Sam, is your fuel over there (93 octane) really good, meaning no additives like they do in the US (that 10% sh*t stuff)?

I would think they would have the best gas there in Dubai... :tup: I mean the wells are right up the street arent they in Saudi?

Yeah but where are the refineries? All the crude in the world won't do you much good unless you have a refinery.

Touche'. :shakes head: Semtex just :owned: me. :facepalm:

:rofl2: Sorry bud, that wasn't my intent. I was just making an observation.

I know, just trying to be overly dramatic lol. :tup:

Back to the dyno in a few weeks with another install and STOCK INTAKES!

Almost done making the first set Tony?

Check the LTH thread in about two minutes my friend!!!

:excited:

I am late to this party, and I am on this list and intend on purchasing these asap. But a shop by me picks up power and torque in almost every single uprev tune they do... sometimes as much as 15hp...

On the graph it claims the tune made no power ... isn't that hard to believe.. so the increase in the dyno posted in LTH and tune... solid gain, but nothing earth shattering at all..

most times a tune will give you power across the entire band as well... kinda disappointing to me , but what do I know.. I'm still down for them and will post my before and after as well... I will have uprev tune done tomorrow and I plan on posting my before/after and impressions... I will than go back to same shop to install these headers and touch up my tune... I am sure time will show plenty more dynos but that kinda leaves me with a little more to desire with those gains being LTH and tune

:confused:
You are looking at peak numbers, look at the whole graph and then come back. You might see a rather large gap between the lines.

Yes of coarse I am looking at the whole graph. Wwhat I am saying is on that dyno sheet Tony says the tune picked up no gains... only cleaned up a/f

I find that extremely hard to believe as I have seen with my own eyes 5-6 dyno sheets after an uprev tune where there was power made through out the entire RPM band on a car that came in with full bolt ons and some just TP/Intake ... No, not as much as posted here, but in some circumstances 15hp was gained around the same RPM as this dyno with just a tune on a car with injen cai, berk tp, greddy exhaust...

It seems as if he is saying the tune gave ZERO hp and ZERO tq and I find that very hard to believe.

This is a thread about a COBB tune, which in essense is the same thing as uprev as it just allows you to tweak the a/f and timing.. the gains are really good, and yes I know others have seen no gains from tunes, Im just posting this as a reference, take it for what ever its worth to you..

http://www.the370z.com/tuning/15435-...ome-gains.html

Also I have had ZERO problems with my stillen intakes.. I did not do before and after so I can not comment on power made but IMO they helped and had no install issues.. The exhaust def did present some fitments issues to me, which were addressed by heating the mid pipe and raising it up, which is nonsense IMO, BUT IMO stillen does not put out terrible products but they are far from perfect.. I purchased my exhaust used otherwise I would most likely of went the FI route but I did the budget route on the exhaust to save some money for the LTH ...

Stillen products have shown to make gains on customers dynos and that is what convinced me to get their products for this car.. The Stillen headers however showed little to no gain and I was very happy to see FI coming out with these LTHs.

Not trying to start crap It just seems as if this thread is filled with optimism, I'm sorry for throwing a little of my pessimistic ways into this thread.

I hope that you are right about the tune. Personally I was more impressed with the outcome from the car we tested in December with no intakes and no tune. A number of factors could be why the tune did nothing. After it was all said and done we added 100 octane race fuel in and tried to bump the timing. The ECU still kicked it back and did an override.

I have no doubt the headers work and you will all love them! I want to get a litlle more in depth in the tune next time because I feel like there is room for improvement. I can tell you this though, I am throughly convinced that the aftermarket long tube CAI's hurt the torque and power throughout the entire curve. Regardless of what anyones says. At this point I have dynoed enough different 370's with the same outcome.

Thanks, Tony

so what you are saying tony is

keep stock airbox?

I believe you 100% , your customers satisfaction is outstanding, and your loyal fan base is really unmatched from anything I have seen on forums.

You seem to do research on a level that many other people/companies do not do, and I am not trying to dis-credit anything you are saying...

Its really going to take a few people who have money to burn to go the extra distance to have a 370z with full bolt-ons. Tune the car. Than Swap stock box back, tune the car again, than dyno again. And share the outcome with others.

And other people also need to follow the first person to do this , and once 2,3,4 people see similar results than people will start to believe it, whatever the conclusion ends up being.

I would not be all that surprised if it was true but its hard to discredit the dynos that show big gains on otherwise STOCK cars, but who knows once you open up the exhaust..

Id love for someone to go dyno happy once they get these LTHs... my one concern is though if you are tuned with a CAI, and you swap your stock box box and dyno , it really wont be right.. You would have to re-tune as tony has shown his A/F does stay pretty darn close to stock with just his exhaust mods. And the CAI def throws it off.. You would need a dyno, swap of intakes, re-tune, dyno.. Or a stock tuned car to do it, but with the ecu learning theory that may be discredited too.

Long live the CAI vs OEM air box debate!

Another question off topic...

Do you know if the car made any more power with 100 octane ?

I have experimented with some from a local gas station by my house and other than the sweet smell I couldn't tell if it helped the car or not...

