Z1 shorty headers results

[PostalsQ]

So I'll start off with the initial Dyno.
1) 307 WHP untuned w/
Injen LT CAI
Z1 Motorsports lower intake manifold & plenum
Stillen UD pulley
Kenetix HFC's
Modified Motordyne Y-pipe into an X into a modified Stillen exhaust system (Single inlet was cut to be able to flow into 2 pipes)

2) 321 WHP untuned w/ 2nd Dyno
Added Z1 shorty headers attached to Z1 HFC's. So Kenetix cats removed


3) Lastly UPRev Dyno tuned
335WHP.

Sorry. He was going to email my Dyno sheet. Forgot TQ. I believe 269WTQ tuned.

[Ilya]

Nice.

[PostalsQ]

Thanks Ilya. The numbers exceeded my expectations. I anticipated 320. Even the tuner was pleasantly surprised. Can't think of any more bot ons except TB's. But that ended miserably.

[DKASM37]

Impressive results...

[PostalsQ]

https://imgur.com/gallery/qJ77N
My dyno sheets

[DFW2011M56S]

All I can say is good thing the M37s have 3.36 gears. You'll are down over 100 ft/lbs from a stock 5.6. For reference purposes my stock 5.6 put down 382/390 on a Dynojet that is known to he a bit stingy compared to others.

I am actually considering a Nitrous Express Nissan dual nozzle kit designed for a 350z HR or 370z and a 100 shot on my M56. My 2014 Titan ran a while on a 150 shot before I demoded it and traded it off. Nitrous is the cheapest best bang for the buck there is.

For the most part it was all tucked under the engine cover, the casual onlooker never noticed.

[PostalsQ]

Very familiar with nitrous. Ran a 2 stage of 300 HP on my 99 SS Camaro. V8's will always trump a V6 on TQ. But I'm pretty happy with my 3.7 overall. The MPG's are nearly at 30 in ECO on the freeway

[Ilya]

Very familiar with nitrous. Ran a 2 stage of 300 HP on my 99 SS Camaro. V8's will always trump a V6 on TQ. But I'm pretty happy with my 3.7 overall. The MPG's are nearly at 30 in ECO on the freeway

I average 16 right now

[PostalsQ]

16 overall? Or 16 on the freeway. And when I said nearly 30. I'm in the grandma lane at 60-65. Also I've tried paddle shifting in the city. I noticed my MPG's are better by about a couple. So it's interesting how you would believe the trans would shift for optimal MPG's. Not so in my experience.

[Ilya]

16 overall? Or 16 on the freeway. And when I said nearly 30. I'm in the grandma lane at 60-65. Also I've tried paddle shifting in the city. I noticed my MPG's are better by about a couple. So it's interesting how you would believe the trans would shift for optimal MPG's. Not so in my experience.

80% of my speeds are above 45, steady. Not 70-75 interstate, but still, it's not quite 'city'. I do hit a few lights here or there. I also don't granny drive it . With winter gas, if I babied it, I'd probably average around 18 or so. Even in the summer, with 100% highway, I can only get about 23-24...but I do 75-80. Could get that up to 25/26 I'm sure if I did 60-65.

MPG is probably the only benefit of the 3.7

[PostalsQ]

Ok. So not as bad as you initially portrayed. It's all in driving habits. Obviously you like to have fun spirited driving. I get it. I like to party on occasion.

[DFW2011M56S]

A few months ago when I went to visit my sister south of San Antonio on the way home I ran nearly an hour at 80-85 mph on the tollroad then hit I35 near Georgetown still running 70-75 mph with traffic. I averaged 28 mpg. It is 304 miles driveway to driveway and I made it in 4 hours and 15 minutes with one 10 minute stop. Average of 75 mph for the whole trip not including the stop. Around town the Q50 loaner I had when my car was in getting timing chains was averaging 15.9 mpg on a long highway trip I got 31 mpg. My heavier V8 was averaging 16.4 in town and still gets 24+ mpg running 85-100. I think our traffic flow and my foot is more conducive to getting decent mileage out of the torquey V8 the V6 stays in the lower gears too much and works itself to death to move the car like I like. I drove the Q50 eberywhere in sport mode just to get V8 like response at part throttle.

I actually took these because I doubted anyone would believe it. The first one was nearly 2 hours into the trip after having been running 80-85 mph for a solid hour. The second was after getting back on the road and running another hour at 70-75 mph. Over an hour apart, more than 70 miles later. DTE was rising past the mileage traveled most of the trip. On that trip the full tank wpuld have taken me over 500 miles.

[DFW2011M56S]

16 overall? Or 16 on the freeway. And when I said nearly 30. I'm in the grandma lane at 60-65. Also I've tried paddle shifting in the city. I noticed my MPG's are better by about a couple. So it's interesting how you would believe the trans would shift for optimal MPG's. Not so in my experience.

I paddle shift or run in sport mode for MPg around town. The 7spd upshifts too quickly at light throttle and locks the torque converter at a low speed. Even trying to accelerate lightly in the 1,200-1,500 rpm range my instant MPG is at 10. If I use more RPM and less throttle it will stay at 15+ on the same acceleration. I do not even go to 6th gear until 60 or 7th until about 75 mph. I have run 70 mph turning 3K rpm and still show 25+ mpg on the instant display. The V8 cars are undergeared for optimal mpg in my opinion. Nissan has a habit of doing this though. My 3.36 geared Titan did better on fuel than my coworkers 2.94 geared truck and much better than the 2.94 geared 4x4 Armada that belonged to my brothers boss. I had a few trips I averaged 18-20 mpg in my 2012 2wd Titan and that was running 75+ mph. Engine load plays a huge part in fuel economy. Its a delicate balancing act. In my experience too much load will negatively impact fuel economy far worse than higher rpm will.

