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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="itzl0l" data-source="post: 12511293" data-attributes="member: 98334"><p>I'm going to disagree with the majority of this....heres why:</p><p></p><p>Take for example:</p><p></p><p>03 cobra, Stock. Only change being a ram air intake.....STILL the stock Maf/housing. Changed the filter b4 the maf and the inlet pipe after the maf. Lets call this a "last gen" popular ram air.</p><p></p><p>Suddenly..due to a change in laminar air flow charactaristics, my maf curve is off a few percent, not alot, but enough to require a tweak in prp. Now...I havent changed the MAF/Housing (but suddenly the oem values arent 100% correct any longer).</p><p></p><p>I tweaked this.....as nearly every tuner does, by adjusting the MAF xfer curve in prp. Why on earth would I muck around with fueling/injecters/slopes ect...WHEN that is not what changed?? ...you tweak the variable that changed....airflow.</p><p></p><p>Value files for injectors are known and are normally rock solid. (yes there are certainly exceptions). MAF's however....due to variences in airlow....manufacture, tolerances in housings and filters can vary a good deal off from their published flow charts. Thats a fact of life.</p><p></p><p>Granted, this is not how ford tunes a factory car. But my car didnt come with aftermarket mods either. There is no way to use flow bench #'s for a MAF unless it was flowed with your EXACT intake/filter/meter/housing.....and even this....in the actual car...on the road....i bet it would STILL need to be tweaked. </p><p></p><p>This is how EVERYone tunes...we are talking Rick, Justin, Eric, Don, Herman ....and this is what Greg Banish agree's with as well.</p><p></p><p>Im 110% sure that others are reading this <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> ....and agree with the accepted method, but dont feel like arguing...</p></blockquote><p></p>
[QUOTE="itzl0l, post: 12511293, member: 98334"] I'm going to disagree with the majority of this....heres why: Take for example: 03 cobra, Stock. Only change being a ram air intake.....STILL the stock Maf/housing. Changed the filter b4 the maf and the inlet pipe after the maf. Lets call this a "last gen" popular ram air. Suddenly..due to a change in laminar air flow charactaristics, my maf curve is off a few percent, not alot, but enough to require a tweak in prp. Now...I havent changed the MAF/Housing (but suddenly the oem values arent 100% correct any longer). I tweaked this.....as nearly every tuner does, by adjusting the MAF xfer curve in prp. Why on earth would I muck around with fueling/injecters/slopes ect...WHEN that is not what changed?? ...you tweak the variable that changed....airflow. Value files for injectors are known and are normally rock solid. (yes there are certainly exceptions). MAF's however....due to variences in airlow....manufacture, tolerances in housings and filters can vary a good deal off from their published flow charts. Thats a fact of life. Granted, this is not how ford tunes a factory car. But my car didnt come with aftermarket mods either. There is no way to use flow bench #'s for a MAF unless it was flowed with your EXACT intake/filter/meter/housing.....and even this....in the actual car...on the road....i bet it would STILL need to be tweaked. This is how EVERYone tunes...we are talking Rick, Justin, Eric, Don, Herman ....and this is what Greg Banish agree's with as well. Im 110% sure that others are reading this ;) ....and agree with the accepted method, but dont feel like arguing... [/QUOTE]
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Tuning À la carte
Is Your Car Tuned Correctly?
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