Fast Intentions exhaust and header comparison. Before and after UPRev tune (Dyno)

XwChriswX

I know, just trying to be overly dramatic lol.

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Bonnie - Stage 2, Audio build coming this fall!
R.I.P. Abby 3/29/10 - 3/30/14

F.I. Inc.

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

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theDreamer

Almost done making the first set Tony?

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F.I. Inc.

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

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theDreamer

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chuckd05

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

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09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

theDreamer

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.

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chuckd05

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..

Cobb Tuned @ Altered Atmosphere – Awesome Gains!

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09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

chuckd05

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.

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09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

F.I. Inc.

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

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209Z

so what you are saying tony is

keep stock airbox?

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chuckd05

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!

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09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

chuckd05

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...

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09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

F.I. Inc.

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)
-FI CBE W/18" Resonators & CF mufflers (Of course)
-Sway Bars
-Eibach Pro Kit
-4:10 rear end gears
-UpRev tune

This is just me speaking hypothetically!

Thanks, Tony

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Zat_Zuma

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

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