SLP cold air intake. - ZR-1 Net Registry Forums

cvette98pacecar · 04-09-2012

Has there been any studies on the SLP cold air intake? Is it worth $300.00

Blue Flame Restorations · 04-09-2012

I've got one I'll sell you after I get my stainless air box.

cvette98pacecar · 04-09-2012

Quote:

Originally Posted by Blue Flame Restorations

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.

Paul Workman · 04-09-2012

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.

PhillipsLT5 · 04-09-2012

Locobob did a comparison, looked like 1 to 3 hp gain with the claw if I remember correctly

Locobob · 04-10-2012

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).

04-09-2012	#1
cvette98pacecar Join Date: May 2011 Location: Sydney, Australia Posts: 2,479	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

04-09-2012	#2
Blue Flame Restorations Join Date: Feb 2010 Location: Pendleton, IN Posts: 3,904	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

04-09-2012	#4
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	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

04-09-2012	#5
PhillipsLT5 Join Date: Aug 2005 Location: Scottsdale, AZ Posts: 2,452	Re: SLP cold air intake. Locobob did a comparison, looked like 1 to 3 hp gain with the claw if I remember correctly

04-10-2012	#6
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,057	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.