quickergixxer

what kinda of diff in a/f on say a 20 degree day compared to a 65 degree day

rtype11

air is denser in the cold, more 02, cars need more fuel, stock ecu takes care of this and maintains a/f, so none. think you can get like 6 percent more power with the temp diff you just gave, EFI university can prolly tell you exactly.

quickergixxer

we had a problem with my stock 02 so my hondata/ecu is ignoring it. i was just wondering if its going to run rich as **** when summer comes

Johnyquest

general rule of thumb:

every 10 degree F drop in temperature is a 1% increase in power output. That equates to a 30 hp difference from summer to winter on a 300hp engine where I live. 100* summers, 0* winters. It adds up.

Good luck.

ExVtec

agreed.

Muckman

iTrader: (2)

When does CT ever see 100* anything?

rtype11

if your o2 sensor is being ignored you are running a closed loop program, depends how much fuel is in the program, hopefully you have your air temp sensor hooked up so the AEM can add fuel that way atleast otherwise you may be leaning out. get it fixed before the summer! get it fixed now.

hey what gixxer do you have, I NEED PARTS, frame and fairing stay 02 and up 600/750

quickergixxer

if running closed loop program will it get worse gas mileage then open loop?

PHiZ

We get over 100 in the summer, not consistently, but yeah, summers in new england are gorgeous.

I think the key here is the IAT sensor, and how it's output is interpreted and acted upon.

-PHiZ

SJP0tato

From my experience using a motec wideband & zdyne for tuning, I have about a 7-10% fuel increase (sorry, this isn't entirely clear...I mean from 130% fueling to ~140% fueling, a change of maybe 4-5% overall) needed from our arizona 117 degree summer to mid 40's winter. Basically, the fuel settings I have for ~12.5 A:F ratio in summer goes up to around 13.4:1 in the cold weather. It seems to be enough that I bump up my fueling during the few cold months we get here just to be safe.

Ryan P.


Modified by SJP0tato at 2:42 PM 1/18/2004


Modified by SJP0tato at 2:44 PM 1/18/2004

quickergixxer

oh ya just the answer i was looking for thanks man


we did all or most wot tunning on the dyno and it was like 65 ish in there so that part should be cool but the part throtle stuff i might want to check when summer comes

agree??