tdoug

What will this sound like. I cant find a video online of a sedan with non reasonated cats and stock exhaust ls it much louder than stock? Rasp? I do alot of highway driving. How is the sound in the cabin? How terrible does it smell? Thanks

alfredo24pr

iTrader: (1)

If you are asking these many questions, then you already think it's a bad idea.

Rasp: obviously. It's a test pipe.
At least go resonated to minimize a bit a drone, loudness, and rasp. Whatever you choose, get a good brand.

I went resonated high flow cats and will never look back. That is my recommendation if you are planning on getting a catback in the future.
What future mods are you planning on the car?

tdoug

You just confirmed my gut feeling. I plan on going with berk or fi hfcs. In the future just some more bolt ons, no forced induction.

Rochester

iTrader: (9)

The non-resonated cats from BERK have a 200 cell count of catalyst material. Matched up with the OEM cat-back, it will be noticeably louder and sound really nice. Berk+OEM is a bonafide power and sound mod. However, if you match that with an aftermarket cat-back, say hello to rasp. Supposedly, that problem is mitigated with FI cats, which use a 300 cell count catalyst. And even more so with their resonated cats.

Take that with a grain of salt. It's all hearsay after years of lurking. But that's the reasoning used when I bought FI RHFC's this year, in prep for next year's cat-back.

RPG11

I dont have berks but have 2.5" test pipes on mine, with a muffler delete. The smell is not bad at all i like it actually smells like a 2 stroke outboard engine smoke but not nearly as strong. Everyone hears test pipes and immediately think of RASP but you only get rasp like the first 5 minutes after a cold start. BTW i got a trophy for best exhaust sound at autocross. I will change to a catback exhaust in the next month or so, but im holding back on it because i love the current sound.

grojas112

iTrader: (17)

Hey guys. I recently installed the Tanabe axleback on my G sedan

Sound is a little louder than stock
I am looking for something a little louder.

What add ons will get me that sound

RPG11

Try a y pipe and resonated/nonresonated test pipes. Or try high flow cats. BTW BB just posted a thread about people who ask their own questions on other people threads and sending them out of topic.

Sent from my LG-MS870 using IB AutoGroup

tdoug

I am leaning towards the berk. Any opinions on the stillen hfcs? This is for a daily driver and will be using the stock catback.

Anyone gut their stock cats? I know your ruining an expensive,part, just wondering how it came out as it appears cats are still there. I have done this on old v8s but the sound didnt change as the h and flowmasters drowned it out.

Rochester

iTrader: (9)

The O2 sensor connectors on the Berks are stubby, so you may or may not have issues with codes. FI uses a J-shaped extension that seems to work very well.

I did this for the pre-cats on my Maxima, and it was a nice little power/sound modification. However, I also had an O2 Simulator wired into the circuitry. And those were just pre-cats; the main cat was still in the mix. (Three cats on that car... very weird.)

I have yet to see discussion in this forum about O2 Sims. IDK why.

tdoug

I have in the past created a sim with resistors from radioshack on buick regal gs's. Worked well and no codes. Could also extend the o2 with foulers.

Rochester

iTrader: (9)

So...

• You're keeping the OEM cat-back.
• You're cool with whatever it takes to keep the O2 sensors in range.

If that were me, I'd get the Berk, too.

anthonychavez

horrible !!!! it will be raspy as hell

machomike8

iTrader: (1)

Yeah I was trying to decide between FI RHFCs and Berk HFCs for my sedan. I plan to keep the stock catback for sure. I was afraid that the Berks may be too raspy but that the RHFCs may be too quiet. I'm just looking to add a noticeable rumble. I've read every HFC thread. Sounds like the performance difference between the two is negligible. I ordered the RHFCs yesterday but now am rethinking that they wouldn't be enough. Anyone else have thoughts on the two setups?

JohnnyD

iTrader: (1)

I am also curious what it will sound like. No one has done this before?
Non-resonated test pipes with stock exhaust??

tdoug

I am tempted to buy a pair of tests to try seeing their are a few that are inexpensive. Anyome who has reasonated or nott with stock put up a clip.
Anyone have bumper staining with test pipes?
How worse does the car smell? I know the whole garage reaks like poison gas on start up now and that is stock!