problem with the gt maybe s/c

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06-12-2009, 10:11 AM

#11

Srt2Stang725

2nd Gear Member

Join Date: Sep 2007

Location:

Posts: 274

at wide open throttle 14.7 would be waaaayyy lean, the motor wont last very long at those a/fs. However, 11.7 is pretty good for a boosted car, thats right at the optimul safe/but powerful number. at idle yes you should be stoich (14.7ish)

06-12-2009, 10:29 AM

#12

rlh6805

1st Gear Member

Join Date: Mar 2008

Location: Michigan

Posts: 137

Quote:

Originally Posted by Srt2Stang725

Ok, I stand corrected. I guess it makes sense to run fat at WOT.

06-12-2009, 04:05 PM

#13

moosestang

6th Gear Member

Join Date: Sep 2006

Location: Gainesville, FL

Posts: 11,278

Quote:

Originally Posted by rlh6805

11.5:1 is running rich. 14.7:1 is considered optimal. Check your plugs to see if there fouled, check for dirty air filter or any other air obstruction. I suppose S/C belt slippage could also cause this as not enough air will be entering the engine.

14.7 is optimal while cruising down the interstate or idling, but not at wide open throttle, not even on a naturally aspirated car.

I vote for spark plugs or cop's, spark blow out. How many miles on the plugs?