Running rich after boost pipe installed

kuwait

Member
Mar 31, 2005
194
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i installed an anderson boost pipe on my stang and now its running pig rich , it used to run at 11.7-9 by 6k rpm but now its running low 10 with slight pinging , boost seem fine , i gained 2 psi and the boost is coming up harder than usual , why should it run this rich if i am cramming more air into it? is it losing metered air somewhere?
 
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why the hell are you running it while it's pinging?

There is something wrong here....what is the timing? what octane fuel?

its only pinging at wot and i ran it at wot once since i posted and talked to my tuner , it seems like i had a leak and car was drawing un-metered air that was caused to run fine before because it leaned out the mixture but now with the leak gone its pig rich , will do a re tune and see what happens.