Can you get to 400 without turbo or super-charger

welderz

I haven't been on the g37 forums so I personally don't know but I don't trust that 90 horsepower gain. They were most likely taken on different days considering that headers were installed. That brings up a ton of variables between the 2 dyno runs.

KingDavid

Oh my god...I just posted this link a few pages up. They make ~350whp with I/H/E and a tuned reflash...

Final Dyno Numbers - MY350Z.COM Forums

KingDavid

Son...On a mustang dyno, Final Dyno Numbers - MY350Z.COM Forums

~350whp...On a mustang dyno with I/H/E and a reflash...VQ37VHR. From ~260whp bone stock to ~350whp with room to make a more aggressive map. That's ~90whp from 3 mods. Hard to believe but the proof is there.

How many times do I have to post that link? Is something wrong with the dyno? Are the numbers off?

KingDavid

You mean the one dyno with just the intake and the other one with I/H/E?

Not insulting your intelligence or anything but don't be ignorant about what you see. Be proactive and ask questions. Join that site and ask the user whatever you need to know.

On a side note, that tune was backed off as well. The tuner didn't want to push it so there's room for more.

JoeyD

Your posts are about as abrasive as they are wrong. Thanks dude, I can tell the difference between reality and video games. People like you are what is wrong with the forums, you come on here and play the Internet tough guy, but I guarantee you you won't talk like that to me, or anyone else, when we are standing right in front of you. I doubt if you have read any of the findings from G37s (which is a much better comparison than the 350Z) but they support my estimations fairly closely.

Apparently you can't tell the difference from one engine to another. If you knew anything about cars you would also know that hotter spark (ignition) will yield power even without any supporting mods. It results in a better more efficient burn. Pulleys may be a small gain, but that's how you make power slowly through an intelligent selection of upgrades. Injectors are for good measure, the other mods will result in a leaned AF ratio; better injectors provide a margin of safety rather than your assumption of it. Anyway, I said 400 Crank HP in both posts. 400 Crank with a 22% drive-train loss is right in the 330-340 RWHP neighborhood. So, it would appear to me you have no idea how Crank and RW horsepower interrelate. Maybe you should read more and post less.

__________________
When was the last time you did 230MPH in something with 4 seats?

welderz

What I mean is there are a lot of variables between the the two dynos on different days. Such as ambient air temperature and humidity whether or not the car had multiple dyno runs and was heatsoaked and the correction factor on the dyno may have been different between the two days. I still say 90 horsepower is a bogus number for those mods. Here are more realistic numbers MYG37.com Member Dyno Sheets - MyG37 a lot of them are stock dynos except for post 13 and 16. They don't show anywhere near 90 horsepower gains and they have similair although not the same mods. I think those numbers are pretty low but tuning is still somewhat of an unknown on this engine. I bet in a few months when more is known about tuning these engines they will be able to make more horsepower with those same mods. It seems like everybody who posted in his threads on my350z and myg37 believed it but I'm very skeptical of whether or not they're accurate. I hope he really did get 90 horsepower but it seems unbelievable.

RCZ

Alright, so I really don't want to add to the drama, but MightyBobo is right. Those 3 things (injectors, ignition and pulleys) may get you 3hp. And that's just because the ignition can more effectively start the combustion process and the pulleys free up some mass that is stealing hp. The injectors are pointless. That is complete video game theory (Forza? NFS?) when you are talking about modern day cars...

90WHP out of an N/A 3.7L like the one on the 370Z is impossible on an exhaust, intake and tune. You are not going to point me to one stupid thread because I will point you to 6,000 other ones that say your numbers are bs.
If the motor is turbo, like an EVO or STI, then yeah you can do that, but not without compromising reliability.

Congrats, I'm not even going to go in that thread because its probably a bunch of idiots congratulating him for the super amazing gains. You know dynos can be tweaked to read whatever the hell you want them to read right? Do you believe everything you see on TV too? You own a snuggie dont you?

Find me some more threads that claim 90RWHP gains with a stage 2 car. Please. Really, I want to believe it!

Tune was backed off, wait...so this is a conservative tune that made 90WHP? Oh dear.

Listen guys, you are arguing over something that has no real basis. As much as I would love this to be true..it does not make sense. The parts that were chosen aren't even full-race no-compromise parts and the tune is "backed off." Clearly by reading your rationalization of the mods, I can tell you have the theory down JoeyD, but you need to be a little more skeptic about the results that people post up on the internet.

This is the same subject over and over and over again... I would be very very very happy with a 40RWHP(30RWHP on a mustang) gain on a stage 2 setup, with a very aggressive tune. That might even be fantasy too though...

But hey, in due time we will see which one of us is right, so there's no point on arguing about theory right now. I dynoed baseline at 256whp. If I get an exhaust, intake an a tune and I come back with 346WHP, then I will gladly take back everything I said. Until then, I'm going to get my feet back on the ground and hope for 290-300whp.

