cold air "Will it improve Horsepower"
Thread Starter
Instructor
Joined: Mar 2002
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From: valrico fl
St. Jude Donor '05
cold air "Will it improve Horsepower"
I have a blackwing on a 2002 C5. Top breather basically. Have heard bad stuff
on the blackwing cover like surging. So my thought was to install the Cold air
screens through the fog lamps. Has anyone done this with a blackwing and
seen a performace increase. Also has anyone done a modified tubing deal with
a box to feed the air into the blackwingfrom the cold air screens.
Spoke with steve cole today on this his said that would be the best way to do
it, if you didnt want to worry about rain and puddles get up through an
open hole in the shroud. :)
on the blackwing cover like surging. So my thought was to install the Cold air
screens through the fog lamps. Has anyone done this with a blackwing and
seen a performace increase. Also has anyone done a modified tubing deal with
a box to feed the air into the blackwingfrom the cold air screens.
Spoke with steve cole today on this his said that would be the best way to do
it, if you didnt want to worry about rain and puddles get up through an
open hole in the shroud. :)
Le Mans Master
Joined: Mar 1999
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From: delmont pa
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Cruise-In II Veteran
Re: cold air "Will it improve Horsepower" (golfman)
you get 1% increase in HP for every 10 degrees you lower the air inlet temp. you can check the temp at different places under the hood by getting a home indoor/outdoor thermometer at you local home improvement store. the outdoor probe has 6/8 feet of wire. i found out that the air temp inside my cut stock air box and the outside air was less than 5 degrees. the ram air part does not come into effect to very high speeds. :chevy
[Modified by clem zahrobsky, 10:37 PM 4/23/2002]
[Modified by clem zahrobsky, 10:37 PM 4/23/2002]
Le Mans Master
Joined: Nov 2001
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From: Cincinnati Ohio
Re: cold air "Will it improve Horsepower" (Aln)
I opened up my foglight areas before I installed my Z06 screens. It helps more at higher speeds than anything else. I have not experienced any surging or adverse affects to opening my airbox and floglight screens. :yesnod: I soon hope to get a used Blackwing on the Forum. After reading about it in Vette Magazine, I'm sold. :cheers:
Burning Brakes
Joined: Dec 1999
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Re: cold air "Will it improve Horsepower" (batsallover)
On the same train of thought - how about just drilling a few large holes under the blackwing to bring in cold air and then putting on the cold air box - anyone do this?
Safety Car
Joined: Dec 1999
Posts: 4,202
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From: Plano TX
Re: cold air "Will it improve Horsepower" (golfman)
Originally posted by vettman10 on the Corvette Forum 01-13-2001 08:37 PM:
....I've always wondered if it was worth it when I cut the radiator shroud on my previous C5 (a '97) to install the Vortex kit, and further wondered if the holes I cut in the fog light shroud on my new '01 would really provide cooler air to the intake. So, ... on the way home I did a temperature test.
....to monitor intake air temp, I inserted the temp sensor into the air box next to the filter element. I ran the wire back into the car so I could monitor the temp while driving. After I got home I taped up the openings I had made in the fog light shroud and tested again.
Here's the results listed in degrees above the Outside Air Temp (OAT).
Obviously the hp gain with the aftermarket intake kits is the relief of the air box/filter restriction. The cold air aspect is good only for a little more tire spin on launch, as if we don't already have enough.
....I've always wondered if it was worth it when I cut the radiator shroud on my previous C5 (a '97) to install the Vortex kit, and further wondered if the holes I cut in the fog light shroud on my new '01 would really provide cooler air to the intake. So, ... on the way home I did a temperature test.
....to monitor intake air temp, I inserted the temp sensor into the air box next to the filter element. I ran the wire back into the car so I could monitor the temp while driving. After I got home I taped up the openings I had made in the fog light shroud and tested again.
Here's the results listed in degrees above the Outside Air Temp (OAT).
- Closed fog light shroud at 10mph, it was +12 and still rising (partial test).
- Closed fog light shroud at 30mph: +7.
- Closed fog light shroud at 60mph: +5.
- Open fog light shroud at 10 mph: +4 (2 x 2.5" by 3.5" holes) .
- Open fog light shroud at 30mph: +/-0.
