2005 Sentra SpecV with Stromung Exhaust (Cold Start)

[undergroundelement]

I was thinking about ceramic coating it and heat wrapping it. I did some small simple interior/exterior mods. I had some intake parts from other vehicles so I made a full cold air intake. Next step is DBA slotted rotors and Carbotech pads. And hopefully front sway bar before my next autocross event in November....what upgrades have you done?

[mistertrip]

@undergroundelement I like the ceramic coating, though I don't think I'd heat wrap it. Once it's coated, not sure how much you'll gain from wrapping, but I could be wrong. I've done intake, header, exhaust and flywheel so far. I was considering lower struts before sway, partly because it would reduce on vibration in the car. Also trying to get a short shifter but having a hard time tracking the guy that makes the best ones down.

[undergroundelement]

Stromung exhaust system is on its way, in the mean time I need to find a header. Looking at the Factory Service Manual and underneath the car I noticed that the bottom cat is welded to the piping. Are you using that pipe or did you cut/weld into it with an aftermarket header setup? Some of the headers I was looking at are 4-2-1 like the DC sports, which will eliminate the cat and I don't wanna do that either, so if you don't mind telling me the rest of your setup that be great!

[mistertrip]

@undergroundelement I did an SRS 4-1 header into the midpipe that's there, keeping the cat in place, and then a Stromung Catback w/ resonator. I left the midpipe with cat in place because, looking at charts and talking to the folks at Stromung, I didn't see a reason to replace it with the 4-2-1 or a hi-flow cat. the gain is just a small spike in the graph which doesn't make sense for the added noise and pollution on an NA car. Might be worth it if you're gonna turbo/supercharge.

[undergroundelement]

I finally got around to assembling the same setup you have. It sounds great! I only had one major problem. The SRS header did not fit the studs on the block. Did you have any issues with yours? The seller offered to exchange or reimburse me to have it modified fit. I wasn't about to waste my time putting the OEM back in and off again.

[mistertrip]

@undergroundelement Really? I haven't had a problem with mine. In fact, I took it off and had it ceramic coated and put it back on and it went on the block just fine. It's a tight squeeze to get it in for sure, but once its down there, no problem. Sometimes it happens with machined parts. You make 100 of them, 1 or 2 are bound to be messed up. What else you done/doing with the car?

[undergroundelement]

@mistertrip I took it to a friend who's an engineer and has a machine shop. One look at the OEM exhaust manifold and he knew exactly why the SRS didn't fit. To make a long story short the OEM was actually modified at the factory to fit the OEM studs. The holes on the OEM header aren't round but oval.

[undergroundelement]

Respond to this video... This means they were milled which is what needed to be done on the SRS to fit. Also one of the holes on the SRS is too close to one of the pipes, which made the nut not flush and secure. The nut had to be shaved down and a small notch into the pipe was made for a flush fit. Anyway, let me know how yours went. Thanks!

[undergroundelement]

Sorry I couldn't my whole story into one box.

[undergroundelement]

I've had my eyes & ears on a Stromung. Sounds deep and solid, not like a raspy Megan which I almost bought. Wise choice my friend! Do you have a full exhaust system or did you leave the stock headers in? Also is the Stromung piping the same diameter as OEM? Their website didn't specify. Thanks!

[mistertrip]

@undergroundelement It sounds really nice. The video doesn't do it justice. I have an aftermarket header. If you've got a sentra, even if you don't like to mod, it's highly recommended you get rid of the stock header. It's garbage and I know a few people who have ruined motors with the shit precat they put in there breaking apart.

[undergroundelement]

@mistertrip

Appreciate the 411! Funny you mentioned the stock headers, I was on Wikipedia the other day looking up some specs on my 2002 Sentra SE-R SPEC V and someone recently added the exhaust-manifold issue that you speak of. So with that being said, I'll definitely add after market headers along with the Stromung system. Did you put a catalytic converter back on the piping? And did you have to relocate the O2 sensor or is their a port on the aftermarket headers for it?

[mistertrip]

@undergroundelement The Stromung is a catback. I didn't want to go catless. All the charts I'd seen for NA cars that went catless showed a spike in HP so it technically reports as more, but it's just a spike and you actually gain less power over the course. The aftermarket headers do have O2 bungs in them. They have 2 because different years had them in different locations.

[mistertrip]

@undergroundelement Stromung pipes are not stock diameter. They have two exhausts, a 2.5" and a 3". The 3" is really for turbo'd cars. If you're NA, you're better off getting the 2.5". Also, this one has the resonator on it. I'm a big fan of that since it's my daily driver and I live in a quieter neighborhood. Also keeps it less ricey sounding. Only downside is that adds a little to your weight.