VF-Engineering SC boost/temp gauge install and 3.6 pulley dyno
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So, 99, let me summarize,
VF-E is wrong, Vortech is wrong, you are right, you know of others that are running more boost but not at liberty to say, my set up is wrong but you can't document why, your set up is a secret... I could go on and on. Basically your contribution to this thread has been nil, you evidence and substantiation nil and you condescending attitude out of line. If some day you want to back up your assertions with supporting evidence I would be glad to listen and learn. In the mean time you are simply a blowhard that may be convincing to some but not to others, like me, that base their opinions and knowledge on actually documented and supported evidence.
For my own edification what is your schooling, what do you do for a living and how old are you?
I'll go first. BS Aeronautical engineering- Florinda Institute of Technology, Captain, Delta Airlines, 48
Please also enlighten us on your qualifications as a self proclaimed expert.
VF-E is wrong, Vortech is wrong, you are right, you know of others that are running more boost but not at liberty to say, my set up is wrong but you can't document why, your set up is a secret... I could go on and on. Basically your contribution to this thread has been nil, you evidence and substantiation nil and you condescending attitude out of line. If some day you want to back up your assertions with supporting evidence I would be glad to listen and learn. In the mean time you are simply a blowhard that may be convincing to some but not to others, like me, that base their opinions and knowledge on actually documented and supported evidence.
For my own edification what is your schooling, what do you do for a living and how old are you?
I'll go first. BS Aeronautical engineering- Florinda Institute of Technology, Captain, Delta Airlines, 48
Please also enlighten us on your qualifications as a self proclaimed expert.
Last edited by WaltB; Sep 19, 2009 at 01:13 PM.
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Here is a link to something you may be looking for and hope it helps!??.....
http://forums.rennlist.com/rennforum...637-post8.html
It is a thread titled(couldn't add the link for some reason):
Rennlist Discussion Forums > Water Cooled Technical Discussion Areas > 996 Forum
Custom Supercharger and FVD tuning
Stacy
http://forums.rennlist.com/rennforum...637-post8.html
It is a thread titled(couldn't add the link for some reason):
Rennlist Discussion Forums > Water Cooled Technical Discussion Areas > 996 Forum
Custom Supercharger and FVD tuning
Stacy
Last edited by justatoy; Sep 19, 2009 at 01:23 PM.
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Very sad, I've seen other such immature types on different boards but am very surprised to see it here simply because the cost of Porsche ownership or lease weeds out the riffraff.
Unfortunately, I guess there will always be types like 1999porsche911 that can not maintain civil conversations and can not or will not provide supporting evidence of their claims.
His immaturity speaks volumes and his contribution in any documentable fashion to this thread was non-existent. I have to say in my opinion because of this, his creditability must be seriously questioned.
Unfortunately, I guess there will always be types like 1999porsche911 that can not maintain civil conversations and can not or will not provide supporting evidence of their claims.
His immaturity speaks volumes and his contribution in any documentable fashion to this thread was non-existent. I have to say in my opinion because of this, his creditability must be seriously questioned.
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Obviously there IS no making you guys see eye to eye...!
I WILL NOT drill my intercooler to hook a gauge in there...as I feel the boost measurement can be accurately placed BEHIND the throttle body WITHOUT drilling holes....
Anyway HERE is a pic of where I check boost......what is your opinion on this?
I tee'd off of the vacuum boost adapter sent with the VF kit.
Is it where you checked yours at first!
I would love for some other supercharger installers to comment on this location!
Would be great to know 'THE BEST'most accurate measurement would be....
Stacy
I WILL NOT drill my intercooler to hook a gauge in there...as I feel the boost measurement can be accurately placed BEHIND the throttle body WITHOUT drilling holes....
Anyway HERE is a pic of where I check boost......what is your opinion on this?
I tee'd off of the vacuum boost adapter sent with the VF kit.
Is it where you checked yours at first!
I would love for some other supercharger installers to comment on this location!
Would be great to know 'THE BEST'most accurate measurement would be....
Stacy
Last edited by justatoy; Sep 19, 2009 at 02:43 PM.
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Gee Stacy, it is scary when YOUR post seems like the most civilized one here! 
If the emotions could be removed, I suspect that both protagonists (antagonists?) on these long threads have lots of useful info to offer on this subject. Somehow, attitudes, either real or perceived, got in the way of a more useful exchange.
