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SVTPerformance's Chain of Restaurants
Tuning À la carte
Is Your Car Tuned Correctly?
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<blockquote data-quote="blackshelby" data-source="post: 12518595" data-attributes="member: 83686"><p>Misleading........</p><p>I really believe you miss quoted me, or want people to believe something else was quoted that wasn't.</p><p>In fact my beliefs agree with Greg's. and some others here.</p><p>I believe in real air flow data .(Like Ford) That's a fact...... no arguing there. </p><p>I will not do it any other way, it is the most accurate way.</p><p>Not to mention is actually easier to do it that way. </p><p>I use the flow bench for transfer function's and only the flow bench.</p><p>Done it that way for the past 20 plus years .(I learned this method directly from the Ford engineer who actually designed the systems for Ford. )</p><p>I do it this way for many reasons... all inline why Ford does it.</p><p>One reason, in a car its basically impossible to know what your completed fuel system flow is.</p><p>You have a BAP in the two cars you used for an example.... do you know what your fuel flow is in both cars ?? I doubt it ......... </p><p>So you have fuel flow differences but you go and change a MAF transfer curve or say it is the MAF?</p><p>You must understand the complete fuel flow/system from pumps to injectors and everything in-between it, if you want to even try to back into figuring out a unknown meter curve. If not you will make a correction to your MAF/airflow for an unknown value in your fuel system. Some want to believe moving a MAF curve is the fix all and never even think about fuel. This is usually the same people that believe it is ok to adjust the MAF curve for nothing more than a A/F ratio. </p><p>Starting with a real transfer function not only gives you the COMPLETE FULL RANGE of the MAF something that is basically impossible to do in a car it will also insure your load calculations are correct.</p><p>MAF being incorrect will effect load along with many other things.. Making a change to your fuel system to correct your A/F will not. Especially when you start with known data for you MAF...................... </p><p>As for CAI being off 7-10 percent well maybe depending what CAI type you are using...</p><p>I flowed many different Ford meters housing including sensors and never seen them vary even close to what you stated. </p><p>The design of the MAF/Housing and sensor type makes a huge difference.</p></blockquote><p></p>
[QUOTE="blackshelby, post: 12518595, member: 83686"] Misleading........ I really believe you miss quoted me, or want people to believe something else was quoted that wasn't. In fact my beliefs agree with Greg's. and some others here. I believe in real air flow data .(Like Ford) That's a fact...... no arguing there. I will not do it any other way, it is the most accurate way. Not to mention is actually easier to do it that way. I use the flow bench for transfer function's and only the flow bench. Done it that way for the past 20 plus years .(I learned this method directly from the Ford engineer who actually designed the systems for Ford. ) I do it this way for many reasons... all inline why Ford does it. One reason, in a car its basically impossible to know what your completed fuel system flow is. You have a BAP in the two cars you used for an example.... do you know what your fuel flow is in both cars ?? I doubt it ......... So you have fuel flow differences but you go and change a MAF transfer curve or say it is the MAF? You must understand the complete fuel flow/system from pumps to injectors and everything in-between it, if you want to even try to back into figuring out a unknown meter curve. If not you will make a correction to your MAF/airflow for an unknown value in your fuel system. Some want to believe moving a MAF curve is the fix all and never even think about fuel. This is usually the same people that believe it is ok to adjust the MAF curve for nothing more than a A/F ratio. Starting with a real transfer function not only gives you the COMPLETE FULL RANGE of the MAF something that is basically impossible to do in a car it will also insure your load calculations are correct. MAF being incorrect will effect load along with many other things.. Making a change to your fuel system to correct your A/F will not. Especially when you start with known data for you MAF...................... As for CAI being off 7-10 percent well maybe depending what CAI type you are using... I flowed many different Ford meters housing including sensors and never seen them vary even close to what you stated. The design of the MAF/Housing and sensor type makes a huge difference. [/QUOTE]
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