Blackwing cold air cover.
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From: valrico fl
St. Jude Donor '05
Blackwing cold air cover.
Does this cause surging or is it an install issue on some cars. Does anyone have this installed now. What are the performance increase over a regular blackwing. Thinking of buying this please advise me.
Thanks
:)
Thanks
:)
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From: Scottsdale AZ
Re: Blackwing cold air cover. (golfman)
I once had the Blackwing cold air cover installed on a shroud cut to accomodate it on my '02A4. I did have surging problems. They occured during light load, light throttle cruise conditions. It was particularly annoying as it occured at 1500-1800rpm in high gear on the freeway. I removed and reinstalled a standard shroud and eilimated the problem.
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From: Valencia Ca
Re: Blackwing cold air cover. (gjpundsack)
Don't have a blackwing but I read somewhere that the cure for the surging is to isolate the filter so that it draws only cold air.
Apparently the cold air cover does not fully seal the filter from receiving both underhood air and undershroud - one source supplies cooler air than the other and hence the surging.
Apparently the cold air cover does not fully seal the filter from receiving both underhood air and undershroud - one source supplies cooler air than the other and hence the surging.
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Re: Blackwing cold air cover. (gjpundsack)
I once had the Blackwing cold air cover installed on a shroud cut to accomodate it on my '02A4. I did have surging problems. They occured during light load, light throttle cruise conditions. It was particularly annoying as it occured at 1500-1800rpm in high gear on the freeway. I removed and reinstalled a standard shroud and eilimated the problem.
RG
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From: Greenville NC
Re: Blackwing cold air cover. (golfman)
Gains- Roughly double the gains of just the Donaldson... I beleive when they first came out a member (who had very consistant times) had a .15 sec inprovment with just the donaldson and .30 improvment with the cover added (addition .15 from cover). Makes sence, cold air makes a big improvment... you can tell from the SOTP.
Cover- Some have had surging and some havent... it tended to vary. Its because the cover is not sealed on the inside.. somehow only affects some cars. You can seal it with duck tape, it works but doesn't look good.
If your shopping for a COI I would just get a Vortex or Proflow. They offer the same gains with no issues and there cheaper.
Cover- Some have had surging and some havent... it tended to vary. Its because the cover is not sealed on the inside.. somehow only affects some cars. You can seal it with duck tape, it works but doesn't look good.
If your shopping for a COI I would just get a Vortex or Proflow. They offer the same gains with no issues and there cheaper.
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Re: Blackwing cold air cover. (ncvetteman)
Gains- Roughly double the gains of just the Donaldson... I beleive when they first came out a member (who had very consistant times) had a .15 sec inprovment with just the donaldson and .30 improvment with the cover added (addition .15 from cover). Makes sence, cold air makes a big improvment... you can tell from the SOTP.
Cover- Some have had surging and some havent... it tended to vary. Its because the cover is not sealed on the inside.. somehow only affects some cars. You can seal it with duck tape, it works but doesn't look good.
If your shopping for a COI I would just get a Vortex or Proflow. They offer the same gains with no issues and there cheaper.
Cover- Some have had surging and some havent... it tended to vary. Its because the cover is not sealed on the inside.. somehow only affects some cars. You can seal it with duck tape, it works but doesn't look good.
If your shopping for a COI I would just get a Vortex or Proflow. They offer the same gains with no issues and there cheaper.
RG
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From: Greenville NC
Re: Blackwing cold air cover. (RG in Dallas)
.15 would be roughly what, 15 HP from the cover...I wouldn't and didn't offer anyone that type of gain with that box, maybe 5 hp at best, which is about the difference between the BW and the Vortex, at speed, to start with. Just my 2 cents..not arguing with you about it.:)
RG
RG
I think nate, another forum vendor, picked up close to .2 in the quarter after adding a Cover to his donaldson on his car too.... if I remember corectly.
[Modified by ncvetteman, 1:27 PM 4/24/2002]
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Re: Blackwing cold air cover. (ncvetteman)
I agree, COI is my favorite too(Vortex for me), best bang for the buck. Some just don't feel comfortable with the shroud cut they have to do, for them the BW is the best bet. I just hate to see anyone get that BW cover and have a surging issue that will result in replacing the shroud and staring over, so to speak.
RG
[Modified by RG in Dallas, 12:29 PM 4/24/2002]
RG
[Modified by RG in Dallas, 12:29 PM 4/24/2002]
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From: Minnesota
Re: Blackwing cold air cover. (RG in Dallas)
I have the Donaldson and cold air cover. No surging here. The cold air cover is only $70 or so and a shroud is around $50. If it works for you without surging, it is a great deal. If it surges, go back to an uncut shroud and no cover for the price of the shroud. No big deal imho. :cheers:
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From: Chaska mn
Re: Blackwing cold air cover. (golfman)
The surging only happens on the 2001 and later models. Must be the different MAF sensor. Only happens at part throttle cruise. Works great on all pre 2001 C5's.
Terry
Terry
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From: valrico fl
St. Jude Donor '05
Re: Blackwing cold air cover. (TPiS)
I cant understand how the cover causes surging if it is just a tempature difference in the air. I would think that would be possible if it rained a little and lowered the air tempature suddenly you would have a surge with or without a cover. Sounds like air is entering the throttle body before it enters the maf. I have seen pictures on this forum of people cutting the shroud and installing a KN conical filter without a box and report no surging. Isnt the box just there to allow you to get just cold air instead of engine compartment air that is hotter mixing in with it. Does anyone have this cover with an 2001 or later, and have no surging.
What would happen if you just cut the shroud no box would it surge.
[Modified by golfman, 12:12 AM 4/25/2002]
What would happen if you just cut the shroud no box would it surge.
[Modified by golfman, 12:12 AM 4/25/2002]
