Dyno Predictions for my upcoming mods?
 

Hey Z lovers!

I just ordered a bunch of bold on's, and will be doing an Uprev tune (at Z Shop Garage in San Jose Ca).

Anybody care to guess what my gains will be on my totally stock, manual, 09 sport? She currently has 27,500 miles or so, and previous owner was pretty easy on her as far as I can tell. So far she has only seen maintenance at the Nissan dealer in Santa Barbara where she used to live.

I will post my pre/post-mod dyno and test drive results as soon as the work is done!! As a bonus, I will also try to post pre/post exhaust note vids.

As exhaust note and throttle response/fun factor is too hard to quantify, I will be looking primarily at 3 measurable results:

a. whp
b. Tq
c. MPG at 65 mph (as read by trip computer reset at speed) (cruise controlled) on 10 mile stretch of hwy 880. (Currently 32.1) (about 2500rpm in 6th gear)

Here is the plan.

1. JWT Pop Charger. (intake)
2. Berk HFCs
3. Berk Cat Back Exhaust.
4. Uprev flash with Dyno tune at Z Car Garage.


*MY* (very uneducated) prediction is:
a. whp: 270 up to 303 (+33)(10% gain)
b. ft-lbs tq: 222 up to 223 perhaps? (+2)(10%gain)
c. MPG: 32 up to 35 (+3) (probably wishful thinking due to low rpm cruise.)

I used to drive (20 years ago) a '77 280z and loved it. By comparison this '09 370 is a spaceship. I have no idea what to expect from this tune but know it will be a fun journey and make the car feel like its "all mine"

Finally, (I know this is probably discussion for another thread but...) here are ALL my planned upgrades:

1. POP chargers (JWT)
2. HFC (berk)
3. CAT back exhaust (berk)
4. dyno tune (uprev)
5. sound dampening (Dynamat to be self installed)
6. Pulled steering lock CB (actually already done)
7. convex stick on side mirrors (also already done and sooooo much better)
7.5 (edit) locking nuts from dealer (also already installed...those 19' wheels are pretty sweet)
8. (most important of all!!!) 370z.com window sticker.

This is my DD. If anybody else has suggestions for MUST DO mods (like the steering lock and sound dampening) please chime in. I'm all ears and somewhat new to the forum.

Cheers.

oops forgot pictures
 

here are a few shots of my totally stock car the day i picked it up.
Nissan 370Z Forum - SurfDog's Album: Surfdog 09 370z sport

It sounds like you did your homework and should not be displeased with your numbers. You are well on your way to making more ZIP from your Z!

Hey man great plan and you did your HW. Stock your going be 265ish whp and 220 WTRQ. Mods and tune will get you 290-306 WHP and 260 ish WTRQ. with you biggest bolt on gain being the HFVCs. I made 298 WHP AN 240 WTRQ with no HTC's but with stillen gen 3'S. I thunk if had the gen 3'S you'd be over. 310. Just my .02 :)

so let me get this straight
 

You're going to spend $5,000 to $7,000 to check your,
WHP
TQ
MPG

Got it......

Good choice in finding rob at z car garage. He and his crew are awesome
your guesses are spot on with my dynos from z car garage

Lol it is not going to cost 5000 to 7000!!. More like 3000 I started this thread as part of my excitement about heo bolt ons. I really don't care too much about the actual numerical gains more about the percentage of increase in performance (i wonder if it will be noticeable) and about the change in the driving experience.

Stay tuned... So to speak... For my results. I'm very exited.

Rob is an interesting and passionate guy. Its clearly going to be a lot of fun working with him. I've seen a Ton of positive feedback here and on yelp about his shop and it is nice to be working with a guy who seems as exited about the project as I am. I wish I knew him back when I was driving my '77 280z. (of course he was probably about 10 years old back then)

Might as well ask for the fan control mod.

You're gonna get +30 to 40 over stock after tune.

