You can have all the logs and dyno sheets ya want. Made it through college by sitting next to the smart kids so any answers you can throw my way is appreciated. Admittedly a bit bummed at the overall output compared to other similar modded cars and the lack of response from tuning attempts. Even been shopping Z06's and GT-R's trying to figure out what to do.

Spent 3.5 hours yesterday a Dynoject dyno with a bud whom tunes for a living seeing if there were any improvements in the Cobb tuning software and to reestablish a new baseline before adding 4.08 gears. Made quite a few little adjustments in mods adding an under drive pulley, opening up the grill/bumper so more air gets to the Gen 3 intake, oil cooler and wrapping the Gen 3 intake tubes for less heat soak and to lower intake temps, downloading the latest version of the Cobb tuning software into the ECU. The air temp was also 55 degrees which is a radical change from normal Dallas summer heat.

The car picked up 10 hp from the mods and appeared to respond to fuel/air tuning where it didn't prior. Fuel/Air tuning picked up 3-4 more hp with the car now at 330.3 and 262.2 std for an overall gain from baseline of 48.6 rwhp or 56.9 flywheel. Remember also, the car has had the kitchen sink thrown at it regarding mods with about every bolt-on available.

We tried to play with the timing and haven't had time to study the logs to see exactly what was going on but the car lost 2hp when we added 2 degrees timing and also lost 2 hp when we pulled 2 degrees out. The overall timing from the logs picked up two degrees on it's own but the car is still pulling out midrange timing which shows as a slight dip in the midrange curve. Going to fatten the car up a little more in the lower midrange to see if that is what it likes as cars are more prone to detonate around peak torque.

In getting a bit deeper into the software I'm am noticing some abnormalities such as the MAF voltage is different from left to right indicating uneven air distribution and obviously the phantom timing issues which are probably related to tables in the ECU.

What do ya need? It's all yours.

^ I'm going to tune my car (after i get the cobb softwear working on my PC)

Quick question. How are you tuning on the dyno? Full throttle runs? Or hold the load and tune each cell?

This is kind off going of topic .. why don't open a new topic in the tuning section.

PEACE ... :tup:

wtf with the 16ft/lb loss?

Denny, without having your car on the dyno with me, I would not be able tell you exactly what to change. NA tuning is very subtle, and although we follow general guidlines, each car is very unique. One 370Z may make best power at 12.9:1 AF, and another may prefer 12.3:1 AF. This is why the canned Cobb tunes probably don't yield too much power. It's a whole different story with a car like the GT-R, in which we can push a few keystrokes, and make 50-70whp just from tuning...no mods. That said, if you have any datalogs from the dyno pulls you made, please email them to me. sharif@forgedperformance.com

Here is one of the dynos from Ben's car. Although we never had the opportunity to baseline his car, all the other 370Z's and G37's we tested are very close to 250whp on our dyno. So in this case, we are seeing roughly 40whp improvement from just HFC's and exhaust...no tuning.

Your baseline on the DJ seems very close to what others are seeing on that particular brand of dyno (280-287whp).

http://onfinite.com/libraries/1467494/4f7.jpg

This is what we are installing. Gen3 intake, testpipes and Stillen exhaust. The dyno runs are numbered different due to the folders of the upgrades. The first pull listed is testpipe install there was no baseline pull. Second is with the car still on the dyno and install of testpipes and Gen3 intake. The last pull is with testpipes, Gen3 and Stillen exhaust installed.

At the moment we are waiting for Uprev to finalize the 370Z software for tuning. We're eagerly awaiting the call from Rich or Jarred to tell us it's finalized.

These are the best runs for each upgrade going all the way to the rev limit.

http://www.z1motorsports.com/imageGa...70Z10_9_09.jpg

Computer clitch.

[QUOTE=Sharif@Forged;230111]Denny, without having your car on the dyno with me, I would not be able tell you exactly what to change. NA tuning is very subtle, and although we follow general guidlines, each car is very unique. One 370Z may make best power at 12.9:1 AF, and another may prefer 12.3:1 AF. This is why the canned Cobb tunes probably don't yield too much power. It's a whole different story with a car like the GT-R, in which we can push a few keystrokes, and make 50-70whp just from tuning...no mods. That said, if you have any datalogs from the dyno pulls you made, please email them to me. sharif@forgedperformance.com

QUOTE]

More than glad to share anything I have and thank you for the offer. In my experience, have also found each car has an individual personality and no.... canned tunes can be very hit or miss.

Think quite a few people may have an unrealistic expectation on what to expect from a N/A tune as your very correct, it subtle and not mind blowing by any means.

Out of town at a meeting, but will e-mail you the logs w/dyno output as the timing really has me confused. Need all the imput I can get and very much appreciated.

Lots of stickers i.e. sticker-whore my car out via TRD, Mugen, Mazdaspeed, SVT, HKS, Greedy, "Type R" and the likes; big "fast & furious" wing; Pep Boys intake

...just kidding, I think the most imperative would be a high quality oil cooler.

I apologize if I sound harsh, but don't you think it's a quite waste of money if he never track his car?

CBE
Intake
HFC
Not is any specific order but those should be around 2000 +/-

It bothers me personally to see the needle go past 220. Different strokes for different folks. I know a lot say 260+ is danger mode, but in Los Angeles, REGULAR driving in 80 degree + weather can get ya there in a jiffy.

Never had any issues with it getting too hot in phoenix driving (non tracking).

I totally understand your point of view :tiphat:. But since he is in Wisconsin, I assumed oil cooler should not be his first priority if he plans on daily driving the Z.

I hit 260 on a test drive. It was 110+ out in the hellish AZ heat, but it was a little alarming. I was driving in a somewhat aggressive matter and it did lower immediately after I backed off..

Wonder if this was something with this paticular Z, as you've made it through the summer without any issues?