It seems to me that the hangup has occurred over the differences between absolute readings and relative readings. But hell, I'm just an old mechanical engineer and have forgotten most of what I ever knew about fluid dynamics and/or Otto cycles.
If the emotions could be removed, I suspect that both protagonists (antagonists?) on these long threads have lots of useful info to offer on this subject. Somehow, attitudes, either real or perceived, got in the way of a more useful exchange.
It seems to me that the hangup has occurred over the differences between absolute readings and relative readings. But hell, I'm just an old mechanical engineer and have forgotten most of what I ever knew about fluid dynamics and/or Otto cycles.
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You have met me (in person),seen my wife,been to my house and driven my car......all of which are NOT civilized...so please don't start any rumours and DON'T ever say that again,LOL!!!
Anyway...back on topic.....
2006997C4S...any data collected via your Durametric run?!
Stacy
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Obviously there IS no making you guys see eye to eye...!
I WILL NOT drill my intercooler to hook a gauge in there...as I feel the boost measurement can be accurately placed BEHIND the throttle body WITHOUT drilling holes....
Anyway HERE is a pic of where I check boost......what is your opinion on this?
I tee'd off of the vacuum boost adapter sent with the VF kit.
Is it where you checked yours at first!
I would love for some other supercharger installers to comment on this location!
Would be great to know 'THE BEST'most accurate measurement would be....
Stacy
I WILL NOT drill my intercooler to hook a gauge in there...as I feel the boost measurement can be accurately placed BEHIND the throttle body WITHOUT drilling holes....
Anyway HERE is a pic of where I check boost......what is your opinion on this?
I tee'd off of the vacuum boost adapter sent with the VF kit.
Is it where you checked yours at first!
I would love for some other supercharger installers to comment on this location!
Would be great to know 'THE BEST'most accurate measurement would be....
Stacy
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[quote=keninirvine;2546905]Gee Stacy, it is scary when YOUR post seems like the most civilized one here!
Ken,
That was funny $hit....u beat me 2 it! I must be slippin or something
Ken,
That was funny $hit....u beat me 2 it! I must be slippin or something
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Hi 2006997C4SCab,
i like to compliment you on the very nice gauge installation ! May I ask where do you get the sport chrono cover ?
I installed the V3 supercharger for 4 months now, it doesn't have any leak and all seems to run smoothly. I had miss fired error code (from heat and bad China fuel), after changing to cooler spark plugs & use fuel additive, all seem to be fine. I have not dyno my car, but it just doesn't seem that fast ! My C2s had a very hard time trying to pass a stock C4s on a long straight.
Have you driven your car head to head against a stock Porsche ?
Thanks, silk
PS I only changed plenum, stock header & cat, only changed mufflers
i like to compliment you on the very nice gauge installation ! May I ask where do you get the sport chrono cover ?
I installed the V3 supercharger for 4 months now, it doesn't have any leak and all seems to run smoothly. I had miss fired error code (from heat and bad China fuel), after changing to cooler spark plugs & use fuel additive, all seem to be fine. I have not dyno my car, but it just doesn't seem that fast ! My C2s had a very hard time trying to pass a stock C4s on a long straight.
Have you driven your car head to head against a stock Porsche ?
Thanks, silk
PS I only changed plenum, stock header & cat, only changed mufflers
Last edited by silk; Sep 22, 2009 at 06:55 PM.
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OK. I'll be a chump and jump in here too and try to moderate this.
I've read the whole thing through, and some things are pretty clear.
The "real" place to measure boost is the closest that you can get to next to the combustion chamber, as THAT is where the added air really comes to benefit... it's the whole point of the supercharger. There are places in the system, by process, that can and will reduce boost a bit. The intercooler is at the top of that list. VF, possibly due to their competition with turbo kits (dunno), is telling people (you) to read before the biggest point of boost dilution. That's fine when you are just trying to see benefits of other mods such as pulleys. However, the same percentage loss of boost through the intercooler will apply to the added boost from the smaller pulley. If you take what you have seen (which is in the realm of what they claim) and put it into the formula containing the percentage of loss through the intercooler, then you're back down into the standard and acceptable increase that others have seen with the same modification. The argument over increase of boost from a pulley is a silly one, because it works itself out in simple math and observation.
