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Yay! New Airbox Installed!


IceDigger

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1) If it feels sluggish in the summer months you are pulling in hot under hood air.

2) Watch for heat induced problems, the intake is designed to drag air over the PCM.. you have now effectively stopped that in traffic... not to worry, a new PCM is only a couple of hundred dollars.

3) If you do a search on K&N you will see that is does not filter as good as a paper filter

But I am glad you like the meaner sound..... but at what cost? :blink:

Did they include one of these hats with it? :lol:

post-2998-1147357985.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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You gotta be kidding me?! Aren't there any easy aftermarket upgrades for this car?

Maybe I'll just stick to modding my C6.

1) If it feels sluggish in the summer months you are pulling in hot under hood air.

2) Watch for heat induced problems, the intake is designed to drag air over the PCM.. you have now effectively stopped that in traffic... not to worry, a new PCM is only a couple of hundred dollars.

3) If you do a search on K&N you will see that is does not filter as good as a paper filter

But I am glad you like the meaner sound..... but at what cost? :blink:

Did they include one of these hats with it? :lol:

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You gotta be kidding me?! Aren't there any easy aftermarket upgrades for this car?

Maybe I'll just stick to modding my C6.

No.

Yes.

These Cadillacs have small V8 engines that are already making over 1 hp/cubic inch. Many of us (myself included) have found that low-filtration filters like the K&N only subtract from the performance of the car...either via sluggishness, reduced fuel economy, lower levels of filtration, etc. I wasn't impressed with the K&N filter I put on mine (cone, just like yours) and switched back to a real air filter. I'm money ahead (except for what I wasted on the cone), and my engine is probably better off as well. My fuel economy certainly is -- it went down by a noticeable amount with the cone, as did low-end response.

My brother has a '99 C5 with a Magnusson/Lingenfelter supercharger, 4.10 gears, and a GLH exhaust. 420 hp at the wheels, probably near 500 at the crank. 0-60 in about 4 seconds according to the (inaccurate) stopwatch. That car is for modifying...not these Cadillacs.

Jason(2001 STS, White Diamond)

"When you turn your car on...does it return the favor?"

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I don't see the "airbox" in the picture. all i see is an air filter. My used grand prix GTP came with an aftermarket airfilter. its slightly more elaborate in that it has a sheetmetal airbox that seals off the hot underhood air a bit and sucks in cooler air from the frontside. not sure how it works at low speeds. supposedly the 97 yr factory airbox was somewhat restrictive. i have other mods such as exhaust, smaller SC pulley, and aftermarket pcm so I think my package works better than just a single mod like a cone air filter. but than we are talking about 2 different cars. the only way to really tell is to dyno my car and compare it to a stock version.

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Don't get upset, im busting your chops... :lol: There is very little you can do.... Your C6 is more easily modified you are correct....

There is very little you can do with this engine unfortunately..besides opening up the exhaust and safely opening the intake... If you do a search under MARK 99STS you will see some of the obstacles you run into modifying this platform. One of the biggest choke points is the crossover pipe under the engine. A free flowing cat back system will help.

You want a cold air induction unit, see Bruce's unit, the air filter is in a box, and continues to function as a PCM cooler... If you have a hard time finding Bruces CAI let me know, I will find it.. I am not sure they have one for your model and year...but you might be able to fabricate something from the stock box..

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Once the car is moving there is plenty of air flow under the hood. The issue the drag racers run in to is with the car sitting at the line it is only getting hot air. This matters more in 0-60 times than in real life driving. Certainly it is better to have the system be water tight, and to get as cool air as possible without restricting flow though.

Bruce

2016 Cadillac ATS-V gray/black

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1) If it feels sluggish in the summer months you are pulling in hot under hood air.

2) Watch for heat induced problems, the intake is designed to drag air over the PCM.. you have now effectively stopped that in traffic... not to worry, a new PCM is only a couple of hundred dollars.

3) If you do a search on K&N you will see that is does not filter as good as a paper filter

But I am glad you like the meaner sound..... but at what cost? :blink:

Did they include one of these hats with it? :lol:

At the risk of inferring what BodybyFisher has already implied, let's be honest: Cadillac engineers jumped through hoops to deliver (as JasonA said) in excess of 1 hp/ci. Do you suppose the best engineers in the world might have neglected an extra horsepower or ten if it was within their grasp to find it so cheaply? I think not.

