Apexi GT Vs. Apexi N1

Post by **SrS13** » Tue Oct 21, 2003 4:51 pm

maybe this has been brought up before but I didnt find anythink this specific hope you guys will help.

I need an exhaust system and have narrowed down to either the Apexi N1 catback or the Apexi GT Spec. Ive seen that most shops here in southern Cali are backordered and the shops that do have it require it to be shipped. So with shipping included the Apexi GT spec will run me about 50 bucks more.

I know that bigger pipping isnt always better the GT is a 95mm diameter and the N1 is 80mm. I dont want anything that will attract a cops attention. i.e not noise. Which exhaust from your opinion will yield the best horse power gain?

thanks for the help in advance:help

Post by **EL240SX** » Tue Oct 21, 2003 4:51 pm

Hey SrS13 I got the Apexi Gt on my car. Well the exhaust is great and isn't to loud with the silencer on, which comes with the exhaust. The canister is pretty flashy but I would assume the same for the N1. I have had no scrapping problems on the canister but I also still have the stock suspension. When I did the swap I installed the exhaust so I really couldn't tell you how much low end I lost but the high end is great.

Post by **SrS13** » Tue Oct 21, 2003 4:51 pm

I have a 3inch downpipe how badly will my power band be effected if I add a 3.75 inch catback to it? Isnt the piping suppose to be the same throughout the system?

Post by **Phax** » Tue Oct 21, 2003 4:51 pm

Here's the straight up answer to your question. If you're going to be making enough boost to fully utilize a 3inch, turbo back exhaust (ie, down pipe + exhaust), YOU WILL ATTRACT THE ATTENTION OF THE COPS. The only reason for a huge exhaust like that is to spool the turbo quickly. A quickly spooling turbo requires full throttle. Full throttle, on the street, out of a 3 inch exhaust attracts attention.

With regards to exhaust size, ie 3inch DP in 3.75inch exhaust, you might lose a little bit of torque at low boost settings. If you're going to be pushing 1bar plus, then there's no need to worry.

Granted, they come with silencers. A silencer in an exhaust like that totally changes the driving dynamic of the car. It makes it a bit less boost happy. To me, it felt too much like stock. Just instead of levelling off at 4500 RPM, it got corked around 6000 RPM.

When you're not making boost, the car will rumble. I set off two car alarms in the parking garage today, in first gear, at about 2500 RPM.

I don't get many looks from the CHP, because in heavy traffic, just cruising, it's pretty subtle. At anything above 85mph though, I get dirty looks from cops heading the other direction on the freeway.

I have a Meagan Racing exhaust, with an 80mm tip. It's 3 inch, Mandrel bent, and showed up at the shop about 3 days after I ordered it from eBay. It also costs less than the more popular, imported from Japan versions.

Post by **RobDET** » Tue Oct 21, 2003 4:51 pm

I'de get the GTspec just cause i like the pipe to be shiny all the way up to the Cat. (That's why i got the Blitz whitch sounds incredible by the way)

Post by **SrS13** » Tue Oct 21, 2003 4:51 pm

Phax wrote:

I don't get many looks from the CHP, because in heavy traffic, just cruising, it's pretty subtle. At anything above 85mph though, I get dirty looks from cops heading the other direction on the freeway.

you sure they werent giving you bad looks bacause you were speeding? Ive never been on a highwa or freeway where speed limit is 85mph. So are you telling me that the Megan Racing is loud or the Apexi GT is loud?

Phax wrote:I have a Meagan Racing exhaust, with an 80mm tip. It's 3 inch, Mandrel bent, and showed up at the shop about 3 days after I ordered it from eBay. It also costs less than the more popular, imported from Japan versions.

what kind of hp increase did you get with the Megan muffler? Or does the muffler matter just as long as the catback piping is 3inch?

Post by **Redline240** » Tue Oct 21, 2003 4:51 pm

Just FYI, i have the N1 single on my S14 and she's riding on ebach sportlines and i have a scrapping problem...it knocks on the lsd a bit but that can be solved by shaving 1/8" off the side of the lsd...however the exhaust scrapes at the elbow where it goes under the axle...from pictures the GT spec has the same bend but with the increased pipe size its no doubt lower and would scrape more...so i'm glad i got the N1 since the piping is only mild steel and i can weld on a skid plate myself with a mig welder as apposed to getting it repaired at a shop with the proper welder for stainless steel....thats just my opinion, take from it what you will...

Redline

Post by **EL240SX** » Tue Oct 21, 2003 4:51 pm

Redline my Apexi Gt isn't scraping on the lsd at all, I wonder why yours is. Robdet I got a lot of complements on the shiny exhaust all the way to the cat and I love the look of it even if its only underneath the car.

Really SRS13 3" inch is all you need and its really a matter of what you want the most, but the main reason I ended getting the GT was Rob from Enjuku said that it is Stainless Steel all the way through and will never rust. I also plan on upgrading to a GT25R later down the line and felt that this exhaust would be a great match for that turbo.

Post by **Wuss** » Tue Oct 21, 2003 4:51 pm

theres no such thing as to large of an exhaust diameter on a turbo car. The larger you can get, the better.

