Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

FIPK hood down - DYNO - question & graph

Thread Tools
 
Search this Thread
 
Old May 6, 2003 | 09:17 AM
  #1  
Zeta's Avatar
Thread Starter
TECH Apprentice
 
Joined: Jan 2002
Posts: 302
Likes: 0
From: olathe, ks
Default FIPK hood down - DYNO - question & graph

Long ago WeatherGuy tested the performance of a K&N FIPK II with the hood down on his 422. That dyno showed a significant HP/TQ loss across the entire RPM range vs hood down and a regular lid.

Has anyone else bothered with a similar test?


It is true the IAT temperatures are higher with the FIPK vs a lid, and that helps explain a lot.

This is a link to the dyno: http://community.webshots.com/photo/...34464356TsKyvG
Reply
Old May 6, 2003 | 11:03 AM
  #2  
CAT3's Avatar
Restricted User
iTrader: (9)
 
Joined: Sep 2002
Posts: 7,603
Likes: 0
From: Sierra Vista, AZ
Default Re: FIPK hood down - DYNO - question & graph

Can't really offer exacting data, but I dyno'd last saturday with FIPK and then Lid w/ KN filter. With hood open I lost 1hp and picked up 1#tq going to the lid combo, but mostly due to lack of cool down, to better simulate the conditions for pull w/FIPK. Also, while using autotap, noticed about a 10-17* temp raise using the FIPK with hood closed. So, for what it is worth thats my data!
Reply
Old May 7, 2003 | 09:45 AM
  #3  
Zeta's Avatar
Thread Starter
TECH Apprentice
 
Joined: Jan 2002
Posts: 302
Likes: 0
From: olathe, ks
Default Re: FIPK hood down - DYNO - question & graph

Thanks Cat.

If what I have observed is accurate, the expectation is that off of the line performance is likely to be affected by the the possibilty of higher intake air temps.

Otherwise power is equal or better than the lid. You no longer have to deal with an ill fitting aftermarket lid. I have tried two of them and neither of them have left a postive overall impression.
Reply
Old May 7, 2003 | 12:32 PM
  #4  
Magnus's Avatar
LS1TECH Sponsor
iTrader: (4)
 
Joined: Nov 2001
Posts: 2,404
Likes: 0
From: Chicago, IL
Default Re: FIPK hood down - DYNO - question & graph

K&N FIPK with a hood that can help is definately a great intake setup. Not the greatest idea for a stock hood person though.

I use the LS1 K&N FIPK in my LS1 swap into my 97 firebird with a suncoast predator hood and it works GREAT.
Reply
Old May 8, 2003 | 01:10 PM
  #5  
Chivalry101's Avatar
Launching!
 
Joined: Nov 2002
Posts: 223
Likes: 0
From: Houston, TX
Default Re: FIPK hood down - DYNO - question & graph

Zeta,

I have the FIPK, and made improvements to it (or ratner my hood) and got cooler temps and better air flow. Wanna see pics? If desired, you can also modify the plate that sits over the radiator, and use the FTRA with the FIPK. Email me @ LucasHarp@EV1.net if you want pics.
Reply
Old May 8, 2003 | 01:32 PM
  #6  
pirate3's Avatar
TECH Regular
iTrader: (11)
 
Joined: Mar 2002
Posts: 433
Likes: 0
From: KANSAS CITY, MISSOURI
Default Re: FIPK hood down - DYNO - question & graph

Interesting. I have the FIPK with a stock hood and SLP ram-air setup. Maybe I should try a lid just for kicks.
Reply
Old May 9, 2003 | 11:33 AM
  #7  
unstable Vic's Avatar
TECH Enthusiast
iTrader: (6)
 
Joined: Jan 2002
Posts: 520
Likes: 4
From: Long Island, NY
Default Re: FIPK hood down - DYNO - question & graph

mine(fipk) lost 9hp on the dyno, with hood open and a big *** fan on the motor over a slp $90 lid and kn filter. They look good, sound great, but suck imho. The dyno operator said he never saw one perform as good as a lid. He cited turbulance as the culprate
Reply
Old May 9, 2003 | 07:06 PM
  #8  
Mr. B's Avatar
11 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Feb 2002
Posts: 3,934
Likes: 0
From: NY
Default Re: FIPK hood down - DYNO - question & graph


I lost 5hp when I lowered the hood w/ the FIPK.. despite two fans and a vain attempt to provide extra air with a modified Fast Toys Ram Air setup. It also caused problems trying to tune with LS1 edit.



Put the lid back in.. all's well again.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo




All times are GMT -5. The time now is 02:39 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE