Low budget exhaust!!

Jordo!

Oh, there's a few...

1. The aptly nick-named "demon bolts", as another member noted.

2. Unforgiving rasp and rattle on decel (if unresonated TP's are used).

3. The potential for a CEL if the ECU detects too much similarity in voltage changes between primary and secondary O2's.

4. Passing emissions, if that's a thing in your state; (NB: #3 and #4 are both possible problems even with HFC's, and resonated HFC's are advised as well...)

5. Possible fuel odors (probably more for those running TP's untuned...)

6. A tune is not "required" but is highly advisable. Pulling the cats makes for significant differences in flow and also means less heat at the head, so you can dial in more timing -- the OEM cats are arguably the greatest bottleneck on the car, and swapping the cats out for either HFC's or TP's is a high bang-for-the-buck mod in terms of power gain.

Nothing insurmountable, but not quite as easy as just swapping out the cat back and calling it a day.

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Bigd4mcc

Yeah I was doing a little research on all the issues with hfc and test pipes resonated and non resonated. I wanted to do my own set up with 2.5 inch all the way back with x pipe and about 18 inch resonators in the midpipe area with top speed axle back exhaust. I'm thinking about testing that out to see how it sounds, and then I'm going with the obvious tune, uprev

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2010 base with sport package. Hps hoses with k&n drop ins, custom axle back exhaust. 1/4 mile 13.7

luigi90210

Don't worry about the smell or rasp, its not nearly as bad as people make it out to be. With my set up I couldn't even hear the rasp/hiss the test pipes make, before the axle back I could but the car was a lot quieter with the stock Nismo muffler. As long as your exhaust is fully resonated(would have 4 resonators if you go with your setup) you won't get any rasp. And I couldn't smell the gas unless I was at a red light and had the windows down. People behind me on the other hand now that's a different story. I've had my friends complain about the smell when they would follow me places.

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SOLD 370z
New Car:classified
DD:2011 Mini Cooper S stock

Masterbeatty

I heard home improvement stores sell washers on the cheap.

just put like 5 or so between the flange to the muffler.

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2011 MB 6MT
Masterbeatty journal

wanker

Beluga, CNT and Garageline all make decent budget exhausts for the 370z, and you can find videos of each on YouTube.

YzGyz

Here is a picture of what it tools I used to get the cats off. That short bolt is a snapped bolt.



YzGyz

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YzGyz

Trips

I would like us to move forward and just help the Op with his question instead of lecturing him.

At this point he is doing nothing wrong with just finding a low cost solution that is NOT endangering him or anyone else.

Op,

There are some options on here as some have pointed out.

I would just make sure they hold up in time and not turn to crap after a long period of usage.

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luigi90210

When I had my Z I had the stock Nismo exhaust with tanabe replica axle back(made by top speed) and top speed test pipes. Got nothing but compliments on my exhaust from random people on the street.

__________________
SOLD 370z
New Car:classified
DD:2011 Mini Cooper S stock

jchammond

https://vimeo.com/129999295 I like mine quiet (stock)


Sent from my iPhone using Tapatalk

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Bigd4mcc

Any thoughts on obx test pipes, they look crazy but haven't seen anyone with them? Anyone know anything about these?

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2010 base with sport package. Hps hoses with k&n drop ins, custom axle back exhaust. 1/4 mile 13.7

Magic Bus

Was 90% set on ordering an FI system, but thought I'd check a local performance shop for options. The owner of the shop I visited told me, he'd install any cat back system I could order for $125.

He also had a couple of full system, can't remember the names for about $1,250 installed. Then asked me if there were any other mods I was planning or entering a car show, I replied no.

He then proceeded to tell me that the biggest clog in the exhaust system in the Z after the cats is the stock muffler. Then offered me to remove the stock exhaust, install 2 glass packs, straight inline with the existing pipes to the tips. I also wanted to keep the stock tips which he did. The price he quoted me was $400 total.

I figured, it was worth the risk. If I didn't like it I wasted $400 but I could still order the FI. I have got to say, almost 3 years after installing, I am so happy that I made that decision. Saved me $1,500, sounds great, no drone, butt dyno immediately told me increased performance, almost 2 miles more per gallon and it looks great.

As some has mentioned, it maybe worth checking out some custom options that are much less expensive.

jrb55gh

Sounds very interesting. How much louder is your exhaust than stock? What parts of the stock exhaust system were left in place? Cats, Y pipe, mid pipe?

luigi90210

I hate to be this guy but you could have done the same thing but half the cost going with the topspeed axle back(can be found on ebay for around 260, 230 if you get the G37 version which is the same thing) for a little more then half the cost, the only issue you would run into is the tips sticking far out if you have a regular 370z, since they were designed for the nismo bumper they stick out farther

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SOLD 370z
New Car:classified
DD:2011 Mini Cooper S stock

Jordo!

So basically like the "short tails" option but with resonators?

Probably sounds pretty good -- nice!

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Magic Bus

jrb55, It's just like Jordo mentioned, like short tails but toned down a bit. The sound is unmistakably VQ37 but maybe 50% louder at idle and quite a bit louder when opened up. The tone is just a little lower and I really like the sound.

Cats, y & mid pipe all stock in there. They cut the pipes approximately 2 feet prior to the glass packs, welded slightly larger pipes that enter the glass packs.