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S-197 Mustangs
Short Term Fuel Trims +40 to 50%. Cant find out why!
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<blockquote data-quote="d-dub" data-source="post: 13157260" data-attributes="member: 52419"><p>So I can not get my car tuned remotely because Eric Brooks @ Brooks Speed says that the STFT is off @ part throttle and even at idle the STFT is +40% TO 50%.</p><p></p><p>It has the following</p><p>D.S.S 5.0 Forged Stroker</p><p>Procharger D1SC</p><p>GT500 Pumps & harness</p><p>60lbs</p><p>SCT BA5000 MAF</p><p>Charge motion plate deletes</p><p>Snow Performance Meth</p><p>Mac LT</p><p>MAC H pipe</p><p>Flow Masters axleback</p><p></p><p></p><p>I have looked for vacuum leaks with a smoke machine at my work and found VERY slight leaks, fixed them and then watched with a scan tool after leaks were fixed and still no change in fuel trims.</p><p></p><p>Anyone have ideas? I'm running out of them and at my wits end with my car.</p><p></p><p>Only thing I can think of is a bad MAF , Fuel rail pressure sensor, or bad/sold the wrong injectors when I was sold my 60lb I could have some how ended up with 80lb...... I guess another option could be MAF transfer/scaling of the MAF that's not input correctly in the tune?</p><p></p><p>Oh and its +40% on both banks, not just one bank... Any ideas would be appreciated!</p></blockquote><p></p>
[QUOTE="d-dub, post: 13157260, member: 52419"] So I can not get my car tuned remotely because Eric Brooks @ Brooks Speed says that the STFT is off @ part throttle and even at idle the STFT is +40% TO 50%. It has the following D.S.S 5.0 Forged Stroker Procharger D1SC GT500 Pumps & harness 60lbs SCT BA5000 MAF Charge motion plate deletes Snow Performance Meth Mac LT MAC H pipe Flow Masters axleback I have looked for vacuum leaks with a smoke machine at my work and found VERY slight leaks, fixed them and then watched with a scan tool after leaks were fixed and still no change in fuel trims. Anyone have ideas? I'm running out of them and at my wits end with my car. Only thing I can think of is a bad MAF , Fuel rail pressure sensor, or bad/sold the wrong injectors when I was sold my 60lb I could have some how ended up with 80lb...... I guess another option could be MAF transfer/scaling of the MAF that's not input correctly in the tune? Oh and its +40% on both banks, not just one bank... Any ideas would be appreciated! [/QUOTE]
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Short Term Fuel Trims +40 to 50%. Cant find out why!
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