0 gain?

Once installed, the car needs to be driven and the pcm relearn needs to be implemented.

I definately recieved a 15- 25 RWHP gain from my Donaldson.

 

It depends on what you start with!

All C5s before 2000 had the very restrictive airbox; completely closed in the front and 4 small holes in the rear. The 2000 airbox was re-designed and had a small opening in the front, and I believe the 2002 Z06s have an even less-restrictive airbox design.

I would expect little or no increase on a 2002 Z06.. It took GM 6 years to get the airbox design right!

But if you have a pre-2000 C5, the Donaldson will give you a HP kick, IMHO. I felt it on my 98.



[Modified by SDVette, 8:56 AM 9/4/2001]

 

I dynoed before and after the Blackwing install on my 99. There was no difference at all below 5,000 RPM but the car gained about 8 - 10 lb/ft of torque above about 5,200 RPM, and that was compared to the stock intake box with a K&N filter in it.

That's not much, especially when it only occurs in the last 800 RPM, but it is definitely there. Besides, I got the BlackWing mostly due to it's rugged design and the fact that my stock box was letting rather large debris past due to a horrible construction/design.

Mike

 

HEY SCOTT OR ANYONE ELSE, HOW DO YOU DO THE PCM RELEARN AFTER INSTALLING THE BLKWING, THANKS

 

Drive it for 50 miles or so or look for the right fuses to pull. I am sure it is posted on the forum some place. I think the BlackWing has helped but the DYNO does not lie or does it ?

 

[QUOTE
I definately recieved a 15- 25 RWHP gain from my Donaldson.
[/QUOTE]

I have got to tell you that 15 - 25 doesn't sound definite to me. :rolleyes:

What makes you so sure that your gain was within this range?

 

I'll tell you why:

I've definately never seen a stock 99 C5 pull 320 RWHP or 333 RWT.

I've definately seen them pull between 290 - 305 RWHP at different dyno events that I've either been a spectator or participant at.

Below is my dyno sheet with just the Donaldson and Corsa exhaust.




001]


[Modified by Scott97, 8:09 PM 9/4/2001]

 

The blackwing does filter better than the stock paper element. The oil/fiber combo allows more air to flow, the oil attracts and hold the dirt/dust particles.
The donaldson is more dense than the K&N filters. It was designed for use in desert storm.. can't imagine a worse envoirnment for an engine.
mike :chevy

 

The intake is still the most effective mod for the hp/$$$. The gains decrease somewhat as you get into the '01 and '02 cars, as GM improved the stock intake. On my 2000, I gained 8 hp instantly without any relearn with a Vortex-I dynoed, pulled the car off, installed for 2 hours in the parking lot, and dynoed again, after the day had heated up, and still got my gains across the board. The chart is here:
http://www.angelfire.com/az/macsdead

There are definite gains to be had, and among underhood systems, I feel that the Blackwing is definitely the best!
Sam

 

You should tell that guy his SOP is not working very well, a car sitting strapped to a dyno in some building with static airflow is not going to feell any thing different in his SOP,
any difference in any filter his what's you call it in his SOP needs to recall the car has to be moving through the air to do any valid highlevel SOP testcases.

My brain in my SOP says even having no filiter while doing a chassie dyno has a zero gain but maybe his SOP is supercharged :U

John

 

John,

You're up too late. Get some sleep.

You don't need to be moving to get an increase in hp. The engine will do it for you -- because it's doing the moving -- it's sucking in the air, and the more it sucks, the better it feels.

Hope this helps. :cheers:

 

I agree but not the same as claims made about one filter over the other while on a dyno, with the car sitting in still air, the engine is a pump yes, but unless filter A is a big slug over filter B, the pump should pull the same amount of air in either, thus that type of SOP test does not prove one filter is better then the other versus real world where some ram air effect is ocurring. Also the lack of pushing through the air would mean IAT is higher, causing some performance loss depending how lean the engine was running.
Testing we did a few weeks back on a chassie dyno showed a 2 HP, 2 ft/lb torque loss just from a IAT difference.

In other words, making a decision of a filter brand on a chassie dyno does not make the cut in that the air is being pulled in without any ram effect that would cause more swirling airflow and then depending on vendors design would one maybe perform better enough to see a rear wheel result change.

It all ends up to me really that this SOP stuff does not work and I'd rather buy a product with more expensive test tools being used then a SOP wiget.

Serious now, the shape of the airfilter can be more important then the type of paper it uses. The K&N round shape to me does not allow the air to straighen out as well as the much larger, flat walls of a Donaldson and being that vendor has made filters for airplanes for many years, I would trust it over the K&N design and think that vendor bad mouthing Donaldson should show some valid testcases and leave SOP testing to nuts and bolts :bs

John ( just pulling some chains ;)

 

"The K&N round shape to me does not allow the air to straighen out as well as the much larger, flat walls of a Donaldson"

This is just the opposite of the vendor's viewpoint at Bowling Green. The K&N shape allowed for the biggest bang for the buck. The Donaldson allowed for/created too much turbulence so the HP and torque was lost.

Again I have a BlackWing and will stick with it. I know my measurement is just SOTP but the car just "pulls" better with the Donaldson over the stock airbox and filter. :nono:

 

Sounds like turbulence coming from the mouth of a vendor who wants to sell a K&N. :bs

Mike

 

I think all aftermarket airboxes will show an improvement. I've had good luck with my Blackwing and also my Halltech Tric.

 

I would like to see some dyno runs as follows:
1. With no air box or anything just straight off the Throttle body & MAF
2. With the Blackwing
3. With the halltech
4. Then that one that tee's into two pipes
5. And bone stock

All done by a independent Co.
:yesnod: :yesnod: :yesnod:

 

1. With no air box or anything just straight off the Throttle body & MAF
2. With the Blackwing
3. With the halltech
4. Then that one that tee's into two pipes
5. And bone stock
6. With stock 2002 Z06 airbox and stock filter

All done by a independent Co.

 

Well hell, you might as well throw the Vortex into the fray too.... I'd like to see how it performs (even without forward motion). Right now I have the Blackwing/Vortex debate raging again after hearing about all the hydrolock problems.

 

1. With no air box or anything just straight off the Throttle body & MAF
2. With the Blackwing
3. With the Vortex - Halltech is history as a CF vendor ?
4. Then that one that tee's into two pipes
5. And bone stock
6. With stock 2002 Z06 airbox and stock filter

All done by a independent Co.

 

I e-mailed the vendor that trashed the BlackWing at Bowling Green. I let him know I would buy two used BlackWings at his price. He said he had several just laying around since they were not as good as the K&N. Well I am still waiting on a response about those used BlackWings.