ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 General Postings

Reply
 
Thread Tools Display Modes
Old 04-09-2012   #1
cvette98pacecar
 
Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
Default SLP cold air intake.

Has there been any studies on the SLP cold air intake? Is it worth $300.00
__________________
Robert J. DeMarco

[SIGPIC][/SIGPIC]
[COLOR=blue]G[/COLOR][COLOR=red]rand[/COLOR] [COLOR=blue]S[/COLOR][COLOR=red]port[/COLOR] Registry Lifetime Member
NCM Lifetime Member #2655
Pacecar Registry Member
[COLOR=red]ZOOM Charter Member - ZR-1 Owners of Michigan[/COLOR]
[COLOR=plum][I]ZR-1[/I] Registry member since 2012 [/COLOR]
[COLOR=black]1990 LPE "368" Aerobody ZR-1, Last ZR-1 built by John[/COLOR]
1991 Callaway Aerobody ZR-1, DRM 500
1991 Shinoda Aerobody Spyder,
1998 Pace Car
cvette98pacecar is offline   Reply With Quote
Old 04-09-2012   #2
Blue Flame Restorations
 
Blue Flame Restorations's Avatar
 
Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
Default Re: SLP cold air intake.

I've got one I'll sell you after I get my stainless air box.
__________________
1988 KOH Prototype EX5023 sold
1990 ZR-1 #444 Convertible
1990 ZR-1 Black #966
1991 ZR-1 Quazar Blue #296
1957 Duntov SS Project
Blue Flame Restorations is offline   Reply With Quote
Old 04-09-2012   #3
cvette98pacecar
 
Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
Default Re: SLP cold air intake.

Quote:
Originally Posted by Blue Flame Restorations View Post
I've got one I'll sell you after I get my stainless air box.
I have one of the stainless coming for the Purple car, this is for the Ruby car.
__________________
Robert J. DeMarco

[SIGPIC][/SIGPIC]
[COLOR=blue]G[/COLOR][COLOR=red]rand[/COLOR] [COLOR=blue]S[/COLOR][COLOR=red]port[/COLOR] Registry Lifetime Member
NCM Lifetime Member #2655
Pacecar Registry Member
[COLOR=red]ZOOM Charter Member - ZR-1 Owners of Michigan[/COLOR]
[COLOR=plum][I]ZR-1[/I] Registry member since 2012 [/COLOR]
[COLOR=black]1990 LPE "368" Aerobody ZR-1, Last ZR-1 built by John[/COLOR]
1991 Callaway Aerobody ZR-1, DRM 500
1991 Shinoda Aerobody Spyder,
1998 Pace Car
cvette98pacecar is offline   Reply With Quote
Old 04-09-2012   #4
Paul Workman
 
Paul Workman's Avatar
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
Default Re: SLP cold air intake.

As I recall, the total surface area of the three cone filters was a little more than the stock or even the flat K&N. Theoretically, that would be advantageous, I suppose. But, sorry...No data for comparison.

P.
__________________
Good carz, good food, good friendz = the best of timez!

90 #1202
"FBI" top end ported & relieved
Cam timing by "Pete the Greek"
Sans secondaries
Chip & dyno tuning by Haibeck Automotive
SW headers, X-pipe, MF muffs

Former Secretary, ZR-1 Net Registry
Paul Workman is offline   Reply With Quote
Old 04-09-2012   #5
PhillipsLT5
 
PhillipsLT5's Avatar
 
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,452
Default Re: SLP cold air intake.

Locobob did a comparison, looked like 1 to 3 hp gain with the claw if I remember correctly
PhillipsLT5 is offline   Reply With Quote
Old 04-10-2012   #6
Locobob
 
Join Date: Jan 2004
Location: Portland, OR
Posts: 1,057
Default Re: SLP cold air intake.

Here is the old post from the CF. Results for peak HP were within margin of error but notice the average HP and Torque numbers show a small gain.


Today myself and forum member/dyno owner TJ Wong set out to find the truth regarding C4 air intakes. We dyno tested 3 different air intakes on my Lingenfelter 368cid LT5. Tested today were: stock with paper element, stock with K&N element and a cut lid, and finally SLP's "claw" tri-cone filter design. All dyno pulls were made with starting coolant temps at 195 degrees F. Here are the results.