Another point: My car ran rich at first too. I had the 9th kit that VF did for the 997S, so it was an early one. Stacy has it now. Their cure for the richness, at first, was to change my program in the ECU. However, that led to stalling. So they gave me a smaller set of injectors and another new program. Then, I ran lean at max rpm but otherwise I was fine. My point with this is that you might consider that the issue is not the fuel pump. And, as you know, running lean is scary. Be careful, especially on the dyno.
99 is a brassy guy. He does make statements as if they are facts. He's no diplomat, that's for sure. He's pissed me off a few times in the past, but in the end, he does have a lot of info. He just needs a PR guy on here to help his information get to our eyes without the quality of it being buried by his lack of people skills. He's here to help... but sometimes that comes in the form of drill-sargeant-style education, and sometimes he applies too much of his experiences to the whole than should be.
Regardless, your numbers are crazy high. Understand that. It's hard for those of us to see them and not divert from your original intent for this post. That, mixed with running lean and hot, and we all want to jump in (quickly) and help. That means that the first thing to do is troubleshoot. We started bantering about what all was wrong with the picture, and got really derailed.
I suggest we get back on track with finding out what's going on here. A dyno shouldn't be this far off. My car dynoed within 1HP of what Stacy's does, and I dynoed mine on a hot and humid day on the Carolina coast, and Stacy tested his in Vancouver. Trust me. I'm aware that the fact that they are so close is coincidence. But the fact that they are within 20-30 HP is not a coincidence at all.
Hope this helps some.
Jared
I've read the whole thing through, and some things are pretty clear.
The "real" place to measure boost is the closest that you can get to next to the combustion chamber, as THAT is where the added air really comes to benefit... it's the whole point of the supercharger. There are places in the system, by process, that can and will reduce boost a bit. The intercooler is at the top of that list. VF, possibly due to their competition with turbo kits (dunno), is telling people (you) to read before the biggest point of boost dilution. That's fine when you are just trying to see benefits of other mods such as pulleys. However, the same percentage loss of boost through the intercooler will apply to the added boost from the smaller pulley. If you take what you have seen (which is in the realm of what they claim) and put it into the formula containing the percentage of loss through the intercooler, then you're back down into the standard and acceptable increase that others have seen with the same modification. The argument over increase of boost from a pulley is a silly one, because it works itself out in simple math and observation.
Another point: My car ran rich at first too. I had the 9th kit that VF did for the 997S, so it was an early one. Stacy has it now. Their cure for the richness, at first, was to change my program in the ECU. However, that led to stalling. So they gave me a smaller set of injectors and another new program. Then, I ran lean at max rpm but otherwise I was fine. My point with this is that you might consider that the issue is not the fuel pump. And, as you know, running lean is scary. Be careful, especially on the dyno.
99 is a brassy guy. He does make statements as if they are facts. He's no diplomat, that's for sure. He's pissed me off a few times in the past, but in the end, he does have a lot of info. He just needs a PR guy on here to help his information get to our eyes without the quality of it being buried by his lack of people skills. He's here to help... but sometimes that comes in the form of drill-sargeant-style education, and sometimes he applies too much of his experiences to the whole than should be.
Regardless, your numbers are crazy high. Understand that. It's hard for those of us to see them and not divert from your original intent for this post. That, mixed with running lean and hot, and we all want to jump in (quickly) and help. That means that the first thing to do is troubleshoot. We started bantering about what all was wrong with the picture, and got really derailed.
I suggest we get back on track with finding out what's going on here. A dyno shouldn't be this far off. My car dynoed within 1HP of what Stacy's does, and I dynoed mine on a hot and humid day on the Carolina coast, and Stacy tested his in Vancouver. Trust me. I'm aware that the fact that they are so close is coincidence. But the fact that they are within 20-30 HP is not a coincidence at all.
Hope this helps some.
Jared
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Joined: May 2007
Posts: 2,481
From: Blaine, Wa (not in Irvine anymore)
Rep Power: 195
OK. I'll be a chump and jump in here too and try to moderate this.
I've read the whole thing through, and some things are pretty clear.