The car had a half of tank of 91 crap California gas. Then we dumped in 5 gallons of 100! Now in theory the car should take the extra timing you throw at it and hence pick up torque and power. We only did two runs and saw no change. However, my customer drove back to Vegas that evening which is about 300 miles. He told me the following day, he noticed a huge difference once he put some much needed miles on the car.

Back to the air intake issue. As of right now I am starting to feel like this car in it's current N/A stock form may be at it's limit as far as how much air it can take in. There is something going on with these heads and cams and this VVEL thing. Obviously if you change the cams, and port the ever living piss out of the heads you will pick up across the board. But until that happens you can only do so much with the bolt ons.

If I owned a 370Z right now, I would do:

-K&N drops ins
-Possibly an underdrive pulley
-FI LTH's (Of course) :tiphat:
-FI CBE W/18" Resonators & CF mufflers (Of course) :tiphat:
-Sway Bars
-Eibach Pro Kit
-4:10 rear end gears
-UpRev tune

This is just me speaking hypothetically!

Thanks, Tony

Have you been sneaking a peek into my mod list Tony?

Yeah K&N drop ins until your intake is ready.


Is your intake ready yet?!?!?!?!?!??!?!?!?

Hey Tony with your LTH and a eibach pro kit, do you think the headers are going to be dragging every where like on older V8 cars? or are they tucked up in there pretty good??

Tony, we discovered that osiris couldnt control timing months ago and there are a few threads discussing it.

You guys should keep in mind that most if not all the power from those uprev tunes that made power, came from fuel management. What's been happening is that the folks who are already leaned out with bolt on mods are not making any extra power through the tune. On the other hand, the guys with fewer or no bolt ons experience a much bigger gain since you get to lean it out through the tune and make power that way.

You can't control the timing because the car has an automatic override linked to several temperature sensors. You could go nuts with it, but in the end it does whatever it wants to protect itself. It can be tricked physically, I've seen it done. It seems though that some companies haven't had this limitation and have been able to tune timing at will....

I made like 3hp from my uprev tune at a reputable shop who I'm sure would've done wonders with a stock car.

I'm starting to think we could pick up a good amount of power on a stock 370z just by tuning it. Probably almost as much as an intake and exhaust make.

That is a very astute hypothesis, my friend. And I'm thinking you're probably right.

Thank you for chiming in. It is nice to hear someone say they made little to no power with a tune after having bolt on mods. Your testimony makes me stay sane and stop scratching my head.

As far as the tune making power with no mods due to changing the mapping of the A/F, I do not think the gains will be all that spectacular. Also keep in mind that some people buy exhaust systems for sound and aesthetics without caring about performance. On the flip side some buy just for performance. What I am getting at is buying the exhaust is an experience far beyond (JUST) performance.

Thanks, Tony

Very true! Although I would never bolt anything to my car that didn't improve performance. The added "experience" is a big factor when buying an exhaust.

I agree I also would never bolt anything on that did not make power. I sure as hell would not do it if it lost power. However, I get customers now and again that do not care about the performance factor.

To each his own I guess...

Tony

A few teaser pics of the first header built for production...

http://i371.photobucket.com/albums/o...s/IMG_5693.jpg

http://i371.photobucket.com/albums/o...s/IMG_5691.jpg

FYI my car was tuned almost stock (just intakes) by the owner of Uprev and picked up 0 HP/TQ.

On another note those headers look awesome. Is there going to be an option for heat wrapping?

I believe he is offering ceramic coating.

I actually think that UpRev can tune more than AFR...considering Stillen is using UpRev for the tune of their supercharger, shouldnt that mean they have figured out a way to manage all the other stuff... unless the tune coming with the stillen supercharger is actually only tuning the AFR....

In previous discussions with him, Tony advised me against heat-wrapping these headers. Just an fyi.

Another reason why it's better to wait a year+ for other's to figure things out unless you are going for the sweet sound and don't mind spending the $$$.

fyi - I'm having my wife's car tuned this week with UpRev (same mods - FI CBE, 18"resonators, HFC's, CF Mufflers, Stillenn GenIII) - the tuner claims he can adjust timing - I will post for comparison to the SpecialtyZ tune that Tony provided. One map will be 100 octane - btw since there is pure race gas in the tank right now. :yum:

I mentioned this in the other FI LTH thread. Most of the 90's and back cars had the cats after the header/down pipe. That may not pass the cold start smog requirments now-a-days but having like a 200 cell cat after the long tubes I would think would cut down the raw fuel smell and get you by a quick visual. I know this would necessitate a revised mid-pipe but keep it mind for later Tony. It might keep cops and Highway Patrol from rolling you not to mention the possible smell at stop lights. Not sure how that would impact the #'s though.

Wow, it'd really screw up your plans if those of us who actually adopt and test new parts made a policy of only sharing our results with others who contribute to the community's body of knowledge, wouldn't it? It wouldn't be too hard to do either, seeing as how we can create private groups on this forum. (I'm just making an observation, btw. Pls don't take this remark as an implied threat or anything like that.)

can I has invite? :excited:

LOL. I will be making my review, dyno charts, etc., public like I normally do. I was just thinking out loud, in a manner of speaking.

ya I know :tup:

He did recommend Ceramic Coating though, even though at $280