The J-bends hanging off my test pipes are hollow.

How long have you had them on the car?

They were put in the same time the TT was, so it's been about 6 months.

I put mine on yesterday, but forgot to get the steel wool. If it comes on like it probly will ill do it then.

lol nice. well my high flows have been on about 300 miles+ and i have no cel or a sputter like most are getting

I got test pipes, honestly im hoping I get used to the rasp between 2-3k if not ill probly get a turboxs catback sooner then later. Outside it sounds ****in sex tho.

i would not recommend the truboxs with test pipes

really? hmmm thx for the heads up. Cel came on btw, will be puttin brillo in this weekend probly

I have an 08G35 Stuffed with brillo it came on after 500+ even with non foulers

Your rasp ain't goin away no matter what. U gonna havta get use to it. I kinda got use to it. My exhaust does cover up some of the sound.. But it's always there.. It sux. N sux the brillo didn't work.. Any ideas what we can do now??

I didnt do the brillo yet. Kram said it worked, i just been lazy and havent gotten around to it yet. After a week of driving the rasp has actually mellowed out quite a bit in normal driving. Its barely there between 2-2500 but when i stomp on it, its there.

but how did you stuff. it i tried and tested it till i got the right combo and the light did not come on.

i am working on something to try to fix the cell issue, i just gotta figure out a way to make it work.

I used very fine steel wool from Home Depot. I stuffed it PACKED! Barely enough to blow through the hole and had to use clamps to put in sensor.

:(

I have one more fix that was sent by a member on here and I will keep you updated if it works it.

and wat method was that

clamps ?? i don't understand. what kind of testpipes or high flow cats are you using?

GTM is selling the test pipes with the j-bends now:

https://my350z.com/forum/product-ann...est-pipes.html

look good but has anyone tried them to prove if they work or not. ill stick with what im using and what im trying to make.

I have the GTM prototypes on my car and all's good. I'm sure others would still curious to see if your solution is more cost efficient though.

yeah its gonna be very cheap to those who already have test pipes and high flow cats. i need to get some time off work to go shopping so i can see if they even have the sizes im looking for. once i know it works ill let everyone know.