What combo to cure my LS1's asthma
10-03-2012, 08:54 AM
#21
Or you could buy ONLY the Fast intake and a used 90mm TB (~$200) and get over 90% of the gains of everything you just listed.
You can also log MAP readings at WOT to see if there is an intake restriction before just throwing parts at the car hoping for a gain. You want WOT kPa to be very close to ambient air kPa. If they are not considerably different, the engine isn't pulling vacuum and improving the intake tract will not have much/any effect.
You can also log MAP readings at WOT to see if there is an intake restriction before just throwing parts at the car hoping for a gain. You want WOT kPa to be very close to ambient air kPa. If they are not considerably different, the engine isn't pulling vacuum and improving the intake tract will not have much/any effect.
10-03-2012, 10:44 AM
#22
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You can also log MAP readings at WOT to see if there is an intake restriction before just throwing parts at the car hoping for a gain. You want WOT kPa to be very close to ambient air kPa. If they are not considerably different, the engine isn't pulling vacuum and improving the intake tract will not have much/any effect.
Do you have a need for more air is the real question. Porting your LS6 intake is maybe all you really need and a bigger tb and MAF .. would be a lot cheaper than buying a 850 intake to see very minimal gains.
Are you at 100% or less on the kpa ?
This should have been the very first thing suggested not telling someone to buy a whole new intake setup that is expensive and might not help.
10-03-2012, 11:08 AM
#23
Or you could buy ONLY the Fast intake and a used 90mm TB (~$200) and get over 90% of the gains of everything you just listed.
You can also log MAP readings at WOT to see if there is an intake restriction before just throwing parts at the car hoping for a gain. You want WOT kPa to be very close to ambient air kPa. If they are not considerably different, the engine isn't pulling vacuum and improving the intake tract will not have much/any effect.
You can also log MAP readings at WOT to see if there is an intake restriction before just throwing parts at the car hoping for a gain. You want WOT kPa to be very close to ambient air kPa. If they are not considerably different, the engine isn't pulling vacuum and improving the intake tract will not have much/any effect.
Data logging really is needed in order to determine if the FAST is really needed.
That will help you know if your going to gain 8hp for $850 or 16hp. Either way a FAST still has a low hp to dollar ratio.
10-03-2012, 11:27 AM
#24
So here is a list of everything I would need to go all out on getting all the air in on a 2002 Firehawk
Fast LSx 92mm Intake Manifold - BLACK!
$849.99
92mm Cable Drive Throttle Body
$349.99
SLP Smooth Bellow for 1998-2002 F-body
$69.95
Fast Toys Black 98mm LS1 High Flow Air Lid
$169.00
SLP Mass Air Flow Sensor-1998-2000 LS1 F-body or Corvette
$199.95
Sub Total: $1,638.88
+ tune and labor = $2200 quick
All for 20 to 30 rwhp? Aaron was right!
So what is the better alternative.....supercharger?
Anyone have a slightly used, but complete Procharger kit for sale?
Better bang for the buck?
Or what would do the most from the list above over the stock Blackwing and LS6....the fast 92/92 throttle body?
Thanks for all the advice guys.
Fast LSx 92mm Intake Manifold - BLACK!
$849.99
92mm Cable Drive Throttle Body
$349.99
SLP Smooth Bellow for 1998-2002 F-body
$69.95
Fast Toys Black 98mm LS1 High Flow Air Lid
$169.00
SLP Mass Air Flow Sensor-1998-2000 LS1 F-body or Corvette
$199.95
Sub Total: $1,638.88
+ tune and labor = $2200 quick
All for 20 to 30 rwhp? Aaron was right!
So what is the better alternative.....supercharger?
Anyone have a slightly used, but complete Procharger kit for sale?
Better bang for the buck?
Or what would do the most from the list above over the stock Blackwing and LS6....the fast 92/92 throttle body?
Thanks for all the advice guys.
Last edited by mac62989; 10-03-2012 at 11:37 AM.
10-03-2012, 11:30 AM
#25
It depends on your setup. It's not only about the peak gain but how the power band carries in the upper rpm, especially on a cammed or head/cam car.
I got mine used for a couple hundred bucks more than a ls6, in my case it was more bang for buck than a ls6 intake would have been and I have room to grow with it.
I got mine used for a couple hundred bucks more than a ls6, in my case it was more bang for buck than a ls6 intake would have been and I have room to grow with it.
10-04-2012, 03:22 PM
#26
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So, with all your good advice, here we stand. $1600 for parts. (92 Fast/92 TB, 85MAF, Fast Toys Lid, Smooth Bellow, and Filter) plus $600 for labor and re-tune. $2200 for 20rwHP = $110/ per 1 HP. Heads and Cam and tune got made 80 rwHP for $5000 = $63 / per 1HP. Better deal for sure. Damn, why didn't anyone make a cheaper way to force some cold air in there! If I could sell my Blackwing and LS6 intake for $600, that would cover the Labor/tune. $1600/20= $80 per 1 HP. And if I keep talking myself into it, I may pull the trigger
Decisions for the Speed Addiction.
Decisions for the Speed Addiction.
10-04-2012, 03:33 PM
#27
I went from a LS6/stock ported TB to a used Fast 90/90 setup and picked up +27 rwhp. With a retune of course! Hows that for breathing better? $700 for the intake, $200 for the Fast 90 TB and $100 for the retune. Sold the old LS6 intake and TB for a couple $100 more.
10-04-2012, 03:59 PM
#28
So, with all your good advice, here we stand. $1600 for parts. (92 Fast/92 TB, 85MAF, Fast Toys Lid, Smooth Bellow, and Filter) plus $600 for labor and re-tune. $2200 for 20rwHP = $110/ per 1 HP. Heads and Cam and tune got made 80 rwHP for $5000 = $63 / per 1HP. Better deal for sure. Damn, why didn't anyone make a cheaper way to force some cold air in there! If I could sell my Blackwing and LS6 intake for $600, that would cover the Labor/tune. $1600/20= $80 per 1 HP. And if I keep talking myself into it, I may pull the trigger
Decisions for the Speed Addiction.
Decisions for the Speed Addiction.
