MiiK350

iTrader: (8)

yup.
https://www.clublexus.com/forums/is-...o-bs-here.html

jadeboy

iTrader: (1)

Well.. I probably have the most CEL problems (3 O2 Sensors has been replaced - had to install the High Flow Cat to fix) with the PPE Header than anyone else in the forum.

I believe it could be because of the cold/wet weather here that might be the cause of the problems.

If there was no CEL.. the PPE Header is worth every penny... the sound (without the CAT)/Power is awesome.

Jordo487

I am looking to put these headers on, but want to be prepared for any problems I run into prior to doing this. What high flow cat did you have to put on to resolve the O2 Sensor issue? Or just any will pretty much do?

v8soarer91

any extractor/header that flows more/better than stock is always beneficial to any car

furryjet

iTrader: (2)

Does the cats really make that much of difference? I have the PPE headers + invidia midpipe + f-sport exhaust combo and it's so damn loud..probably one of the loudest exhaust combo you can get on an IS..so I kinda want to quiet it down a bit but I don't want to give up any section of my exhaust!!

Kybball#1

iTrader: (20)

I had the invidia + F Sport set up for about 5 days, hated it , WAY too loud. I am wondering how much more loud my car with be with these and my Joe Z race set up.

DOUGLis350

Curious too...

Kybball#1

iTrader: (20)

Doug, I say we just do it.....

DOUGLis350

The only thing holding me back is Sikky headers coming out....

Jordo609

I just emailed them and they gave me the following: (I rather install PPE now and enjoy the car, then wait 3 years or whatever there, "nothing close to completion is" down the road.)

"Hey XXXX,

We do not currently have any headers for the IS 350 available. We have some in development stages, but nothing close to completion. Thanks for your interest in Sikky products.

-Justin
Sikky MFG"

Kybball#1

iTrader: (20)

There you go, lets do it doug.....

QMDJ

Question: so if you dont get the high-flow cat, you need the o2 sensor? and the o2 sensor has to be welded on?

Its just cuz i dont like the notion of having something permanent just in case i want to ever go back to stock.

jtsst

i've been thinking about getting ppe headers for a long time, but I've always thought it would get too loud. I already have the invidia midpipes and tanabe exhaust

Kybball#1

iTrader: (20)

I sure wish someone had the Joe Z race/PPE set up so i could hear and hurry and order these things :-

laobo979

iTrader: (5)

This set up been done already. It either you want it or not. Scroll down there 3 different videos.
https://www.clublexus.com/forums/per...catless-2.html