how much does a .020 over change your tune?
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how much does a .020 over change your tune?
lets say i get my car tuned, then somewhere down the road i wind up doing a .5mm overbore. maybe from 84-84.5mm. is that a concerning difference that i should retune, or is it negligable. im just speaking theoretically here...thanks
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Re: how much does a .020 over change your tune? (blackeg)
If compression doesn't change then don't worry about it. Wouldn't hurt to throw a wideband on it and make sure A/F's are in order.
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Re: how much does a .020 over change your tune? (blackeg)
im sure a quick 15 minute check by the tuner wouldnt hurt with all that money
shouldnt take long since its a small change
shouldnt take long since its a small change
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Re: how much does a .020 over change your tune? (slodel)
yeah, my concern would be that my tuner would be hours away and super booked to make scheduling hard to do, especially with my work schedule
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Re: how much does a .020 over change your tune? (Muckman)
good answer muckman. i just recently went from 81 to 84mm and am still unsure of how much more timing is justified? i had trouble on the dyno so im still conservative ( 18* total at 12 psi boost)
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