Does anyone here have test pipes on their max ?

 

I don't have any on mine or HFC's since that'll usually trigger a CEL. Your exhaust fumes will smell like pure gasoline if you run test pipes. One reason I never drive behind my friend's Nismo 370Z

 

I know this is a dumb question but i really don't know, what do test pipes do?

 

Test pipes remove the factory cats. Instead of the cat getting in the way of exhaust flow, test pipes are just straight tubes (some are resonated to get rid of drone) that delete your factory catalytic converters.

P.S. test pipes are illegal in all 50 states, so if you have strict emission standards in your state, you're taking a walk on the wild side

 

My friend has it on his G35 it sounds so sick thats why i was considering getting it
it also adds hp!

 

They do sound nice, but to see true power gains, really need a tune to dial everything in.

 

Nothing a little bit of aluminum heat shield welded to the test pipe won't fix.

Actually for as high-compression as the Nissan motors are, with a full catback, a testpipe should see pretty good gains, even untuned.

I know I drive a 5.5, so I can't say much for the 7th gen, but I know I picked up a bunch of midrange torque when I swapped out my cat for a test pipe.

I'm currently running untuned, and the car does smell like a gas station.

Of course, it's pretty cool when I rev it up, and I'm shooting 12" flames out of my muffler.

 

Any advantages over the "Y" Pipe??

 

Easy there Fast and Furious

 

Oh wow, I wanna keep my cat especially since I dont feel like cuting and welding, as good as my car would sound.

 

The testpipe is separate from the y-pipe. At least on the 5.5. It goes like this:

Exhaust manifolds --> y-pipe --> Catalytic converter --> catback exhaust system.

Basically, the 13" (for the 5.5 gen) catlytic converter gets removed and replaced with a 13" piece of straight-through resonated exhaust piping.

I'm still currently running a stock y-pipe with gutted precats because I haven't had time to put my headers on my 6MT (they're currently sitting on my old 4AT...).

Now, a test pipe and headers will net you some really good gains. Of course, I don't think anyone makes headers for the 7th gen yet, do they? Or perhaps a y-pipe that deletes the precats?



It's just comical. That's all. I wasn't expecting it to happen...we were just fooling around with my car.

 

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Have a sound clip of your setup? Ive been debating whether to go test pipe, hfc, or welding a resonator in like sparks did...Dont want rasp at all. Mind you Im getting OBX V2's very soon so that eq y should change the note a bit.

 

Hahahaha I sure hope you weren't going for the F&F look

I think on our 7th Gens its headers into a cat for each header, Y-pipe, another cat, resonator, y-pipe split into two mufflers. I could be wrong on there being 3 cats upwind of the resonator...

Racingline does build a Y-pipe, but with how **** the emissions tests are around here (trust me, my dad is a DEQ Emissions Control Manager in VA), I'd rather not have to worry about it.

Glad to hear the test pipes do give the 3.5 some extra oomph. I think I'll just stick with the Borla CBE and call it a day

 

I really hope somebody releases a set of headers to complete the y-pipe and cat back soon.I dont care if it has high flow cats or not! I think a reflash and some headers to complete the breatheing of this max will def put some fun in this car.

Far as cats go I always have went to the bone yard and took the heat sheild off old cars cats and welded onto my exhaust to have the appearance of cats on the car.The cops usually just walk around with a mirro on a stick to take a quick peak under the car for cats present.

 

I've got a few...

Headers + eBay exhaust with Magnaflow muffler:



Headers + Testpipe + Same Exhaust:



Current setup:





Gutted pre-cats, test pipe, 18" resonator, sidepipe. The axleback will be back on the car soon.

Hell no I wasn't.

It sounds like the 7th gens are set up exactly like the 5th and 6th. One precat off of each of the exhaust manifolds, a secondary cat off of the y-pipe, and then the catback exhaust.

The 5th gens see most gains from installing headers not so much from the straight piping, but moreso the elimnation of the precats. Same goes with the test pipe replacing the secondary cat.

Emissions around here aren't super-strict, so that's how I sneak by with my headers. But I'm also good friends with a guy who runs a smog shop that guarantees he'll get your car through emissions.

You didn't hear that from me, though.

 

Fixed.

 

+1, A 6mt plus a driver that knows his way around a manual gearbox = pwnage.

 

Thats a good sounding test pipe setup. The Magnaflows have a big hand in its note. I might try to swap my sp1 for a Magnaflow setup but a32 bumpers are designed for single tip mufflers.....

 

I figured they were probably set up about the same since the 3.5 was put into the Max years ago. A new set of tuned headers would be great, especially if they could use the stock cats (sorry, not trying to be a tree-hugger ).

Lucky for you the emissions regs aren't as strict as they are in my county. I know a few guys who have to ask a guy, who knows a guy, who asks his brother in law to pass cars that otherwise should fail