KingDavid

Lol, As they come I will. But there's no stage anything. It's a re-TUNED reflash. The maps from COBB aren't on there. But again, ask the guy and the tuner himself. If the proof is there and you question it, ask questions. Don't be so quick to be so skeptical. Just ask. All of those dynos in that other thread are all pre-mapped and untuned. All of them. But if more pop up then so be it. If not, oh well. But it's intake HEADERS and exhaust and a TUNED reflash. So get it and tell us the results. If it's wong, then hey it's wrong, but if it's not then hey, learned something new.

Are you aware at all of the difference between a pre-mapped car vs a custom tuned one? At all? A walk on the other side of the world but K-series motors make a considerable amount power from a pre-mapped K-Pro vs. A tuned K-Pro.

And since you're questioning the integrity (or validity) of respected members info on that site, I'll see if I can drag them over here for you. Maybe even get a video of a dyno run? We'll see.

RCZ

1) The headers are part of the exhaust, hence the term exhaust covers it all.

2)Stage 2 on cars isn't a name given by tuners to a map or kit, stage 2 is widely understood to mean intakes, exhaust and a tune.

3) I don't need to ask anything, I know the bs answers already. Not to mention that if the guy is clueless enough to post a 90RWHP gain with those mods, then chances are he doesn't know his *** from his head about tuning.

4) You are asking me if I know the difference between a shelf tune and a tune? give me a break. I had over 40 hours of dyno tune time logged on my 04 STI alone. Also you call this a "re-TUNED reflash" do you even know what that means? I've had dinner with Trey Cobb, nice guy.

5) I don't give two flying bleeps who that guy is or how respected he is.

6) A video of the run lol, what is that going to do? I can have my tuner adjust the dyno and then video tape a run on it and make 400RWHP on my untuned intakes; what does that prove? I will believe it when I see an independent dyno with a stock VQ37 doing a pull and setting a base line and then he can do a pull right after. I want to see that 90WHP gain. I can't see the graph, what's the AFR on it? Race fuel? not that it matters..

7) Don't bother, we don't need that kind of nonsense here.


Listen, you are telling me this guy threw on an intake, an exhaust and a "re-TUNED reflash" and gained..lets see...a 35% gain of power over stock? Don't you at all think there is something wrong with that? Like at all??? You are in for a rough brush with reality...

Nismo 370z

+200. Agreed with everything you said. King David..it doesnt matter how many times u post that link. Thats only one dyno of a 370 making 350whp. Now like i said before, if i see more independent dyno runs then ill be a believer. Till then im taking that graph with a grain of salt. If u really knew anything about tuning, u would know there is no way u can squeeze 90whp from any VQ with just and intake/full exhaust/and a tune regardless of how good the tune is. Thats why i said in my previous post i would expect around 300-330whp from a dynojet with a setup like that depending on variables.

Also RCZ i do agree with u that on a car like this ignition mods are useless but a underdrive crank pulley actually helps. I picked up about 7whp from my 350 with it so it does add up.

MightyBobo

Just giving you a little dose of reality. I'm sorry you're getting so hurt over them. If you think I wont call you out in person, go ahead and try it. Ive heard BS responses to power claims, 1/4th times, and mods done plenty of times. Ive called them out everytime. But I prefer to do it in an intelligent way, rather than simply call the person a moron or a liar to their face.

Sorry, but I HAD a car that put down these numbers, and more, on a Mustang Dyno. I know what it takes to reach these power levels. I/H/E + tune wont do it. I'm sorry, but this is real life. Go out and do it yourself if you think you can actually do it.

The other mods will result in a leaned AF-ratio - but, hey, he got it tuned - so wheres the problem? Once again, I ask, are the injectors THAT strained? As far as not understanding RWHP versus Crank, who cares about crank HP? I was talking WHP the whole time.

You go right ahead and read "reported" dyno gains and assume everything just keeps adding up so simply, that you're going to pick up 70HP at the crank with basic mods. Sure, 400 crank translates to 340-350 WHP...on a Dynojet dyno, maybe. NOT a Mustang Dyno.

You know what, I dont even know why I mention all this stuff in here - why do we even say anything RCZ? Lets let the bench-racers get their mods, spend the cash, and just be disappointed. Let them go to the dyno, get a tune, and come back with their heads hanging low wondering, "why oh why, did I not get 350 WHP on a Mustang dyno? THE PEOPLE ON THE MESSAGE BOARD SAID THEY DID IT! IT MUST BE TRUE!"

shumby

cute kitten time

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

MightyBobo

Bravo, it was about time for a cute kitten wasn't it?

RCZ

dont think we needed to pull out the kittens just yet haha.

Good to know about the underdrive pulley, thanks for the info.

Nismo 370z

Anytime man. I dunno if there is a difference betweeen an underdrive crank pulley and a light weight one like the one stillen offers. Maybe one and the same thing .