Appropriate exhaust sizes only apply to NA applications, in turbo cars, the turbo eliminates any sort of back pressure, which kind of defeats the purpose of keeping the exaust a certian restrictive diameter. Bigger the better.

And if you don't want to attract cops, don't get either. I've heard them both, and they're both fairly loud ( without silencer ). And they both have the typical out-of-japan canister shiny look, so it will get you noticed.

Post by **S13240** » Tue Oct 21, 2003 4:51 pm

Wuss wrote:theres no such thing as to large of an exhaust diameter on a turbo car. The larger you can get, the better.

Appropriate exhaust sizes only apply to NA applications, in turbo cars, the turbo eliminates any sort of back pressure, which kind of defeats the purpose of keeping the exaust a certian restrictive diameter. Bigger the better.

And if you don't want to attract cops, don't get either. I've heard them both, and they're both fairly loud ( without silencer ). And they both have the typical out-of-japan canister shiny look, so it will get you noticed.

You're right about exhaust size restrictions for NA applications, but turbo cars are similar. Bigger isn't always better. It's like instead of using 2.5" ic pipings you're gonna go with 4" ic pipings? More air the better right? No I don't think so.

Post by **Movingviolation240** » Tue Oct 21, 2003 4:51 pm

but your talkin about IC pipe, not exhaust. You want the lowest backpressure possible, so biggest pipe. The less backpressure the greater press. differential accross the turbine. That means it spools quicker, makes more boost, and dose it all more effeciently. Not to meniton the lower backpressure helps keep detonation down a little.

Go big, trust me

Paul

Post by **SrS13** » Tue Oct 21, 2003 4:51 pm

but if I do go with the GT which is 3.75 inches in diameter would I need to get a bigger downpipe as well to keep the same size all the way through? right now I have a 3inch downpipe

Post by **Redline240** » Tue Oct 21, 2003 4:51 pm

SrS13 wrote:but if I do go with the GT which is 3.75 inches in diameter would I need to get a bigger downpipe as well to keep the same size all the way through? right now I have a 3inch downpipe

You'll be fine, i don't see the need in getting a new downpipe....not like your manifold uses 3in piping...

Redline

Post by **nissanrcer240** » Tue Oct 21, 2003 4:51 pm

how about the apexi dual , the 3" catback that splits into two 2.5" pipes, anyone have it for their sr20? im looking into that exhaust now and several others but i like the look of the dual, any experience with it anybody?

Post by **Wuss** » Tue Oct 21, 2003 4:51 pm

If you want everyone to stare at you, and cops to notice you, and if you want to set off alarms to every parking lot you go, the N1 Dual is for you.

Post by **nissanrcer240** » Tue Oct 21, 2003 4:51 pm

Wuss wrote:If you want everyone to stare at you, and cops to notice you, and if you want to set off alarms to every parking lot you go, the N1 Dual is for you.

in other words the N1 dual is NOT for me i guess.....have you had or have the exhaust or actualy heard it?

Post by **Wuss** » Tue Oct 21, 2003 4:51 pm

i bought my 240 with the N1 dual already installed. I took it off and sold it after 2 weeks of owning the car.

Post by **aznromeox** » Tue Oct 21, 2003 4:51 pm

BTW: does anyone have a soundclip of the Blitz Nur Spec R on a sr? Or have some pictures from the rear on a fastback.Thanks

Post by **EL240SX** » Tue Oct 21, 2003 4:51 pm

SrS13 I just wanted to tell you that the Apexi GT isn't 3.74" all the way through. It actually starts off with 3" and gradually gets bigger.

Post by **captain nismo** » Tue Oct 21, 2003 4:51 pm

aznromeox wrote:BTW: does anyone have a soundclip of the Blitz Nur Spec R on a sr? Or have some pictures from the rear on a fastback.Thanks

Check http://www.zilvia.net/ I believe they have clips of the Blitz running on a SR powered 240sx.

Post by **captain nismo** » Tue Oct 21, 2003 4:51 pm

EL240SX wrote:SrS13 I just wanted to tell you that the Apexi GT isn't 3.74" all the way through. It actually starts off with 3" and gradually gets bigger.

Yeah, its Apex'is "megaphone" piping. It starts at 75mm and gradually gets to 95mm.

Post by **Geza** » Tue Oct 21, 2003 4:51 pm

yea ive got the n1 dual on my 96 240 with a 3in downpipe and no cat and it sounds nice.not too loud and very smoothred top sr20det 15psi

Post by **Geza** » Tue Oct 21, 2003 4:51 pm

the n1 was veryloud on my ka but if youve got the sr or turbo ka then the exhaust is very nice

Post by **tomenugen** » Tue Oct 21, 2003 4:51 pm

does anyone know any sites or information on actual dyno stats? I wish this forum would have a thread on nothing but dyno stats.

Post by **Movingviolation240** » Tue Oct 21, 2003 4:51 pm

Not a lot of ppl have done dyno pull's with 'before and after' from just sticking an exhaust on.

But I do like the dyno page idea... I'll pass it allong.

Post by **RobDET** » Tue Oct 21, 2003 4:51 pm

I have a clip of MY Blitz exhaust. I'll email it to you as soon as i get the home computer back online!

Apexi GT Vs. Apexi N1

Apexi GT Vs. Apexi N1

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums