Do they sell this? Would be awesome if they did at a reasonable price

Maybe I missed this, you are saying 320 SAE, STD or uncorrected? Gen3's, y, and y-back right? And that video just showed it making 326 with a stillen cat back and gen3's. ******** flag. My friend with PPE long tubes, FI cat back, pulley, Z1 manifold, did 335ish uncorrected on a dyno I have done power pulls on and is spot on with PSi's dyno where I got my tune at. I hit 320 uncorrected, 317 STD, 313SAE with Gen3's, Z1tests, Tomie Y, Tomie Y-back.

numbers SAE numbers power numbers something numbers

The kit is for sale directly from SOHO Motorsports.

Japanjay,

when I dynoed my car it made 320 STD. Stock intakes (advance drop ins lol), stock cats,and stock tune. As you know, every dyno will read different. thats why I’m going to get a baseline and then exhaust run right after. I dont think this dyno is reading high. two guys i know put more power down on the dyno at z ants. Also, dans single turbo 370z came to that dyno day and put down exact numbers with motion lab tuning in charlotte.

right now were just comparing apples to apples. the only way to solve this is to do a baseline and then bolt up the exhaust and do it again. i will post it all on video for you guys to see as usual.

That middle one is not normal. The other three are and yours are not normal numbers. This platform has been around for 5 years and no one has been able to create "41whp" from just an exhaust, no tune or nothing else. Tomie's is identical, doesn't do that not even close, so I do believe you are the only one thinking that this is even possible without having a severely inflated dyno. But everyone will see when you baseline, with the exhaust put back to stock. Non-nismo will be around 273-77ish consistently state to state dyno to dyno for the last 6 years.

While I agree some numbers may seem inflated, I do think we will get to the bottom of this. Gregor seems to be doing a honest job on his end to provide us with information. Either way I did want to point out that Soho and Tomei are not the same. Sohos y pipe is 3 inch whereas tomie is only 2.5. I am not saying their is a major difference there but I do remember reading a 3 inch y pipe being recommend on the tomie thread.

I feel the need to correct you:

The Tomei Y pipe is 76.3mm, which is right around 3". Tomei Specs

I use the Motordyne Y Pipe.

I am going to have to check the Tomie thead. Could of swore they said it was 2.5. For now I stand corrected

Do you mind taking a picture from behind your car so I can see how low this exhaust hangs?

Attachment 100620


Sent from my phone

I think he meant from low...lol you can't see how low the exhaust hangs in that pic

That's all i have.

If you're going for that slammed look, it's going to scrape. i'm not very low and the rear scrapes on speed bumps sometimes.

I meant of the SoHo exhaust. I live in New Orleans, their is no way I can run the Tomei. I am hoping the Soho a little higher.

Exhaust sounds badass and the gains are incredible. Add a dummy muffler to fill the space lol.

where In the **** did I post a 41 whp gain? I never said that, I just posted numbers. THESE ARE STD NUMBERS ON A DYNOJET. They're normal. Is it higher than some other dynos? Sure why not. None of that mattes. I know who put this exhaust together. That's why I payed good money for it. It was built and designed by power junkies who get payed 6 figure salaries to build them on race cars so if it makes more than usual, I won't be surprised. Not for looks or its "shinyness". I'm not even trying to praise anyone. Im giving Yall the facts to try and help Out other 370z owners by bringing something different. I'm not here for soho Motorsports or anyone else. I represent myself and my car. I was the first one to get this exhaust so that's why I shared it on here. All of you need to be patient and just stick around. The dyno numbers will do the talking. High, low, or normal doesn't matter to me. I just want to know the Gains. I would rather not go back and fourth about it. You cannot compare dynos. It's apples to oranges.

Also, the 370z has a 18% power loss through the drivetrain if what you're saying is true. It shouldn't be that under. A 350z HR with intake and exhaust made 276 on this dyno. It's not that inflated. I've been around this dyno for 4 years now and have attended three dyno days. Go look at the videos. My brothers mustang was spot on with Paxton's dyno. Todd from Alabama brought his G and put down the exact numbers he put down at forged performance. This dyno reads a little below what used to be CINs mustang dyno. It reads higher than 42 auto sports dyno dynamics by about 15-20 percent which is normal. It reads lower than Z1's dyno. I don't know why yall like to assume I'm bullshitting. It's not going to benefit me or anyone else. There are hundreds of factors at play here as well. Different cars, temps, humidity, mods, and all kinds of **** haha. Just give me some time to get you guys a baseline so we can see the gains.

Just wait for the numbers and gains. That's all I ask lol. This should be a thread of Horsepower, torque, and other info. Not a dyno war

Thank you sir. As soon as I ditched the stock exhaust the car felt much better! As for the empty cut out... Meh lol as long as it sounds mean and makes good pow pow for an exhaust!

Yessir, they sure do. I have 1200 in mine. But you can buy just the y back section for 700. Give soho a call and tell them Phillip sent you. He will take care of you

Depends what you consider normal. If he made 320 with those mods in STD in 5th gear then SAE in 4th's only 301hp. With a CBE and drop in's like he said it's still high but possibly possible. My stock tune with CAI, and CBE was 280 in 4th SAE. Why the 21hp more? Idk.

