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SVTPerformance's Chain of Restaurants
Tuning À la carte
Tuning Help! New blower, HPX....
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<blockquote data-quote="Don 95Vert" data-source="post: 13353199" data-attributes="member: 15121"><p>The HPX 'tool' gives different units than you need - #mass/per tic is an airflow amount dictated by processor speed which makes the conversion really tough. That said, any MAF value is just a starting point - and often times a really bad starting point. On our turbo Lightning with an HPX, it barely ran with a base value file. But we knew it was just a starting point. We got it running long enough to get a tiny bit of data while forced in OL. From there we made a couple of gross adjustments in the neighborhood of 30-45% an got it in the ballpark. From there it was normal tuning. After dialing it in, it drives like stock and has for the last 5 years or so. Same story with our turbo Mustang and just about every car we have seen with that combo on the dyno and doing remote tunes for. It's a real basic thing to have to do that - it will NEVER run good until it is dialed in. The other thing is applying the known good values for these from a dynotune sometimes are not close either. That's because of variations in inlets, etc. </p><p></p><p>The vehicle runs with the MAF unplugged because it is running on the failed MAF table. Not a good way to leave it.</p><p></p><p>I repeat, get the Pro Racer Package and tune it yourself, you'll be much further ahead money-wise and you will be in full control of the situation yourself. You'll stop relying and hoping with your fingers crossed that someone else gets it right - it'll all be in your hands on your time schedule. Plus you will be able to devote much more actual tuning time to it than any tuner would - you can learn while you fiddle with it. It's not rocket science. I hear there are some great resources available to help you get it tuned correctly.</p><p></p><p>Don LaSota</p></blockquote><p></p>
[QUOTE="Don 95Vert, post: 13353199, member: 15121"] The HPX 'tool' gives different units than you need - #mass/per tic is an airflow amount dictated by processor speed which makes the conversion really tough. That said, any MAF value is just a starting point - and often times a really bad starting point. On our turbo Lightning with an HPX, it barely ran with a base value file. But we knew it was just a starting point. We got it running long enough to get a tiny bit of data while forced in OL. From there we made a couple of gross adjustments in the neighborhood of 30-45% an got it in the ballpark. From there it was normal tuning. After dialing it in, it drives like stock and has for the last 5 years or so. Same story with our turbo Mustang and just about every car we have seen with that combo on the dyno and doing remote tunes for. It's a real basic thing to have to do that - it will NEVER run good until it is dialed in. The other thing is applying the known good values for these from a dynotune sometimes are not close either. That's because of variations in inlets, etc. The vehicle runs with the MAF unplugged because it is running on the failed MAF table. Not a good way to leave it. I repeat, get the Pro Racer Package and tune it yourself, you'll be much further ahead money-wise and you will be in full control of the situation yourself. You'll stop relying and hoping with your fingers crossed that someone else gets it right - it'll all be in your hands on your time schedule. Plus you will be able to devote much more actual tuning time to it than any tuner would - you can learn while you fiddle with it. It's not rocket science. I hear there are some great resources available to help you get it tuned correctly. Don LaSota [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Tuning Help! New blower, HPX....
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