Stock H22 with RC550cc

deafy · Post by **deafy** » Thu Dec 14, 2006 8:13 pm

I tried the Stock H22 450cc calibration and its just not running right... its idling kinda rough and exhaust tone has completely changed... it sounds like my buddy's stage 2.5 WRX... would bigger injectors change the tone of the exhaust even though the AFR is normal? I know most of you are gonna say "get it dyno tuned" but I'm gonna wait till i have turbo installed first then get it tuned.

Post by **Spunkster** » Fri Dec 15, 2006 10:23 am

What injectors are you using?

deafy · Post by **deafy** » Fri Dec 15, 2006 11:20 am

i'm using rc550cc saturated injectors with no resistor box

deafy · Post by **deafy** » Fri Dec 15, 2006 3:38 pm

Also, this is all open loop.

Post by **Spunkster** » Mon Dec 18, 2006 10:34 am

The calibration you are using was tuned with 440c injectors. You will need to get this car tuned on the dyno to get the correct A/F ratios.

deafy · Post by **deafy** » Mon Dec 18, 2006 12:02 pm

I changed the fuel trim to 550cc and decreased the fuel map... afr fluctuates ALOT

Post by **Spunkster** » Mon Dec 18, 2006 1:04 pm

Thats because it has not been tuned. Different sized injectors have different characteristics. You must tune this using a wideband at part and full throttle.

deafy · Post by **deafy** » Wed Dec 20, 2006 4:36 pm

Found the problem... spark plug was wet, wouldn't ignite. Car runs BEAUTIFULLY smooth...