5 More Reasons to go with PPE headers
09-17-13, 09:28 AM
#17
but also to reduce the raspiness of the catless system. Making it less loud and sounding more exotic IMO.
I am just scared of not passing the sniffer. (not worried about the visual)
09-17-13, 10:18 AM
#19
Yeah, I would put a set of RandomTechnology hi-flow cats on the X-pipe, for the kids outthere
but also to reduce the raspiness of the catless system. Making it less loud and sounding more exotic IMO.
I am just scared of not passing the sniffer. (not worried about the visual)
but also to reduce the raspiness of the catless system. Making it less loud and sounding more exotic IMO.
I am just scared of not passing the sniffer. (not worried about the visual)
09-17-13, 10:33 AM
#20
Has anyone measured the gains from the PPE headers with cats vs without cats? Obvious it would be less, but how much less?
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
09-17-13, 10:44 AM
#22
Thumbs up for figgs. Got my brake pads and headers in a heartbeat. Great recommendation, my brakes don't squeal and the pads feel amazing!!! Thanks Figgs +1 for A++ service and fast delivery. Getting my smog this week here in CA. Ill let you guys know how it goes
09-17-13, 10:47 AM
#23
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Has anyone measured the gains from the PPE headers with cats vs without cats? Obvious it would be less, but how much less?
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
The header design FLOWS way better than the OEM manifolds..
Same goes for the exhaust systems...
Pipes designed & bent for proper flow will work better than perse the oem tubing that varies in size in several locations and also goes from 2-1-2 design. (with a crushed Y area as well)
~ Joe Z
09-17-13, 11:06 AM
#24
Has anyone measured the gains from the PPE headers with cats vs without cats? Obvious it would be less, but how much less?
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
https://www.clublexus.com/forums/clu...flow-cats.html
09-17-13, 12:11 PM
#26
09-17-13, 12:37 PM
#27
in stock set is sold.
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Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
09-17-13, 06:00 PM
#28
Oh, I know this. I wasn't saying the headers didn't increase HP too. My question was how much are the HP gains from the PPE headers diminished if someone runs cats instead of catless. If the headers are a proven +35whp on an otherwise stock ISF, are we looking at +30whp with headers and cats, or only say a +15hp gain?
If this is also true for cars running headers, that's impressive. These are the first high flow cats I've ever seen that apparently don't cause any drop in HP at all. Can that possibly be correct?
If this is also true for cars running headers, that's impressive. These are the first high flow cats I've ever seen that apparently don't cause any drop in HP at all. Can that possibly be correct?
https://www.clublexus.com/forums/is-...s-here-13.html
09-17-13, 06:55 PM
#29
Has anyone measured the gains from the PPE headers with cats vs without cats? Obvious it would be less, but how much less?
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
Like a few of you other guys, if I were to get headers, I'd run them with cats installed. I've been of the general impression that having cats installed take away much of the gains, and therefore it wouldn't really be worth the money, which is why I don't have headers.
I'm the Green curve, he's the Blue.
Both runs were done on the same day, back to back.
Aslo enclosing various pics of my fabricated exhaust system.
Lou
09-18-13, 08:02 PM
#30
Tech Info Resource
iTrader: (2)
I've seen plenty of exhausts with cats installed where there was no power loss. It's a matter of getting it all done right. Random used to brag about their zero power loss systems. It can be done.