The "real" place to measure boost is the closest that you can get to next to the combustion chamber, as THAT is where the added air really comes to benefit... it's the whole point of the supercharger. There are places in the system, by process, that can and will reduce boost a bit. The intercooler is at the top of that list. VF, possibly due to their competition with turbo kits (dunno), is telling people (you) to read before the biggest point of boost dilution. That's fine when you are just trying to see benefits of other mods such as pulleys. However, the same percentage loss of boost through the intercooler will apply to the added boost from the smaller pulley. If you take what you have seen (which is in the realm of what they claim) and put it into the formula containing the percentage of loss through the intercooler, then you're back down into the standard and acceptable increase that others have seen with the same modification. The argument over increase of boost from a pulley is a silly one, because it works itself out in simple math and observation.
Another point: My car ran rich at first too. I had the 9th kit that VF did for the 997S, so it was an early one. Stacy has it now. Their cure for the richness, at first, was to change my program in the ECU. However, that led to stalling. So they gave me a smaller set of injectors and another new program. Then, I ran lean at max rpm but otherwise I was fine. My point with this is that you might consider that the issue is not the fuel pump. And, as you know, running lean is scary. Be careful, especially on the dyno.
99 is a brassy guy. He does make statements as if they are facts. He's no diplomat, that's for sure. He's pissed me off a few times in the past, but in the end, he does have a lot of info. He just needs a PR guy on here to help his information get to our eyes without the quality of it being buried by his lack of people skills. He's here to help... but sometimes that comes in the form of drill-sargeant-style education, and sometimes he applies too much of his experiences to the whole than should be.
Regardless, your numbers are crazy high. Understand that. It's hard for those of us to see them and not divert from your original intent for this post. That, mixed with running lean and hot, and we all want to jump in (quickly) and help. That means that the first thing to do is troubleshoot. We started bantering about what all was wrong with the picture, and got really derailed.
I suggest we get back on track with finding out what's going on here. A dyno shouldn't be this far off. My car dynoed within 1HP of what Stacy's does, and I dynoed mine on a hot and humid day on the Carolina coast, and Stacy tested his in Vancouver. Trust me. I'm aware that the fact that they are so close is coincidence. But the fact that they are within 20-30 HP is not a coincidence at all.
Hope this helps some.
Jared
I've read the whole thing through, and some things are pretty clear.
The "real" place to measure boost is the closest that you can get to next to the combustion chamber, as THAT is where the added air really comes to benefit... it's the whole point of the supercharger. There are places in the system, by process, that can and will reduce boost a bit. The intercooler is at the top of that list. VF, possibly due to their competition with turbo kits (dunno), is telling people (you) to read before the biggest point of boost dilution. That's fine when you are just trying to see benefits of other mods such as pulleys. However, the same percentage loss of boost through the intercooler will apply to the added boost from the smaller pulley. If you take what you have seen (which is in the realm of what they claim) and put it into the formula containing the percentage of loss through the intercooler, then you're back down into the standard and acceptable increase that others have seen with the same modification. The argument over increase of boost from a pulley is a silly one, because it works itself out in simple math and observation.
Another point: My car ran rich at first too. I had the 9th kit that VF did for the 997S, so it was an early one. Stacy has it now. Their cure for the richness, at first, was to change my program in the ECU. However, that led to stalling. So they gave me a smaller set of injectors and another new program. Then, I ran lean at max rpm but otherwise I was fine. My point with this is that you might consider that the issue is not the fuel pump. And, as you know, running lean is scary. Be careful, especially on the dyno.
99 is a brassy guy. He does make statements as if they are facts. He's no diplomat, that's for sure. He's pissed me off a few times in the past, but in the end, he does have a lot of info. He just needs a PR guy on here to help his information get to our eyes without the quality of it being buried by his lack of people skills. He's here to help... but sometimes that comes in the form of drill-sargeant-style education, and sometimes he applies too much of his experiences to the whole than should be.
Regardless, your numbers are crazy high. Understand that. It's hard for those of us to see them and not divert from your original intent for this post. That, mixed with running lean and hot, and we all want to jump in (quickly) and help. That means that the first thing to do is troubleshoot. We started bantering about what all was wrong with the picture, and got really derailed.
I suggest we get back on track with finding out what's going on here. A dyno shouldn't be this far off. My car dynoed within 1HP of what Stacy's does, and I dynoed mine on a hot and humid day on the Carolina coast, and Stacy tested his in Vancouver. Trust me. I'm aware that the fact that they are so close is coincidence. But the fact that they are within 20-30 HP is not a coincidence at all.
Hope this helps some.
Jared