Stillen Headers

FuszNissan

Yep...longtubes.

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Mods: Too Many to list!
LouFuszNissan
ZDAYZ 2012

Red370

wow, those oughta give the Z a little extra juice!

ssqpolo

+1 and one hell of a sound! when they're available...my berk test pipes are for sale!

blackbird

I got my Z in April and had the Stillen exhaust installed within weeks. This week I had the headers and HFC installed. The installer said he had to adjust the exhaust but not a big deal. I like Stillen stuff and would recommend the whole Headers, HFC, CBE trio. Course since I am picking it up tomorrow I may have a different tune BUT I really hope to be saying something like "death to EVOs" or bye bye German guy. The installer mentioned the alignment but the exhaust was installed with the original cats and Stillen, I would assume, designed their 3 parts to fit together 100% and the exhaust to fix with OEM also but maybe not the exact same. Josh, please send me the check we agreed on. (note to all, that was a joke).

Denny McLain

Not exactly sure what to think about the whole thing as I did Gen 3 intake, headers and exhaust having some issues with fit. (already had the high flow cats) Called Josh up at Stillen personally as the exhaust clearance was extremely tight and one side sat lower than the other. He said they were out testing a GT-R and someone would get back. No one did.

Last weekend I had Cobb in Plano Tx dyno/tune the car. IF......If the dyno's are the same, the car only picked up 16 hp from the intake, headers and exhaust over the stock arrangement with high flow cats. Even more disappointing was the car gained zero from the tune. This still has me extremely puzzled. The air/flow ration changed but the power output didn't. Even Cobb is mystified but we did have an issue of the intake temps ranging between 106-108 and the car perhaps didn't like the hot air. Dunno??

When the weather cools some here in Dallas I'm taking the car back to the original shop where I have the dyno baseline for retuning and better comparison. Also looking forward to the cam software but so far I'm not exactly jumping for joy with either the fit quality or the real world gains.

Hoping for a little luck, but I'm currently confused like a big dog.

Z eliminator

Today the stillen exhaust and berk cats were intalled. It bolted up perfectly except that the exhaust was too close to the cross member. It just cleared it. Not wanting to stress the welds on the exhaust we put a washer under the cross member by the exhaust set up on both sides of it. No clearence problems at all now.
The headers have been sent out to be coated and the installer sees the problem coming with the allignment. He will be modifing the cats in the next few weeks.
The car sounds much better , not that much louder that before, Has a nice sound to it.
As usuall the car ran terrible driving home (ecu has to learn, it idles a little lower) .
i punched it a few times and it broke the tires free. I will run it for a week and then get it dynoed. Base 266. g3 intake 285.6, cats the exhaust ( hoping for 315.) Time will tell. It feels a lot stronger.
There appears to be a whistling niose when i punch the throttle in nutreal as the revs come down. Everthing is tight. I think that its is coming from the intake ot behind the drivers seat.
Installion reveiw intake (need lots of work)
exhaust crossmember issue
changing the diff to 4.08's ( no problems )
cobb axcess port ( pulling out what ever hair i have left on my head )
headers === ( stay tuned )
The 350 with the stillen exhaust is louder than the 370 with stillen exhaust and berk cats.
12's in the 1/4 mile here we come.

Denny McLain

Spent the afternoon yesterday at a muffler shop whom I'm friends with. Even with the washer trick, you could hear the exhaust clunk at times. Thinking it was the slip fit/clamps doing it, had them weld all of them. Before that they heated the brackets, bending them so the exhaust sits a tad higher. The muffler shop also thought the exhaust was cheesy and I still need a few washers for it to clear.

The real cure is the Y-Pipe section needs to be cut, shortened and the exhaust moved forward slightly. The diameter of the Y-pipe being close to the brace is what is causing the issue. (not really...poor fit/design) This dawned on me on the way home and I'll probably take the car back and give it another try.

Very disappointed that Stillen has not taken ownership of the issue and offered solutions.

kannibul

Why doesn't stillen fix this?

Denny McLain

My feeling exactly.

After 4 rounds of close hand to hand fighting, I'm finally claiming a victory. No more clang, clang, rattle, rattle.

Went back to the muffler shop again today and I was wrong about cutting and moving the Y-pipe back a bit. After further close inspection, the exhaust was manufactured lop-sided and one side of the rear Y-pipe is lower than the other sitting about the same height as the large tube. Knew it was canted a bit when I first installed it, just didn't realize how lopsided it was and moving it forward wouldn't help.

Another fix solved the problem..... put my JIC Y-Pipe back on, cut the rear Y-pipe in half just after the flange, jacked it up higher and re-welded it back into the proper place where it should have been in the beginning.

The moral of the story is take your car to a good muffler shop and get it over with in round 1. I doubt you need to heat and bend the hangers, just cut the front of the Y-pipe in half, jack it up some more and have them weld it in place higher. Then weld the slip joints solid and throw away those tacky U bolts. Might be a nice and honest gesture to send Stillen the bill.

Why the JIC Y-pipe? I already had it, much higher quality and it has flex joints.

dainedazz

fi long tube headers ftw

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