+1 for this I did this over the weekend and saw no oil temps over 180:), Tranny temps where un 165 also.

I will definitely ask for the fan mod! thanks for the input!!!

Also, I think I will (read from other threads) be able to set 5 maps????
something like:

1.stock (for dealer trips?)
2.tuned (for DD)
3.valet (just because that seems cool)
4.econ (I have no idea what this would do, but it sounds helpful on a road-trip)
5.Anti theft (my Z sits outside in a parking lot overnight quite often)

I wonder how "econ" would work and if it actually does anything more then put training wheels on my throttle curves. Perhaps it should be called "wife or buddy is driving my car today mode, or clutch saver mode.

Update!!
My parts are still on back order. (actually just the cat back) in the mean time I've been talking with my mech, and have decided to put in a JWT clutch and light weight flywheel. I don't know if this will effect power change, but I think will enhance drivability and throttle/acceleration.

Hope you dealer is smarter than mine is and got you the right locking lugnuts.
Here's the thread showing the difference.
Wrong Application

actually i went to auto zone and got the wrong ones! i asked my tuner and he immediately pulled them off then it took me two weeks to find the right ones (I just ended ordering them from the dealer, and yes i showed him the CORRECT part number)

Thanks for warning me of the difference though, its an EASY mistake to make!

At long last my exhaust is in the shop. I will be putting my JWT clutch. Berk HFC and full cat back, dual pop chargers and my tune on over the next three days or so. I am TOTALLY amped. Photos and dynos to follow!!!

+1 for flywheel. :icon18:

On a dynojet, that sounds about right, give or take ~5. Also, will depend on your correction factor. FWIW, I recommend SAE for N/A cars, STD (or uncorrected) for boosted vehicles.

video from before mods:
Before Berk - YouTube

video from after mods:
After Berk - YouTube

I love the new Sound!!

:tup: a whole nother animal!
How did the final numbers look?

+1 for Z Car Garage
Sounds great

I'll have the dynos tomorrow.

:iagree: seeing Rob in a couple of weeks :tup:

dynojet came in at 315 horses! I know that doesn't mean much without the base (rob told me my premod numbers, but I don't remember for sure I think it was about 280. I'll post the dyno as soon as Rob E-mails it to me. (he did say I have a comparatively strong running motor)

Here are my subjective impressions:

JWT Clutch and light Flywheel:
The pedal is completely transformed! The instal was complicated by having to replace the Master Cylinder, but otherwise I guess this is my favorite bit of the upgrades for drive-ability. The Stock clutch WAS a bit of a bitch to drive. This is the clutch Nissan SHOULD have used IMHO. I have heard ppl complain that there is some rattle or vibrations with a lighter flywheel. I detect none. Clutch throw is shorter, and more user friendly and gone is the "ON/OFF switch" clutch feel that I (like so many others) found irritating. The engine seems to respond in a more positive way when easing in the clutch with the lighter flywheel. It is hard to explain without driving it for yourself, but let me just say WOW. Way better.

JWT POPchargers, Berk HFC's, and Exhaust:
This is hard to quantify, but just look at the youtube vids I put up to hear the sound difference. This Z sounds pretty darned amazing now. Its hard to keep my foot out of the pedal just to hear her sing. The sound in cockpit it awesome and keeps you coming back for more. Also I picked up some significant power and efficiency. How much is from the tune and how much is from the bolt-on's I have no idea. The pipes are very pretty, but don't allow much ground clearance in back. I wonder if the stockers are the same way and I just did not notice. Either way I don't think ill be going 4 wheeling anytime soon so this is not really a concern.

Uprev:
Better throttle response no question. 4 maps. (Tuned, Stock, valet, kill/no start). Nothing new to report here except it *needs* to be done after full breathing bolt-on's so you don't run dangerously lean.