- Open fog light shroud at 60mph: +/-0.
- Open fog light shroud at a stationary idle: +60 and was still rising...
Obviously the hp gain with the aftermarket intake kits is the relief of the air box/filter restriction. The cold air aspect is good only for a little more tire spin on launch, as if we don't already have enough.
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Le Mans Master
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From: delmont pa
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Re: cold air "Will it improve Horsepower" (TooManyIDs)
that conforms my readings,+5 degrees at speed in the air box with no cutting of any panels. i also find bugs on my K&N filter so outside air finds it way to the stock air filter location. :chevy
Thread Starter
Instructor
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From: valrico fl
St. Jude Donor '05
Re: cold air "Will it improve Horsepower" (TooManyIDs)
How did you determine the HP gains off of air temps, also didnt understand the 20 plus hp thing at stationary position. please clarify on this.
Thanks
Thanks
Thread Starter
Instructor
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From: valrico fl
St. Jude Donor '05
Re: cold air "Will it improve Horsepower" (golfman)
Cut six 1 3/8" holes in my fog lights today(3 on each side) Came out looking pretty good. I used a hole saw and the whole project took maybe 45 minutes. The hardest part about this is the clean up of the holes. Does anyone have any solid finding on either dyno improvement or improvement in the 1/4 mile after this mod. :chevy
Safety Car
Joined: Oct 2000
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From: Monticello MN
Re: cold air "Will it improve Horsepower" (clem zahrobsky)
the ram air part does not come into effect to very high speeds.
Ed
Safety Car
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From: Plano TX
Re: cold air "Will it improve Horsepower" (golfman)
How did you determine the HP gains off of air temps, also didnt understand the 20 plus hp thing at stationary position. please clarify on this.
Safety Car
Joined: Feb 2001
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From: Greenville NC
Re: cold air "Will it improve Horsepower" (golfman)
I don't know how much the Cold Air from fog lights will help... but the true COI intakes, ones that only pull air from outside perform much better than the underhood setups. I would give the cover a shot if you want to stick with the Donaldson. Personally, I pulled my Donaldson and switched to a Vortex and could feel the difference (as have other members), the sale of the used Donaldson covered most of the cost of the Vortex Rammer. See what the fastest forum members are running with pretty much just an intake mod on the regular C5... its in the 12.6-12.7 area and they are ones running the true COI... weither its a Vortex, Proflow, Tric, MTI, or Donaldson w/cover. And most of the that have added the Cover to the Donaldson have noticed the difference. I know at least one forum member picked up as much with the cover as the donaldson itself... ran .15 faster than stock with the Donaldson, .30 sec faster than stock with the Donaldson and COI Cover.
Melting Slicks
Joined: Feb 2000
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From: Pittsburgh, PA
Re: cold air "Will it improve Horsepower" (golfman)
Get under your car and look up between the radiator and the back side of the radiator shroud. Is that what you want your air filter exposed to for a few HP?
Leaves, grit, road debris, etc. :nono: Drill a few holes in the fog light shrouds (the air actually goes around to the outside of the filter without blowing directly on it) and add some Z06 grills. :cheers:
Leaves, grit, road debris, etc. :nono: Drill a few holes in the fog light shrouds (the air actually goes around to the outside of the filter without blowing directly on it) and add some Z06 grills. :cheers:
Thread Starter
Instructor
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From: valrico fl
St. Jude Donor '05
Re: cold air "Will it improve Horsepower" (Scruffy)
I have already drilled the holes in the fog shroud. I have not added the grills yet. I did notice while doing that the leaves and crap that was up in the raditor. The holes have diffently made a difference, car is more responsive at around 50 mph and up. Good cheap mod I think. Has anyone seen a 1/4 mile difference that would be the true test.
I would do the donaldson box but TPIS posted on this before and stated that the surging is only on the 01 and newer cars. Something about the maf being different, and he sells the cover so I believe the info. :)
[Modified by golfman, 12:51 AM 5/1/2002]
I would do the donaldson box but TPIS posted on this before and stated that the surging is only on the 01 and newer cars. Something about the maf being different, and he sells the cover so I believe the info. :)
[Modified by golfman, 12:51 AM 5/1/2002]