very conservatively so that if anything breaks, it cant be blamed on them. Was the Hondata reflash that you have on the car now meant for the Comptech blower or is that just the normal reflash that is also used on N/A Si's? Out of curiosity, what numbers did you put down? _________________________
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#2446396 - 03/17/08 03:20 PM Re: A/F question? [Re: PurduinaSi]
SamuraiSam SamuraiSam Post Master Sr Registered: 07/29/02 Posts: 8828 Loc: Bellingham, WA	At 250hp, your AFR is absolutely fine. _________________________ Working and living the dream in post-prohibition Washington State
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#2446429 - 03/17/08 03:25 PM Re: A/F question? [Re: SamuraiSam]
SiAdam SiAdam Post Master Supreme Registered: 07/22/01 Posts: 19309 Loc: USA	Yea..Sam's right..everything looks good. Nice curve.. Good practice to watch the a/f when you are going WOT as much as possible.. Never know if you hit some bad gas or an injector locks up on ya.. _________________________ 05 Berlina Black S2000 700whp / 500wtq Built, not bought.
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#2446923 - 03/17/08 05:33 PM Re: A/F question? [Re: SiAdam]
HabaneroSedan HabaneroSedan Sr Member Registered: 01/30/07 Posts: 1238 Loc: Phoenix, AZ	so you guys really think it's fine? i have been hearing that it's way to lean to drive. i'm thinking about aem fic to gas it up a bit, but if im really ok then i'll just wait for a k-pro. i got a UEGO today and i'll hook it up some time this week to see where i'm really at. thanks for the help! _________________________ 2007 Civic Si Sedan: 10psi Supercharged
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#2476579 - 03/26/08 08:25 PM Re: A/F question? [Re: HabaneroSedan]
HabaneroSedan HabaneroSedan Sr Member Registered: 01/30/07 Posts: 1238 Loc: Phoenix, AZ	UEGO is running 12.1-12.6 at WOT. i'm good _________________________ 2007 Civic Si Sedan: 10psi Supercharged
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