ClubSi.com - The Club Si home page
Join in on a hot topic now! ClubSi Message Forums Todays Hot Topics Featured Members Rides ClubSi Store
A/F question? - ClubSi
ClubSi's Parts Store Today's News, Google & CSi
You are not logged in. [Log In] ClubSi » Forums » Performance Zone » Got Boost? » A/F question?
Register User       Forum List       Calendar       FAQ
Page 1 of 1 1
Topic Options
#2435506 - 03/14/08 12:21 AM A/F question?
HabaneroSedan Offline
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

Top
Visit Sponsors! Help CSi !
Sponsored Links
Member
*****
Top
#2435661 - 03/14/08 01:58 AM Re: A/F question? [Re: HabaneroSedan]
SamuraiSam Offline
Post Master Sr


Registered: 07/29/02
Posts: 7820
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
Top
#2442614 - 03/16/08 12:41 PM Re: A/F question? [Re: SamuraiSam]
HabaneroSedan Offline
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

Top
#2443869 - 03/16/08 09:41 PM Re: A/F question? [Re: HabaneroSedan]
cua0 Offline
Post Master Supreme


Registered: 02/04/01
Posts: 16448
Loc: Red Deer, Alberta, Canada
whats a FA5?
_________________________

Top
#2443886 - 03/16/08 09:47 PM Re: A/F question? [Re: cua0]
HabaneroSedan Offline
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

Top
#2446323 - 03/17/08 03:00 PM Re: A/F question? [Re: HabaneroSedan]
PurduinaSi Offline
Post Master Sr


Registered: 04/16/04
Posts: 7763
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?
_________________________



Top
#2446396 - 03/17/08 03:20 PM Re: A/F question? [Re: PurduinaSi]
SamuraiSam Offline
Post Master Sr


Registered: 07/29/02
Posts: 7820
Loc: Bellingham, WA



At 250hp, your AFR is absolutely fine.
Top
#2446429 - 03/17/08 03:25 PM Re: A/F question? [Re: SamuraiSam]
SiAdam Moderator Offline
Post Master Supreme


Registered: 07/22/01
Posts: 14994
Loc: West By God Virginia
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 509whp / 357wtq

Top
#2446923 - 03/17/08 05:33 PM Re: A/F question? [Re: SiAdam]
HabaneroSedan Offline
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

Top
#2476579 - 03/26/08 08:25 PM Re: A/F question? [Re: HabaneroSedan]
HabaneroSedan Offline
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

Top
Page 1 of 1 1


Moderator:  SiAdam 
Hop to:
My Cookies · Mark all read Powered by UBB.threads™ Contact Us · ClubSi · Top

ClubSi Parts Store | Auto Decals | Automotive Catalogs | Honda Civic Brakes | Import Performance | Cross Drilled & Slotted Rotors | ClubSi Ts, Decals etc.


Message Board Statistics