Overall, I'm very happy with the new sound and feel of the Z. It really is a different animal now with the biggest noticeable improvements being the clutch feel and exhaust note. The power gains and throttle response are better too of course, but once off the dyno, they do not appreciably change my driving experience. I don't hammer the car around a track and try NOT to drag race all over the hood, so your driving impressions may differ.

If I had a limited budget and had to chose, I think I would do the JWT Clutch first. Then HFCs, I am unsure how much benefit came from PopChargers and Catback. I understand stock in-takes and Cat back are pretty good.

I apologize for not having my Dyno up, but I'll post it ASAP.

nice numbers! Thanks for posting your review.

My memory of the numbers was a bit off, but here is the dyno! (293 up to 318 pretty good.)
Drum-roll please...

http://www.the370z.com/members/surfd...-370zdyno.html

Clearly I need help posting a photo I'll keep trying...

Email it to me, I'll post it.

Also, do you have access to the drf's -- the actual datafiles? I have a a database of them -- if you wouldn't mind sharing them, please send to jlitman@mail.usf.edu

:tiphat:

Oh, what were the numbers with SAE correction?

I'll ask my tuner to send files and SAE correction until then, here is the dyno jpeg.

Awesome! Thanks, man! I can make any comparison graphs you want in return :tiphat:

Here's the dyno, in thread

http://www.the370z.com/members/jordo...-370zdyno.jpeg

Thanks!

You know my mods, I'd be interested to see how my gains stacked up against guys with similar upgrades. From what I gather I (well Rob really) made a pretty close to expected gain. In other words, success.

Good thread and good gains

Before I let this thread die, one last observation. A forum member who is clearly better with derivatives than I am had some observations about my gains.

I asked him to compare my Dyno result to others he has Obtained from other modders Here I what he has to say:

-quote-
Here's the closest comparison I can find. The other dynos are in 4th gear, but ambient conditions are similar and the only other difference is your lightweight flywheel and tune.

Long story short, % gains to peak values for the other Z were just over 5% to whp and < 1% to wtq; for you gains of 8% to peak whp and > 6% to peak torque. I think it's safe to assume that those differences (+3% whp; +5% wtq as compared to other Z) are indeed due to the tune and less rotating mass of the flywheel -- nice!
-end quote-

So the question is how much help came from tune, and how much from lighter flywheel. My guess is the much improved wtq it due to flywheel, whp and some small wtq gained from tune.

The world may never know!

I can make a somewhat educated guess -- an even 3% was due to tuning, and the rest was probably due to the flywheel. Assume another 1-2% is just plain old measurement error.

Would definitely like to see more dynos in both 4th and 5th gear from folks with lightened flywheels.

+1 rep to Jordo for your help and interest in my Dyno adventure!

I put down 332whp and 270wtq with Megan drift spec cat back exhaust with a custom H pipe, Invidia catlees test pipes,short ram intakes, stillen oil cooler, stage 2 clutch kit and up rev at churches automotive in so cal.

Pretty Sweet! You are probably making more hp than me but it is hard to tell on different DYNOS on different days (pressure altitude: a combination of tempeature and humidity)

If you are cranking out more hp it would probably be from the test pipes! I still have cats.

Also, I am using short intakes that suck warm air from under the hood. some guys have better luck from longer intakes that draw cooler air from behind the bumper. This probably does not affect the dynos though, because they are usually done with the hood open and a fan blowing cool air onto the intakes. so cool air source is not a factor.

good power though sounds like you have a strong motor!

Pretty Sweet! You are probably making more hp than me but it is hard to tell on different DYNOS on different days (pressure altitude: a combination of tempeature and humidity)

If you are cranking out more hp it would probably be from the test pipes! I still have cats.

Also, I am using short intakes that suck warm air from under the hood. some guys have better luck from longer intakes that draw cooler air from behind the bumper. This probably does not affect the dynos though, because they are usually done with the hood open and a fan blowing cool air onto the intakes. so cool air source is not a factor.

good power! Sounds like you have a strong motor!