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Old 11-22-2006, 09:20 PM
  #61  
lart951
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Originally Posted by special tool
Yes, I can.
Okay, so you are driving one day running 25psi and suddenly a nice gentleman in his late 60's driving a C6 Z06 stops next to you and gives you a dirty look through his bifocal glasses, then you decide there is no way I am letting this guy beat me, so you crank your boost from 25psi to 30psi without any adjustments to your piggyback or stm-6 right? is this possible?
Old 11-22-2006, 09:29 PM
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Originally Posted by Stage3GTI
I'm glad the car will be put to good use.

I'd rather see it recycled than just be shredded for scrap metal.

If Luis can make good $ on it, then that's great. Unfortunately for me I just was not able to do anything with the car myself due to my location. I'm sure Luis will make a few dollars as there are a couple things on the car to sell. That Greddy Type S with the adapters has always been a favorite of mine. It's been on a few high horsepower 1.8T cars in the past. The 951 also has Guru chips and all the associated hardware. I hope the interior has some bits that are nice and sellable. The cd player is hopefully still in the car too, not that it's worth much....

Anyway, I hope Luis comes out good on this deal. I certainly appreciate his help with the car.

btw Luis, you like those Scoobies over at Dan's shop? They're not slow..... The Evo isn't bad either.

Nice rides over there Nick, sure they were a little surprise to see a 20 years old car kept up with a 07 450awhp subaru. They do have a 320awhp audi wagon with stickers that read 12sec family wagon. Btw your car is gone, it caught in fire due to a bursted fuel line, the IC, pipes, nose panel, bumper cover, and all the front houses and light mechanisn are totally melted, it is also missing one wheel. I will try to pick it up on friday morning. I promise you one thing, I will tune my car for 25psi and I am going back to leave that subi in the dust.
Old 11-22-2006, 09:33 PM
  #63  
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Originally Posted by lart951
Okay, so you are driving one day running 25psi and suddenly a nice gentleman in his late 60's driving a C6 Z06 stops next to you and gives you a dirty look through his bifocal glasses, then you decide there is no way I am letting this guy beat me, so you crank your boost from 25psi to 30psi without any adjustments to your piggyback or stm-6 right? is this possible?
As long as your ***** don't hang to far down, turn it up!! Duh! I'm not advocating to run 25 or 30 PSI, that's up to you, but, the point is what I said already about the Vitesse custom chips.

Old 11-23-2006, 01:33 AM
  #64  
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We have to make one thing clear, though.
It's the right MAF, WITH the accompaning chips that's needed (to be able to increase boost, and keep AFR constant)
The autothority MAF system does the same thing.
Old 11-23-2006, 01:51 AM
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Originally Posted by TurboTommy
We have to make one thing clear, though.
It's the right MAF, WITH the accompaning chips that's needed (to be able to increase boost, and keep AFR constant)
The autothority MAF system does the same thing.
That is a given.....
Old 11-23-2006, 06:13 AM
  #66  
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yeah, surely this is not possible on an AFM car?
Old 11-23-2006, 06:19 AM
  #67  
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Originally Posted by facboy
yeah, surely this is not possible on an AFM car?
It's nothing magical. Both AFM and MAF-sensors outputs a signal in 0-5 volt depending on airflow or air mass. That signal is used by the Motronic along with a bunch of other parameters to calculate the fuel to inject.

So, more the boost (more air flow/mass passing the sensor) = more fuel that is being injected. But depending on MAF calibration with different chips, this isn't always a 1:1 relationship.

But to answer your question, this is exactly how it works on a stock car.
Otherwise your car would bog and almost die with an old wastegate..
Old 11-23-2006, 06:24 AM
  #68  
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Good one Lart. You have to come out here some time. We do this **** all the time...
Old 11-25-2006, 09:01 PM
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Originally Posted by lart951
Btw my A/F ratio went up to 13:1 for one second at 6500rpm's but the head gasket took it well, it was cold and I was running 20% xylene
Great story Luis, how cold would you estimate it was that night? 50 deg F?
Old 11-25-2006, 09:18 PM
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How do you know his 450 number was not unlike your 400 number ?? bet he did not have over 290 tops ! LOL :-)
Old 11-25-2006, 10:54 PM
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Originally Posted by Trucho-951
Great story Luis, how cold would you estimate it was that night? 50 deg F?
Torrance is close to the beach so it was about 50-55.
Old 11-25-2006, 11:02 PM
  #72  
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Originally Posted by David Floyd
How do you know his 450 number was not unlike your 400 number ?? bet he did not have over 290 tops ! LOL :-)
I was running 19psi, my last dyno at that boost level produced 341whp. The 1st run, he put 3-4 cars between us easily, if he was running 400whp he could not have move as fast, besides that I needed 23psi to barely keep up with him, do the math how much power was my car putting down at 23psi?
Old 11-25-2006, 11:14 PM
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Just busting your chops :-)
Old 11-26-2006, 07:09 AM
  #74  
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Originally Posted by Duke
It's nothing magical. Both AFM and MAF-sensors outputs a signal in 0-5 volt depending on airflow or air mass. That signal is used by the Motronic along with a bunch of other parameters to calculate the fuel to inject.

So, more the boost (more air flow/mass passing the sensor) = more fuel that is being injected. But depending on MAF calibration with different chips, this isn't always a 1:1 relationship.

But to answer your question, this is exactly how it works on a stock car.
Otherwise your car would bog and almost die with an old wastegate..
i always thought that the stock AFM signal maxes out at a particular point - i was under the impression that it basically maxes out even on a stock 951. i remember reading several things to this effect years ago. so you can't go blindly turning up the boost on an AFM car because there is no way to 'detect' the increased air flow. not a problem on a MAF because they have a greater range. am i completely clueless?
Old 11-26-2006, 07:54 AM
  #75  
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Originally Posted by lart951
I was running 19psi, my last dyno at that boost level produced 341whp. The 1st run, he put 3-4 cars between us easily, if he was running 400whp he could not have move as fast, besides that I needed 23psi to barely keep up with him, do the math how much power was my car putting down at 23psi?

You are pobably at around 347 RW at 23 psi.



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