Anyone know the hp gain with a K&N? Not what the company claims, I'm wondering if anyone has some real dyno results. With/or without open element cleaner?

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---Grady---
1984 Berlinetta.
LG4 305, 150 hp.
Rochester Quadrajet(Comp. Controlled)
TH-700R4.
Flowmaster 80 series/ 3" cat-back pipe.
Accel Superstock Coil.
7.5 10-bolt rear/ 3.08's.
Edelbrock signature series air cleaner -w- K&N Filtercharger.
Pioneer head unit, Pioneer front 4X6's, Cerwin Vega rear 6x9's.
Daily Driver.

Personal Quote: "The Rice-Boys all tremble with fear when the old American V8 draws near."

i wouldn't say you get all the much hp gains i don't know how much. but i have one and i can tell you that you can feel the difference and hear it when you go WOT.
that is my .02$

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86 Z28:
350 vette engine
aluminum heads
235/60R15 BFgoodriches
dual 3"flowmaster exhaust
20% tint
hatch wing
2 12"kicker solos
300 watt Sony xplod amp
Sony xplod deck
K&N air filter

i wouldn't say you get all the much hp gains i don't know how much. but i have one and i can tell you that you can feel the difference and hear it when you go WOT.
that is my .02$

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86 Z28:
350 vette engine
aluminum heads
235/60R15 BFgoodriches
dual 3"flowmaster exhaust
20% tint
hatch wing
2 12"kicker solos
300 watt Sony xplod amp
Sony xplod deck
K&N air filter

The K&N I had fit into the stock air cleaner and was pretty much a waste of money. Since you have the open-element i suppose most of the power that you notice is from the open design of the air cleaner. I guess the butt dyno gives the open element 7hp tops, filter 1 hp

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--Steve S--
1984 Trans Am 305 LG4, 5 speed Daily Driver, Flowmaster 80 Series
Holley 600 cfm & vacuum advance Soon: Edlebrock Intake & TES

Your butt-o-meter must have a malfunction because mine clearly gave me:

Open air element - 7.2HP
K&N filter - 0.8HP

Get yours checked out by a dealer or return it back to Jegs!



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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...

-=ICON Motorsports=-

So basically, I should have spent my 40 bucks on something else?

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---Grady---
1984 Berlinetta.
LG4 305, 150 hp.
Rochester Quadrajet(Comp. Controlled)
TH-700R4.
Flowmaster 80 series/ 3" cat-back pipe.
Accel Superstock Coil.
7.5 10-bolt rear/ 3.08's.
Edelbrock signature series air cleaner -w- K&N Filtercharger.
Pioneer head unit, Pioneer front 4X6's, Cerwin Vega rear 6x9's.
Daily Driver.

Personal Quote: "The Rice-Boys all tremble with fear when the old American V8 draws near."

Give this man a prize! I guess it ranks in there with MSD boxes, chips, high voltage coils, 8mm wires, 160 thermostats, and the like. Not going to hurt... not going to help much either. If you need to replace the stock, might as well go with it then.



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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...

-=ICON Motorsports=-

Well the butt dyno also doubles as a ricter scale, during release so it might have still been changing modes that thing sure stinks
:P

Ah, its ok though. One thing to be said about K&N is the reuseability. Ive had mine for a year, and I'm gonna buy the recharger kit for it. At least I wont have to worry about buying a new filter again.(not that its a huge worry, but one less worry is worth a lot when it comes to cars.)

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---Grady---
1984 Berlinetta.
LG4 305, 150 hp.
Rochester Quadrajet(Comp. Controlled)
TH-700R4.
Flowmaster 80 series/ 3" cat-back pipe.
Accel Superstock Coil.
7.5 10-bolt rear/ 3.08's.
Edelbrock signature series air cleaner -w- K&N Filtercharger.
Pioneer head unit, Pioneer front 4X6's, Cerwin Vega rear 6x9's.
Daily Driver.

Personal Quote: "The Rice-Boys all tremble with fear when the old American V8 draws near."

My K&N filter was the first mod I ever bought for my car about 5 years ago. I also got a thermomaster chip and 160 stat at the same time and received a 12.4 HP gain with the open element and chip/stat. I also put platinum plugs in too...so that could be a very small part of it as well.I even put one in my wifes Mazda 626. Just the fact of never having to replace it again is worth it. If you don't get a gain you notice with your K&N consider this....you may need to open up the exhaust side of your car as well, and adjust fuel pressure/delivery up to compensate for the added air your engine is getting. I am sure you will notice a difference if you get everything dialed in right. Even if you get only a 7 HP gain, that is very cheap HP. $5.71 per 1 HP roughly. And no I am not a K&N salesman, just a satisfied customer for over 5 years.

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Formerly known as 1984L69Z28

1984 Z28 - L69 optioned, 350HO w/ Trick Flow Heads, Drop Forged Lunati Crank, Crane Cam and 1.5 Roller Rockers, Stock Z28 Intake Manifold, Highly Tweaked Rochester Carb(700cfm), K&N Filter, ThermoMaster Chip w/ 160 Stat, Comp Headers, 3" Stainless Dual Exhaust w/ no Cat & Dynoflow Muffler, 4 wheel disc brakes, etc....

God bless us father, son, and holy ghost....whoever goes the fastest wins the most!!