CEL and VSC came on after 300 miles.
Problem occurs at high RPM after 110 Miles per hour.
Lexus error codes from OBD:
PO420 P0430 Meaning
CATALYST EFFICIENCY BELOW THRESHOLD BANK1 AND BANK2
Talked with JUNTW but they don't accept any liability.
Went to a very good exhaust shop intrduced to me by LEXUS
They said that JUN cats are very poor quality and they use the extenders to rear O2 sensors on Y pipe to lie to ECU.
Had to change the cats with high flow HJS Germany 200CPI 150 HP each and rear O2 sensors bolted directly to Y pipe.
That added another 900$ in the budget.
They gave me a 90 days money back guarranty if CEL comes on again.
As it seems our car can't tolerate cats made in China.
If you go for a full exhaust from JUN think twice before you get the cats along.

 

Cheap electronics and relatively cheap food... everything else is just very exp!

but while the worl is facing high unemployment rates, I'm pleased to say Singapore's employment rate is at 115%

95% singaporeans, 20% foreign workers! kekeke

 

would the kit work on an AWD 250?

 

WEll this is australia
Base IS250 (poor mans pack) 54K ish driveaway to Sports lux 80K driveaway
ISF is 134K drive away

And YES finally we are getting the IS350
3rd country after Japan and USA!!!!
EStimated around 100-110K ish

and M3 cost around 170K around here

 

No it won't fit.
Sorry

 

no more problem after installed the new cats?

 

2000 miles so far and CEL never came back.
All is good.
It was the quality of the cats.
JUNTW Cats 100 CPI
The German ones 200 CPI

 

Dayyum, those are some nice gains, but 5K is waaay too much!!