[PostalsQ]

Well, I'm really digging my tuning. Drove approximately 100 miles round trip today and was averaging 26-27 the entire time. And my speeds were 80-85 most times till I saw CHP and slowed to 60. Another thing I noticed is during start up. Prior to tuning I noticed she was running rich. Now no rich smell now. Driving her, just really gives me a huge smile.

DFW, your M56 is really impressive with MPG's. I'm going to assume ur tuned

[Ilya]

DFW also lives in TX (IIRC, or if I'm assuming DFW stands for Dallas-Forth Worth)...which, correct me if I'm wrong, is pretty flat? Upstate NY (Adirondack Mountains, Hudson Valley, etc.) is anything BUT flat. It'll definitely affect MPGs.

[DFW2011M56S]

DFW also lives in TX (IIRC, or if I'm assuming DFW stands for Dallas-Forth Worth)...which, correct me if I'm wrong, is pretty flat? Upstate NY (Adirondack Mountains, Hudson Valley, etc.) is anything BUT flat. It'll definitely affect MPGs.

You would be correct. I am between Dallas and Fort Worth in Euless. You would think that it is very flat but not so much, alot of our roads even higways are hilly and around town much of it is overpassed. Traffic is either at a full stop or 80 mph on my way to work and alternates between the two. I get alot of idle time in my daily commute either stopped in bumper to bumper traffic or at traffic lights. On my roadtrip going through the Austin area is alot of rolling hills. I think on the open road my driving style helps my MPG as well. I have driven alot of underpowered things and towed trailers most of my life. I tend to build speed before I hit a hill and let momentum carry me up the hill, bleeding some speed so I keep from downshifting as much as possible.

[DFW2011M56S]

Well, I'm really digging my tuning. Drove approximately 100 miles round trip today and was averaging 26-27 the entire time. And my speeds were 80-85 most times till I saw CHP and slowed to 60. Another thing I noticed is during start up. Prior to tuning I noticed she was running rich. Now no rich smell now. Driving her, just really gives me a huge smile.

DFW, your M56 is really impressive with MPG's. I'm going to assume ur tuned

I am tuned and have intake/exhaust mods. On the tollway I was running open cutouts for the hell of it. Middle of nowhere, hauling butt with open cutouts was fun. When I started getting into a more populated area and more traffic I closed them so I did not draw as much attention to myself. I actually tuned my fuel compensation tables realtime on the road sitting in the passenger seat. I will also mention the fuel I filled up with on that trip was also straight gasoline, ethanol free. Wish we had a place to get it here. My car loves the non-ethanol rather than the 10% BS. E10 is horrible compared to straight gasoline as it has no helpful properties compared to E85 which is higher octane and has a better cooling effect.

[walt1227]

Well, I'm really digging my tuning. Drove approximately 100 miles round trip today and was averaging 26-27 the entire time. And my speeds were 80-85 most times till I saw CHP and slowed to 60. Another thing I noticed is during start up. Prior to tuning I noticed she was running rich. Now no rich smell now. Driving her, just really gives me a huge smile.

DFW, your M56 is really impressive with MPG's. I'm going to assume ur tuned

I am tuned and have intake/exhaust mods. On the tollway I was running open cutouts for the hell of it. Middle of nowhere, hauling butt with open cutouts was fun. When I started getting into a more populated area and more traffic I closed them so I did not draw as much attention to myself. I actually tuned my fuel compensation tables realtime on the road sitting in the passenger seat. I will also mention the fuel I filled up with on that trip was also straight gasoline, ethanol free. Wish we had a place to get it here. My car loves the non-ethanol rather than the 10% BS. E10 is horrible compared to straight gasoline as it has no helpful properties compared to E85 which is higher octane and has a better cooling effect.

Can we get some video of your exhaust sound? I get the same MPG as you driving 80-85 MPH at 26-27 MPG. My wife has had the M56 at 28-30 MPG before doing 70-75 MPH. I sometimes let her drive on our trips because she does a better job at throttle response or control. Anytime I get at a stoplight I just WOT just cause I can especially when I am first in line lol. Also my car is not tuned at all just has a modded intake.

[Viper33]

Sorry I’m a bit late on this but can you please confirm fitment of the Z1 headers on the M37?

Z1 couldn’t confirm this for me. Their responses have been all of the following:
1. “should be fine but we’ve never had an M37 in”
2. “The headers will not fit”
3. “I don’t think it will fit - it’s a tight fit on the drivers side.”

Would love to get this and the Z1 HFCs into my 2011 M37. Just need confirmation that they can fit.

Thanks!

So I'll start off with the initial Dyno.
1) 307 WHP untuned w/
Injen LT CAI
Z1 Motorsports lower intake manifold & plenum
Stillen UD pulley
Kenetix HFC's
Modified Motordyne Y-pipe into an X into a modified Stillen exhaust system (Single inlet was cut to be able to flow into 2 pipes)

2) 321 WHP untuned w/ 2nd Dyno
Added Z1 shorty headers attached to Z1 HFC's. So Kenetix cats removed


3) Lastly UPRev Dyno tuned
335WHP.

Sorry. He was going to email my Dyno sheet. Forgot TQ. I believe 269WTQ tuned.

[Malbec 56 Beast]

When I take my car to work it's a 90mi round trip.

I'm running about 75-80 continuously and am averaging in the very high 20's per gallon, about 27-28 is the average norm. My car is completely factory stock.

I had a G37xS and got about the same or lower than with my M, I'm maybe about the same.

But with 100 more hp and tq I'll take it.

Andy