I'm reminded of the infomercials I used to see years ago that promised you might add this little foil sticker inside the battery compartment of your cellphone and gain added range. It was supposed to "concentrate" your cellphone energy (Doh!). You'll note that no cellphone manufacturer ever added these stickers to their units, even though they only cost thousandths of a dollar per unit.

Just go with what makes sense.

Regards,

Warren

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There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises

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Do a search for posts filtered by member name for "MARK 99STS". Read all his posts.

The ante for measureable performance gain is $10K.

Jim

Drive your car.

Use your cell phone.

CHOOSE ONE !

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Hello Friend,

I have the very same thing you have hooked up to your car. I had it on for about a year. One day I decided I wanted to hook the old box up with a K&N dropp in filter . My gas mpg has went up and theres no more noise from the so called proforamce air intake upgrade..... I was less than impressed :))

Michael-

Mass Air FLOW Sensor ! hehe

Yes and the local Cadillac dealership claims that theres oils on the K&N filter that is damaging to the MAF Sensor.

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Bill can you send me one of those hats? :lol:

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Why would you even drive the Caddy with Vette in the garage (unless it's snowing or you have more than one passenger)... the C6 probably gets 5 MPG better anyway! Just put some dynomax mufflers on the Caddy so it sounds good, and drive the Vette when you want to go really fast! I'm suprised Body By Fisher didn't inform you that you could hydra-lock your engine with that intake set-up... that seems to be his favorite topic for engine damage!

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Why would you even drive the Caddy with Vette in the garage (unless it's snowing or you have more than one passenger)... the C6 probably gets 5 MPG better anyway! Just put some dynomax mufflers on the Caddy so it sounds good, and drive the Vette when you want to go really fast! I'm suprised Body By Fisher didn't inform you that you could hydra-lock your engine with that intake set-up... that seems to be his favorite topic for engine damage!

Yea I really dropped the ball on that one shame on me. Seems you think I am bias. However when a hole appears in the side of a Northstar hydrolocking is one of the possibilities. If that makes me bias in your mind that's too bad. Since this forum is open to all ideas you are free to state your opinion assuming you can support it as unsupported opinions are just that, unsupported.

I have seen two NS's blow a rod through the side 1) the GM tech used too much top engine cleaner and it was sucked into the engine and 2) a member was sitting at a gas pump and the engine spontaineously blew a rod through its block. It was later determined that the engine has its pistons replaced and most likely the cap bearing was not properly tightened.

There was one other instance where the guru was helping to diagnose a knock and the owner WOT'd his engine with the knock and blew it.. I don't know the reason for that failure, but the guru was stunned as failures like that are rare.

If NS engines BLEW because they sucked.... with this board and the cadillacforums board members regularly doing WOT's, we would hear about catastrophic failures more often. BodybyFisher (Scotty)

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Warren is on the right track - there's no free horsepower these days. Engines are engineered very tightly and short of some major modifications there's not much the shade tree mechanic can do that won't undo someting else.

Do what makes sense!

Scott

1996 El Dorado

2006 STS

2000 Corvette

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Jim, ... Then to Costco for a rotate and balance... then to the highway.... Mike

Hey Mike,

Why not get the tires rotated & Balanced Prior to Alignment so the

right tires are on the car in the right order for the alignment?

I have noticed plenty of times, my alignment appears to be off only

after I have rotated the tires..

Just my .02

jim

1) If it feels sluggish in the summer months you are pulling in hot under hood air.

2) Watch for heat induced problems, the intake is designed to drag air over the PCM.. you have now effectively stopped that in traffic... not to worry, a new PCM is only a couple of hundred dollars.

{Mike! PRICELSS!!!}

3) If you do a search on K&N you will see that is does not filter as good as a paper filter

But I am glad you like the meaner sound..... but at what cost? :blink:

Did they include one of these hats with it? :lol:

You Slay me!

The F'in picture is the funniest thing I've seen in quite a while..

nice job!

jim

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