Stock with paper, two identical pulls: 477rwhp. Avg. peak HP 477

Stock with K&N and cut lid, three pulls: 471, 475, 480rwhp. Avg. peak HP 475.3

SLP tri-cone "claw", three pulls: 477, 478, 481rwhp. Avg. peak HP 478.7

It would appear that the naysayers are mostly correct about C4 air intakes, not much to be gained here. Both Tom and I were rather suprised with the results. We had expected to see some small but visible gains with the cut-lid and SLP, instead we got a bunch of tests with peak numbers being basically the same or well within normal dyno pull to pull variation. The SLP unit does seem to have a small advantage over the others but suprisingly it's in mid range power not peak (see dyno graph average power #'s).


__________________
Robert

ZR-1 Net Registry Oregon State Director

91 ZR-1 #431 Black/Black LPE 368

Last edited by Locobob; 04-10-2012 at 03:30 AM.
Locobob is offline   Reply With Quote
Old 03-29-2016   #7
Johnny5
 
Join Date: Nov 2014
Location: New Jersey
Posts: 363
Default Re: SLP cold air intake.

Figures. The stock intake is already a cold air intake. Waste of $$$$ for SLP although it looks cool
Johnny5 is offline   Reply With Quote
Old 03-29-2016   #8
KFoster
 
Join Date: Jan 2015
Location: Decatur, AL
Posts: 93
Default Re: SLP cold air intake.

I have the SLP. Came on the car. I like it, but no flow numbers on it or comparison to anything else. I prefer conical filters to flat myself, but usually use them on blown applications.
Attached Images
File Type: jpg IMG_3438.jpg (150.2 KB, 54 views)
__________________
1990 ZR1, 1987 Mustang GT (since new), 1973 DeTomaso Pantera, 1987 928S4

Passed on: 1984 930S (gray market), 1988 Mustang Coupe Trooper car(drag)
KFoster is offline   Reply With Quote
Old 03-30-2016   #9
ghlkal
 
ghlkal's Avatar
 
Join Date: Jan 2012
Location: Wisconsin
Posts: 887
Default Re: SLP cold air intake.

Mine had the claw on it when I bought it. I doubt I would pay $300 for it based on performance, but it does look cool.
__________________
1990 ZR-1 #2180 Red/Black
Many of the usual mods for 460HP, tuned by Marc Haibeck
ZR-1 Net Registry Member #1548
ghlkal is offline   Reply With Quote
Old 03-30-2016   #10
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
Default Re: SLP cold air intake.

Quote:
Originally Posted by Locobob View Post
Here is the old post from the CF. Results for peak HP were within margin of error but notice the average HP and Torque numbers show a small gain.


Today myself and forum member/dyno owner TJ Wong set out to find the truth regarding C4 air intakes. We dyno tested 3 different air intakes on my Lingenfelter 368cid LT5. Tested today were: stock with paper element, stock with K&N element and a cut lid, and finally SLP's "claw" tri-cone filter design. All dyno pulls were made with starting coolant temps at 195 degrees F. Here are the results.

Stock with paper, two identical pulls: 477rwhp. Avg. peak HP 477

Stock with K&N and cut lid, three pulls: 471, 475, 480rwhp. Avg. peak HP 475.3

SLP tri-cone "claw", three pulls: 477, 478, 481rwhp. Avg. peak HP 478.7

It would appear that the naysayers are mostly correct about C4 air intakes, not much to be gained here. Both Tom and I were rather suprised with the results. We had expected to see some small but visible gains with the cut-lid and SLP, instead we got a bunch of tests with peak numbers being basically the same or well within normal dyno pull to pull variation. The SLP unit does seem to have a small advantage over the others but suprisingly it's in mid range power not peak (see dyno graph average power #'s).



Bob,

It would be interesting to see if anything changes regarding the AFR with these.
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman
Former ZR-1 Registry - BOD
1972 Corvette 4speed base Coupe SOLD long time ago
1984 Corvette Z-51/4+3 SOLD
1992 Corvette ZR-1 Aqua/Gray #474 SOLD
1992 Corvette ZR-1 Black Rose/Cognac #458
2014 Honda VFR Interceptor DX
XfireZ51 is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:42 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020