I contacted Dynotronics, an ecutek shop just south of Austin. They suggested a street tune as opposed to a Dyno tune. I get how a street tune can be more thorough for daily use. I'm waiting to hear back with more info. But has anyone opted for street over dyno?

 

4DRZ did. Go read his build thread.

 

IMO a car should be street tuned AND dyno tuned. The street tune will be more for drivability in the normal areas as a dyno does not load the car up as much as driving it on the street. The dyno tune should be used to dial in and fine tune the power adjustments at WOT (timing, cam adjustments, etc). It's more difficult to do those adjustments and quantify changes on the street unless doing something like timed runs at the strip.

Having either or could be just fine, but I think it's best to have both. You could street tune and get 90% and have the car driving great, but may need some more adjustments to get it's maximum potential. Likewise you could dyno tune and get great numbers WOT but the car could drive horrible just cruising around.

 

Thanks guys, I've been reading around and I PM'd 4drz as well. Still waiting to hear back from the shop too. When street tuning, do they hook up a wideband or is it all done from ECU readings?

And if I only did one for now, it's looking like an e-tune is the way to go. I don't want to invest too much in thinking considering I only have intakes and Berks. I most likely won't be adding anything else because I've read headers might not help too much and I do not want an exhaust, as I prefer the HFC/stock sound.

 

I street tuned mine with Seb at Ecutek. It was a pretty straight-forward process, and I have a highway entry that was perfect for doing my runs without any/minimal danger to myself or others. It took about a month when accounting for rain and such. The end results were quite amazing! I never dyno'ed it, so I can't tell you the gains. However, there were real gains.

 

Your old sedan, or your Nismo Z?

Why don't you write about this in more depth?

 

haha! Hey John!
Definitely the G! I'm not there yet with mods to tune Laura (Z)! What information would be helpful?

The process is a back-n-forth of receiving a map, flashing it, doing runs in 3rd gear to data log, and sending results back to the tuner. The beauty is that you will gradually see performance gains with each flash. The immediate gratification is the removal of the torque and rev limit placed on gears 1+2. You will break traction (my G was AWD) quite easily, but quite briefly in AWD trim. The tune changed the power band, making delivery more linear across the rev range. The car pulled effortlessly and I didn't feel the need to drop a gear at highway speeds when needing to pass or pull on someone.

I can only image the performance from a RWD coupe.

 

I've also had my car street tuned, both on Uprev and Ecutek. My current tune is on Ecutek through Seb at Speciality Z. I chose to go with a street tune because there are very limited AWD dyno options locally, and I wanted to go with a reputable tuner that knows the VQ platform.

There are certainly advantages to both a street/dyno tune, and like mentioned above the perfect tune would involve using both methods.

For both of my street tunes I needed to do pulls with the car while data logging using the selected tuning program, the information is converted into an excel file which you then send to your tuner, and based on that information they will send you revised tune files that you flash onto your car.

It is a pretty fun process, you get to drive it like you stole it. For my pulls I wanted it to be as accurate as possible, so i logged my entire fourth gear pull, which is 40km/h @1500 rpm, all the way to 200km/h @7500 rpm on a G37x. This takes a significant amount of time and you will need a lot of empty road. I had to drive about 30 mins out of town to find a proper spot to do this without anyone else around.

 

I street tuned my sedan using Ecutek through John Visconti on some secluded roads in Memphis. Pretty simple overall.

 

Done both Uprev street/dyno on the G37X. Before moving to CT, I had it done at Church's Auto in Southern California. Had to have all four dynopacks hooked up for the dyno tuning then later that week I went back for the street tuning to fine tune some things. I believe I dyno'd 291 to the wheels.

 

I plan to do the same process with Seb but is it difficult to log? I know I need a windows laptop (Non APPLE) but what is the process like of logging? Going WOT with bolt on mods, tinted front windows, and a laptop in the front seat being partially used by the driver in CALIFORNIA is not a pretty sight for an officer to see. overall, after my smog in a few weeks, I planned to get tuned.

Can anyone contribute the difference in speed when it comes to shifting in a 7At POST tune? I read it helps alot but some reassurance would be nice haha. Thanks guys

 

I etuned my Subaru Legacy GT. Finding somewhere to do a 3 gear 2k-redline pull was difficult. IDK that I'd trust someone else running my car like that

 

For those that have done an e-tune on their G37, how many revisions did it take? I've only ever done an e-tune once, on a FR-S. I think we did about 5 revisions total. This was a mostly stock car with a Speed by Design turbo kit.