MAGNAFLOW 3" High Flow cats / 3" cat-back

9529 Views 45 Replies 13 Participants Last post by jconnolly1119, Feb 21, 2006

btlfed1500

Discussion Starter · Nov 30, 2005

400 rwhp ... so close but then again 397 is not so bad

MAGNAFLOW 3" HIGH FLOW CATALYST #16420

MAGNAFLOW 3" CAT-BACK p/n 16642 / 3" HIGH FLOW CATALYST p/n 16420

Here are the numbers you have been waiting for:

Stock Baseline: 377 rwhp / 378 lb-ft
MagnaFlow 3" High Flow Cats: 386 rwhp / 389 lb-ft
MagnaFlow 3" High Flow Cats / 3" Cat-Back: 397 rwhp / 400 lb-ft

MAX HP gain: 24 @ 5300 rpm
MAX TQ gain: 25 @ 4700 rpm

PEAK HP gain: 20
PEAK TQ gain: 22

Our Cat-Backs tend to produce 11-15 rwhp (conservatively with others seeing up to 20) and the MagnaFlow High Flow Cats produce another 7-8 rwhp on their own. The combination nets 20 SOLID rwhp and across the entire curve. I'm sure additoional testing would have netted a 400 RWHP number but what is 2.2 rwhp

Thanks again to Chris (Cbutler32) for dropping by to have us faciliate the install and dyno. He was more than patient while we worked on our next TV appearance filming here at the MagnaFlow Tech Center but hopefully he was entertained while getting to observe the entire installation and testing. From the smile on his face when he was here I'm sure he's enjoying the ride home.

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cbutler32

· #5 · Dec 1, 2005

Richard...

Thanks again to Chris (Cbutler32) for dropping by to have us faciliate the install and dyno. He was more than patient while we worked on our next TV appearance filming here at the MagnaFlow Tech Center but hopefully he was entertained while getting to observe the entire installation and testing. From the smile on his face when he was here I'm sure he's enjoying the ride home.

It is still like this... :biggrin: :biggrin: :biggrin: :biggrin: :biggrin:

Thanks!
It was worth the wait - trust me!!!
And I might need to find a bro who can hook me up on tires after seeing the little amount of rubber left on the rears at 8800 miles... :bigeyes2:
holy smokes!!!
As they are really starting to "slide" all the way through first now - :wink1:
And I have no problem coming back when we have time to get that elusive number of 400 RWHP - :wink1:
Once again, THANKS!
Sincerely,

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cbutler32

· #7 · Dec 1, 2005

squinn...

funny you should mention that...
the demand has been very light on this item...
probably because everyone has been waiting for these numbers to be posted...
so now they are available and once the demand is there from everyone here...
then the supporting vendors will buy them and make them available at a price they set and as for a group buy that would be up to the supporting vendors as well...
I know once everyone see's the gains...
this is a no brainer...
and if you have the magnaflow cat-back exhaust...
you really outta get the high flow cats...
if the demand is there on this expect a Jan. time frame...

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cbutler32

· #11 · Dec 1, 2005

hey guys...

4herb2trasotik - ok, I'll try a stab at it also...
stock car with no exhaust upgrades... 377.42 RWHP
add the 3" High Flow Cats upgrade - 386.67 RWHP
a +9.25 gain in RWHP
add the production cat-back exhaust system and combine the 3" high flow cats... 397.38 RWHP
a +19.96 gain in RWHP

So that equates to a +10.71 RWHP gain on the Magnaflow cat-back exhaust system as an upgrade alone...

I know , I know , I know...
the dyno's are totally different forthe magnaflow cat-back exhaust system and have a greater gain than the +10.71...
but we ran it today 3 times and the 397.38 was with both systems on the car...

whitediamond is right on the mileage thing as we were dyno'ed at the same place...
my HP went up to 377.42 base from 374.53 with another 5,000 miles on her...
his magnum would probably run higher now if he ran it...

Hope this helps...
and doesn't confuse more...
if it does or if I am wrong...
have btlfed1500 chime in...

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cbutler32

· #13 · Dec 1, 2005

freakyshiat...
no it is not...
yet...
the vendors have to start ordering them...
the price should be around $450.00 at msrp...
but with group buys and interest...
who knows...

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cbutler32

· #16 · Dec 1, 2005

freakyshiat...

well I am not the candidate to be the guinea pig for the headers for Kooks...
But I know someone who is and who will have their car at Magnaflow next week...
btlfed1500 (richard) will pull off the cat-back exhaust that is currently on the car now and run it with the header only and a stock exhaust I believe then run the header with the magnaflow cat-back system...
and hopefully run it with the the high flow cats as well...
so we will see in a week or so...
maybe it is a good upgrade...
maybe it is not...
we'll just have to see...
heck it took 3 months to get the numbers we put up today from when we thought we were going to do it...
so we'll see soon...

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cbutler32

· #24 · Dec 1, 2005 (Edited)

XCITsNU said:
Just out of curiosity... What was the ambient temp and barametric pressure at? Also was wondering if you ahve ever pulled the battery cable on your car Chris. If so when and at what mileage. I am thinking of resetting mine and driving like a lead footed gorilla for a while to learn this baby back up to where I think it was when I drove it off the lot, which I think was around 370 rwhp. My recent dyno of 385, just seems weaker than it should be. I am thinking the Hogh Flow cats will get this think up to around the numbers you are putting down.

72.99 degrees F; 29.19 in-Hg; humidity 25%...

I have never pulled the battery cable.
I think they did back when I got the oil changed at 3,500 miles to do a couple of things other than the oil change...
I can tell you that there is a difference...
and I am getting one of those GPS units soon...
so that should help with numbers...
and I might even try going to the track this Sat.
never have before though...
so I could do this to myself - :nutkick:

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cbutler32

· #25 · Dec 1, 2005

4herb2tas0tik said:
hey chris, thanx man for taking the time to clear it up for me...so ive come to the decision to add the high flow cats it makes good sense to open her up all theway back..still havent decided on the headers i coulda swore i read it only added 5 or so rwhp gain...?but ill wait for a few more posts on that one...$1500 for the headers and $800 to install thats a pretty penny, to me anyway..

herbs - btlfed1500 - answers it pretty well in the very next post after yours.
it will be interesting to see what the numbers are from next week's dyno with the kooks headers...
and HE is the MAN for numbers and the reasons behind and why the numbers end up like they do...

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cbutler32

· #32 · Dec 1, 2005

how is that for character and professionalism...
that is a company I can stand for and be proud of that I have their equipment on my car...
So I did get to 402 RWHP after all... :wink1:
btlfed1500 - guess we'll have to spend some time on the dyno when we do the re-alignment...
and make more than one run crammed into between your video shoots for TV shows... :wink1:

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cbutler32

· #36 · Dec 2, 2005

Doyle said:
Congrats cButler on your numbers and your ride! I kind of wish I would have felt my car with just the magnaflows and high flow cats BEFORE I put on the Kooks, just so I could feel just how much difference the Kooks made on the street. I kind of got carried away and did it all at once. May your leg rehabilitate as fast as your car now accelerates!

Mark,
trust me it is better to do it all at once!
The cat-back exhaust went on in August and the "cats" just went on yesterday...
I'm waiting to see the results on the Kooks gain stand-alone from next week's pending dyno test...
Thanks for the props...

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