Very true sir! Dyno most likely reads higher than the one you were on. what kind of mods were you running? Depending on your conditions at that time and day it could've been 300 std. Doesn't std basically correct the weather to the best temp and humidty. From what I rmemebr SAE takes the current weather and humidity into consideration where std is what you'll make in prime weather conditions for MAX POWER. Lol

Also I hope this exhaust does make great power. I'll give you guys a base line here soon

Next time you go outside can I get a picture of the exhaust hanging. I may buy this soon

No problem. Ill look through my pictures now and if I don't have one I'll post one tomorrow

Thank you. I put in a email to them but I know calling works more efficiently. I just delaying, the wife saw gurus dyno video with test pipes/y pipe/soho and she said no.

link to dealer?

Google soho motorsports

like said i had half a CAI, CBE and RPF1's on the stock tune. after LTH's i went up to 293hp. why with the cats removed you're still 8 more hp idk.

no SAE and STD are the same they just target different temps and humidity. STD is a lower temp which if a car was running in a lower temp it'd produce more HP from the cooler more dense air unless youre actually blowing hot air at the DJ sensors. if you do this you screw the sensor up so much the car will show a ton of power because youre still moving the drum fast but the sensors reading like 100+ degrees.

what i dont get is all DJ are calculated the same unless youre on a DJ thats both an inertia and load cell (DJ does make these hybrids). so with the calculation set to either STD or SAE whether in Dever in winter or Miami in summer the same car should put down the same numbers no matter what. the hybrids are like a mustang and whatever you input you get change the output unlike a normal inertia DJ.

Oh okay gotcha, thanks for schooling me on that! Haha it was too late to do research. We will find out once I put my car on. I've gotta guy on here bringing his stock 370 to see what he puts down as well! Hat makes sense though. It was very good temp that day as well. I think humidity was only around 30% and it was 50 degrees. We kept oil temps at 175. Saw good power there. Been thinking about a oil cooler as the next mod.

Lol his **** is beyond loud from what I could tell!!! I have yet to hear it in person though. I'm getting ready to drop a resonator in mine to quite it down just a hair.

Do resonators reduce HP?

I wouldn't think so. It's a straight through piece with packing. It's not going to restrict any flow but just eliminate any sort of rasp through the power band. Soho can include one in the exhaust as well I think. It comes without it but for the cost of the resonator he would probably just fabricate it in with the catback. I'm looking at either the normal tube resonator, or the ultra quite resonator from vibrant.

The dyno that we use is not a hybrid dynojet, it is an inertia dyno. You are correct in regards to the STD & SAE number explanation and we look at the dyno as a tool to see a percentage increase from the platform at its stock level. Numbers can vary according to a lot of variations. Once we get a stock 370Z on the dyno, we can then determine the percentage increase that has been made in power and torque overall.

All the why's and how's................ Could it just be the best exhaust @ getting HP over all the others that were claimed to be the best at considerably higher prices? Just saying..............
I would assume the dual setup sounds the same, correct? Very interested in this, this sound is flipping AWESOME!!!

Thanks for chiming in soho. Didn't know what kind of dynojet it was!

Lol that could very well be the case! I hope it is. The dual setup probably won't be as aggressive as the single IMO. Also, they haven't made their dual for this car yet so it's hard to tell haha and thank you, i agree on the sound part :driving:

Going to the dyno tomorrow to get a baseline on that dyno... Also for the guy that wanted a picture of the exhaust here is one from the rear. I had the stock muffler and mid pipe in the hatch at this time so I think it is a tad bit lower. I'm also lowered on eibach profit springs. Had the exhaust in for about 6000 miles and haven't scraped yet.
http://i1083.photobucket.com/albums/...psazevnsxf.jpg

Damn, that's do able in NoLa man. I dig it.

Yea man. For it to be a three inch I've been impressed. I've hit some massiv dips and humps around campus where the construction is and no issues. best of luck!

P.S you won't regret the sound :happydance::tup::driving:

ok call me crazy but hear me out...i've always seen people say 3" flows more than even dual 2.5" pipes (odd to me cause you'd think 2.5x2=5" which is more than 3") well 20 years later i decided to test that. i punched in 2.5" pipe at a velocity of idk 5 feet per second (sounds right maybe) and out comes whatever value you want to view. lets go with cubic/inch per second; i get 294.5. well times 2 and we get 588 cubic/inch per second.

now 3" pipe is only 424.1. so if im not wrong what people have always said is wrong. the NA Z not having a lot of power really maybe all these 2.5" dual CBE's are hurting us cause the openess is to great and the scavaging sucks. maybe this CBE does add good power because the smaller flow rate is keeping the scavaging up better.

am i crazy?

Wonder if it would be possible to just order the axle back section of the exhaust since im installing a BP Performance kit 1.5 ??

I don't know a thing about what you're talking about but by your explanation it seems possible. I'd like to learn more about the science behind all of it.
I am pretty sure if you contact soho or Sasha they can work something out.

Either way I'm so appreciative of this thread. I've been so stuck on duel for so long, this single..I've been needing it. I Found THIS Hot *** Picture http://tapatalk.imageshack.com/v2/15...a1e1aa1875.jpg