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The Terminator
Engine/Tuning
Someone familiar with Tuner pro, have questions
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<blockquote data-quote="1wild-horse" data-source="post: 16942078" data-attributes="member: 84197"><p>I made the maf table change <em>after </em>swapping the maf out and fixing the small leaks. So I may have created a problem by introducing the new maf?</p><p>The whole problem has been real confusing because, really, putting that vac line back on should have fixed it. I can't post the log from the pass when it happened, must not allow that type of file? You can see the data was perfect until 3rd gear. That's when the vac line came off. Anyone interested in viewing it I will send it their way..dm me.</p><p></p><p>Did not actually put a gauge on it. Could feel vacuum there. Source is from the lower intake. Same port that will make a vac/boost gauge read. It's not pre rotor pack like off the inlet if that's what you're driving at. Should be same as factory, vac and boost. </p><p>[ATTACH=full]1804102[/ATTACH]</p><p></p><p>When I spray brake clean looking for a vac leak I do watch for the changes on the stft. That wasn't clear in my post. Those react off the O2's so its very quick to pick up the brake clean being ingested. But I use ltft to verify there is a leak present if they are elevated.. raising the throttle and they snap back to zero is also a good indicator. Also watch to verify the fix, if it starts to pull fuel out, you know you found it. In this case though, changing out that maf may have created changes since plugging every vac source except for the line to the frps did not remove all the learned long term. </p><p>What else besides me throwing a new maf at it and vac leaks could cause the changes to the learned long term values? Not receiving enough fuel I guess is a possibility..injector flow?</p></blockquote><p></p>
[QUOTE="1wild-horse, post: 16942078, member: 84197"] I made the maf table change [I]after [/I]swapping the maf out and fixing the small leaks. So I may have created a problem by introducing the new maf? The whole problem has been real confusing because, really, putting that vac line back on should have fixed it. I can't post the log from the pass when it happened, must not allow that type of file? You can see the data was perfect until 3rd gear. That's when the vac line came off. Anyone interested in viewing it I will send it their way..dm me. Did not actually put a gauge on it. Could feel vacuum there. Source is from the lower intake. Same port that will make a vac/boost gauge read. It's not pre rotor pack like off the inlet if that's what you're driving at. Should be same as factory, vac and boost. [ATTACH type="full"]1804102[/ATTACH] When I spray brake clean looking for a vac leak I do watch for the changes on the stft. That wasn't clear in my post. Those react off the O2's so its very quick to pick up the brake clean being ingested. But I use ltft to verify there is a leak present if they are elevated.. raising the throttle and they snap back to zero is also a good indicator. Also watch to verify the fix, if it starts to pull fuel out, you know you found it. In this case though, changing out that maf may have created changes since plugging every vac source except for the line to the frps did not remove all the learned long term. What else besides me throwing a new maf at it and vac leaks could cause the changes to the learned long term values? Not receiving enough fuel I guess is a possibility..injector flow? [/QUOTE]
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